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Readability: spaces after commas
This commit is contained in:
Robert Smallshire
@@ -60,16 +60,16 @@ l_float = struct.calcsize('f')
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##############
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# Initialize SEGY HEADER
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SH_def = {"Job": {"pos": 3200,"type":"int32","def":0}}
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SH_def["Line"]= {"pos": 3204,"type":"int32","def":0}
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SH_def["Reel"]= {"pos": 3208,"type":"int32","def":0}
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SH_def["DataTracePerEnsemble"]= {"pos": 3212,"type":"int16","def":0}
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SH_def["AuxiliaryTracePerEnsemble"]={"pos": 3214,"type":"int16","def":0}
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SH_def["dt"]= {"pos": 3216,"type":"uint16","def":1000}
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SH_def["dtOrig"]= {"pos": 3218,"type":"uint16","def":1000}
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SH_def["ns"]={"pos": 3220,"type":"uint16","def":0}
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SH_def["nsOrig"]={"pos": 3222,"type":"uint16","def":0}
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SH_def["DataSampleFormat"]={"pos": 3224,"type":"int16","def":5}
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SH_def = {"Job": {"pos": 3200, "type":"int32", "def":0}}
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SH_def["Line"]= {"pos": 3204, "type":"int32", "def":0}
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SH_def["Reel"]= {"pos": 3208, "type":"int32", "def":0}
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SH_def["DataTracePerEnsemble"]= {"pos": 3212, "type":"int16", "def":0}
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SH_def["AuxiliaryTracePerEnsemble"]={"pos": 3214, "type":"int16", "def":0}
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SH_def["dt"]= {"pos": 3216, "type":"uint16", "def":1000}
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SH_def["dtOrig"]= {"pos": 3218, "type":"uint16", "def":1000}
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SH_def["ns"]={"pos": 3220, "type":"uint16", "def":0}
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SH_def["nsOrig"]={"pos": 3222, "type":"uint16", "def":0}
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SH_def["DataSampleFormat"]={"pos": 3224, "type":"int16", "def":5}
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SH_def["DataSampleFormat"]["descr"]={0:{
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1: "IBM Float",
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2: "32 bit Integer",
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@@ -107,38 +107,38 @@ SH_def["DataSampleFormat"]["datatype"][1]={
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5: 'f',
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8: 'B'}
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SH_def["EnsembleFold"]={"pos": 3226,"type":"int16","def":0}
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SH_def["TraceSorting"]={"pos": 3228,"type":"int16","def":0}
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SH_def["VerticalSumCode"]={"pos": 3230,"type":"int16","def":0}
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SH_def["SweepFrequencyEnd"]={"pos": 3234,"type":"int16","def":0}
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SH_def["SweepLength"]={"pos": 3236,"type":"int16","def":0}
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SH_def["SweepType"]={"pos": 3238,"type":"int16","def":0}
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SH_def["SweepChannel"]={"pos": 3240,"type":"int16","def":0}
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SH_def["SweepTaperLengthStart"]={"pos": 3242,"type":"int16","def":0}
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SH_def["SweepTaperLengthEnd"]={"pos": 3244,"type":"int16","def":0}
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SH_def["TaperType"]={"pos": 3246,"type":"int16","def":0}
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SH_def["CorrelatedDataTraces"]={"pos": 3248,"type":"int16","def":0}
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SH_def["BinaryGain"]={"pos": 3250,"type":"int16","def":0}
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SH_def["AmplitudeRecoveryMethod"]={"pos": 3252,"type":"int16","def":0}
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SH_def["MeasurementSystem"]={"pos": 3254,"type":"int16","def":0}
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SH_def["ImpulseSignalPolarity"]={"pos": 3256,"type":"int16","def":0}
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SH_def["VibratoryPolarityCode"]={"pos": 3258,"type":"int16","def":0}
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SH_def["Unassigned1"]={"pos": 3260,"type":"int16", "n":120,"def":0}
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SH_def["SegyFormatRevisionNumber"]={"pos": 3500,"type":"uint16","def":100}
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SH_def["FixedLengthTraceFlag"]={"pos": 3502,"type":"uint16","def":0}
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SH_def["NumberOfExtTextualHeaders"]={"pos": 3504,"type":"uint16","def":0}
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SH_def["Unassigned2"]={"pos": 3506,"type":"int16", "n":47,"def":0}
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SH_def["EnsembleFold"]={"pos": 3226, "type":"int16", "def":0}
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SH_def["TraceSorting"]={"pos": 3228, "type":"int16", "def":0}
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SH_def["VerticalSumCode"]={"pos": 3230, "type":"int16", "def":0}
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SH_def["SweepFrequencyEnd"]={"pos": 3234, "type":"int16", "def":0}
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SH_def["SweepLength"]={"pos": 3236, "type":"int16", "def":0}
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SH_def["SweepType"]={"pos": 3238, "type":"int16", "def":0}
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SH_def["SweepChannel"]={"pos": 3240, "type":"int16", "def":0}
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SH_def["SweepTaperLengthStart"]={"pos": 3242, "type":"int16", "def":0}
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SH_def["SweepTaperLengthEnd"]={"pos": 3244, "type":"int16", "def":0}
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SH_def["TaperType"]={"pos": 3246, "type":"int16", "def":0}
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SH_def["CorrelatedDataTraces"]={"pos": 3248, "type":"int16", "def":0}
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SH_def["BinaryGain"]={"pos": 3250, "type":"int16", "def":0}
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SH_def["AmplitudeRecoveryMethod"]={"pos": 3252, "type":"int16", "def":0}
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SH_def["MeasurementSystem"]={"pos": 3254, "type":"int16", "def":0}
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SH_def["ImpulseSignalPolarity"]={"pos": 3256, "type":"int16", "def":0}
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SH_def["VibratoryPolarityCode"]={"pos": 3258, "type":"int16", "def":0}
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SH_def["Unassigned1"]={"pos": 3260, "type":"int16", "n":120, "def":0}
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SH_def["SegyFormatRevisionNumber"]={"pos": 3500, "type":"uint16", "def":100}
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SH_def["FixedLengthTraceFlag"]={"pos": 3502, "type":"uint16", "def":0}
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SH_def["NumberOfExtTextualHeaders"]={"pos": 3504, "type":"uint16", "def":0}
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SH_def["Unassigned2"]={"pos": 3506, "type":"int16", "n":47, "def":0}
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##############
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# Initialize SEGY TRACE HEADER SPECIFICATION
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STH_def = {"TraceSequenceLine": {"pos": 0,"type":"int32"}}
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STH_def["TraceSequenceFile"]= {"pos": 4,"type":"int32"}
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STH_def = {"TraceSequenceLine": {"pos": 0, "type":"int32"}}
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STH_def["TraceSequenceFile"]= {"pos": 4, "type":"int32"}
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STH_def["FieldRecord"]= {"pos": 8, "type":"int32"}
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STH_def["TraceNumber"]= {"pos": 12,"type":"int32"}
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STH_def["EnergySourcePoint"]= {"pos": 16,"type":"int32"}
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STH_def["cdp"]= {"pos": 20,"type":"int32"}
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STH_def["cdpTrace"]= {"pos": 24,"type":"int32"}
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STH_def["TraceIdentificationCode"]={"pos":28 ,"type":"uint16"} #'int16'); % 28
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STH_def["TraceNumber"]= {"pos": 12, "type":"int32"}
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STH_def["EnergySourcePoint"]= {"pos": 16, "type":"int32"}
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STH_def["cdp"]= {"pos": 20, "type":"int32"}
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STH_def["cdpTrace"]= {"pos": 24, "type":"int32"}
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STH_def["TraceIdentificationCode"]={"pos":28 , "type":"uint16"} #'int16'); % 28
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STH_def["TraceIdentificationCode"]["descr"]={0:{
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1: "Seismic data",
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2: "Dead",
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@@ -173,28 +173,28 @@ STH_def["TraceIdentificationCode"]["descr"][1]={
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20: "Vibrator estimated ground force",
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21: "Vibrator reference",
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22: "Time-velocity pairs"}
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STH_def["NSummedTraces"]={"pos":30 ,"type":"int16"} #'int16'); % 30
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STH_def["NStackedTraces"]={"pos":32 ,"type":"int16"} #'int16'); % 32
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STH_def["DataUse"]={"pos":34 ,"type":"int16"} #'int16'); % 34
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STH_def["NSummedTraces"]={"pos":30 , "type":"int16"} #'int16'); % 30
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STH_def["NStackedTraces"]={"pos":32 , "type":"int16"} #'int16'); % 32
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STH_def["DataUse"]={"pos":34 , "type":"int16"} #'int16'); % 34
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STH_def["DataUse"]["descr"]={0: {
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1: "Production",
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2: "Test"}}
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STH_def["DataUse"]["descr"][1]=STH_def["DataUse"]["descr"][0]
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STH_def["offset"]={"pos":36 ,"type":"int32"} #'int32'); %36
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STH_def["ReceiverGroupElevation"]={"pos":40 ,"type":"int32"} #'int32'); %40
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STH_def["SourceSurfaceElevation"]={"pos":44 ,"type":"int32"} #'int32'); %44
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STH_def["SourceDepth"]={"pos":48 ,"type":"int32"} #'int32'); %48
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STH_def["ReceiverDatumElevation"]={"pos":52 ,"type":"int32"} #'int32'); %52
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STH_def["SourceDatumElevation"]={"pos":56 ,"type":"int32"} #'int32'); %56
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STH_def["SourceWaterDepth"]={"pos":60 ,"type":"int32"} #'int32'); %60
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STH_def["GroupWaterDepth"]={"pos":64 ,"type":"int32"} #'int32'); %64
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STH_def["ElevationScalar"]={"pos":68 ,"type":"int16"} #'int16'); %68
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STH_def["SourceGroupScalar"]={"pos":70 ,"type":"int16"} #'int16'); %70
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STH_def["SourceX"]={"pos":72 ,"type":"int32"} #'int32'); %72
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STH_def["SourceY"]={"pos":76 ,"type":"int32"} #'int32'); %76
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STH_def["GroupX"]={"pos":80 ,"type":"int32"} #'int32'); %80
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STH_def["GroupY"]={"pos":84 ,"type":"int32"} #'int32'); %84
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STH_def["CoordinateUnits"]={"pos":88 ,"type":"int16"} #'int16'); %88
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STH_def["offset"]={"pos":36 , "type":"int32"} #'int32'); %36
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STH_def["ReceiverGroupElevation"]={"pos":40 , "type":"int32"} #'int32'); %40
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STH_def["SourceSurfaceElevation"]={"pos":44 , "type":"int32"} #'int32'); %44
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STH_def["SourceDepth"]={"pos":48 , "type":"int32"} #'int32'); %48
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STH_def["ReceiverDatumElevation"]={"pos":52 , "type":"int32"} #'int32'); %52
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STH_def["SourceDatumElevation"]={"pos":56 , "type":"int32"} #'int32'); %56
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STH_def["SourceWaterDepth"]={"pos":60 , "type":"int32"} #'int32'); %60
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STH_def["GroupWaterDepth"]={"pos":64 , "type":"int32"} #'int32'); %64
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STH_def["ElevationScalar"]={"pos":68 , "type":"int16"} #'int16'); %68
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STH_def["SourceGroupScalar"]={"pos":70 , "type":"int16"} #'int16'); %70
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STH_def["SourceX"]={"pos":72 , "type":"int32"} #'int32'); %72
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STH_def["SourceY"]={"pos":76 , "type":"int32"} #'int32'); %76
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STH_def["GroupX"]={"pos":80 , "type":"int32"} #'int32'); %80
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STH_def["GroupY"]={"pos":84 , "type":"int32"} #'int32'); %84
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STH_def["CoordinateUnits"]={"pos":88 , "type":"int16"} #'int16'); %88
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STH_def["CoordinateUnits"]["descr"]={1: {
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1: "Length (meters or feet)",
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2: "Seconds of arc"}}
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@@ -203,38 +203,38 @@ STH_def["CoordinateUnits"]["descr"][1]={
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2: "Seconds of arc",
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3: "Decimal degrees",
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4: "Degrees, minutes, seconds (DMS)"}
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STH_def["WeatheringVelocity"]={"pos":90 ,"type":"int16"} #'int16'); %90
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STH_def["SubWeatheringVelocity"]={"pos":92 ,"type":"int16"} #'int16'); %92
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STH_def["SourceUpholeTime"]={"pos":94 ,"type":"int16"} #'int16'); %94
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STH_def["GroupUpholeTime"]={"pos":96 ,"type":"int16"} #'int16'); %96
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STH_def["SourceStaticCorrection"]={"pos":98 ,"type":"int16"} #'int16'); %98
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STH_def["GroupStaticCorrection"]={"pos":100 ,"type":"int16"} #'int16'); %100
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STH_def["TotalStaticApplied"]={"pos":102 ,"type":"int16"} #'int16'); %102
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STH_def["LagTimeA"]={"pos":104 ,"type":"int16"} #'int16'); %104
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STH_def["LagTimeB"]={"pos":106 ,"type":"int16"} #'int16'); %106
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STH_def["DelayRecordingTime"]={"pos":108 ,"type":"int16"} #'int16'); %108
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STH_def["MuteTimeStart"]={"pos":110 ,"type":"int16"} #'int16'); %110
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STH_def["MuteTimeEND"]={"pos":112 ,"type":"int16"} #'int16'); %112
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STH_def["ns"]={"pos":114 ,"type":"uint16"} #'uint16'); %114
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STH_def["dt"]={"pos":116 ,"type":"uint16"} #'uint16'); %116
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STH_def["GainType"]={"pos":119 ,"type":"int16"} #'int16'); %118
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STH_def["WeatheringVelocity"]={"pos":90 , "type":"int16"} #'int16'); %90
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STH_def["SubWeatheringVelocity"]={"pos":92 , "type":"int16"} #'int16'); %92
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STH_def["SourceUpholeTime"]={"pos":94 , "type":"int16"} #'int16'); %94
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STH_def["GroupUpholeTime"]={"pos":96 , "type":"int16"} #'int16'); %96
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STH_def["SourceStaticCorrection"]={"pos":98 , "type":"int16"} #'int16'); %98
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STH_def["GroupStaticCorrection"]={"pos":100 , "type":"int16"} #'int16'); %100
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STH_def["TotalStaticApplied"]={"pos":102 , "type":"int16"} #'int16'); %102
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STH_def["LagTimeA"]={"pos":104 , "type":"int16"} #'int16'); %104
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STH_def["LagTimeB"]={"pos":106 , "type":"int16"} #'int16'); %106
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STH_def["DelayRecordingTime"]={"pos":108 , "type":"int16"} #'int16'); %108
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STH_def["MuteTimeStart"]={"pos":110 , "type":"int16"} #'int16'); %110
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STH_def["MuteTimeEND"]={"pos":112 , "type":"int16"} #'int16'); %112
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STH_def["ns"]={"pos":114 , "type":"uint16"} #'uint16'); %114
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STH_def["dt"]={"pos":116 , "type":"uint16"} #'uint16'); %116
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STH_def["GainType"]={"pos":119 , "type":"int16"} #'int16'); %118
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STH_def["GainType"]["descr"]={0: {
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1: "Fixes",
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2: "Binary",
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3: "Floating point"}}
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STH_def["GainType"]["descr"][1]=STH_def["GainType"]["descr"][0]
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STH_def["InstrumentGainConstant"]={"pos":120 ,"type":"int16"} #'int16'); %120
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STH_def["InstrumentInitialGain"]={"pos":122 ,"type":"int16"} #'int16'); %%122
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STH_def["Correlated"]={"pos":124 ,"type":"int16"} #'int16'); %124
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STH_def["InstrumentGainConstant"]={"pos":120 , "type":"int16"} #'int16'); %120
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STH_def["InstrumentInitialGain"]={"pos":122 , "type":"int16"} #'int16'); %%122
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STH_def["Correlated"]={"pos":124 , "type":"int16"} #'int16'); %124
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STH_def["Correlated"]["descr"]={0: {
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1: "No",
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2: "Yes"}}
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STH_def["Correlated"]["descr"][1]=STH_def["Correlated"]["descr"][0]
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STH_def["SweepFrequencyStart"]={"pos":126 ,"type":"int16"} #'int16'); %126
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STH_def["SweepFrequencyEnd"]={"pos":128 ,"type":"int16"} #'int16'); %128
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STH_def["SweepLength"]={"pos":130 ,"type":"int16"} #'int16'); %130
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STH_def["SweepType"]={"pos":132 ,"type":"int16"} #'int16'); %132
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STH_def["SweepFrequencyStart"]={"pos":126 , "type":"int16"} #'int16'); %126
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STH_def["SweepFrequencyEnd"]={"pos":128 , "type":"int16"} #'int16'); %128
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STH_def["SweepLength"]={"pos":130 , "type":"int16"} #'int16'); %130
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STH_def["SweepType"]={"pos":132 , "type":"int16"} #'int16'); %132
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STH_def["SweepType"]["descr"]={0: {
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1: "linear",
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2: "parabolic",
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@@ -242,29 +242,29 @@ STH_def["SweepType"]["descr"]={0: {
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4: "other"}}
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STH_def["SweepType"]["descr"][1]=STH_def["SweepType"]["descr"][0]
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STH_def["SweepTraceTaperLengthStart"]={"pos":134 ,"type":"int16"} #'int16'); %134
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STH_def["SweepTraceTaperLengthEnd"]={"pos":136 ,"type":"int16"} #'int16'); %136
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STH_def["TaperType"]={"pos":138 ,"type":"int16"} #'int16'); %138
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STH_def["SweepTraceTaperLengthStart"]={"pos":134 , "type":"int16"} #'int16'); %134
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STH_def["SweepTraceTaperLengthEnd"]={"pos":136 , "type":"int16"} #'int16'); %136
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STH_def["TaperType"]={"pos":138 , "type":"int16"} #'int16'); %138
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STH_def["TaperType"]["descr"]={0: {
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1: "linear",
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2: "cos2c",
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3: "other"}}
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STH_def["TaperType"]["descr"][1]=STH_def["TaperType"]["descr"][0]
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STH_def["AliasFilterFrequency"]={"pos":140 ,"type":"int16"} #'int16'); %140
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STH_def["AliasFilterSlope"]={"pos":142 ,"type":"int16"} #'int16'); %142
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STH_def["NotchFilterFrequency"]={"pos":144 ,"type":"int16"} #'int16'); %144
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STH_def["NotchFilterSlope"]={"pos":146 ,"type":"int16"} #'int16'); %146
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STH_def["LowCutFrequency"]={"pos":148 ,"type":"int16"} #'int16'); %148
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STH_def["HighCutFrequency"]={"pos":150 ,"type":"int16"} #'int16'); %150
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STH_def["LowCutSlope"]={"pos":152 ,"type":"int16"} #'int16'); %152
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STH_def["HighCutSlope"]={"pos":154 ,"type":"int16"} #'int16'); %154
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STH_def["YearDataRecorded"]={"pos":156 ,"type":"int16"} #'int16'); %156
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STH_def["DayOfYear"]={"pos":158 ,"type":"int16"} #'int16'); %158
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STH_def["HourOfDay"]={"pos":160 ,"type":"int16"} #'int16'); %160
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STH_def["MinuteOfHour"]={"pos":162 ,"type":"int16"} #'int16'); %162
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STH_def["SecondOfMinute"]={"pos":164 ,"type":"int16"} #'int16'); %164
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STH_def["TimeBaseCode"]={"pos":166 ,"type":"int16"} #'int16'); %166
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STH_def["AliasFilterFrequency"]={"pos":140 , "type":"int16"} #'int16'); %140
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STH_def["AliasFilterSlope"]={"pos":142 , "type":"int16"} #'int16'); %142
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STH_def["NotchFilterFrequency"]={"pos":144 , "type":"int16"} #'int16'); %144
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STH_def["NotchFilterSlope"]={"pos":146 , "type":"int16"} #'int16'); %146
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STH_def["LowCutFrequency"]={"pos":148 , "type":"int16"} #'int16'); %148
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STH_def["HighCutFrequency"]={"pos":150 , "type":"int16"} #'int16'); %150
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STH_def["LowCutSlope"]={"pos":152 , "type":"int16"} #'int16'); %152
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STH_def["HighCutSlope"]={"pos":154 , "type":"int16"} #'int16'); %154
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STH_def["YearDataRecorded"]={"pos":156 , "type":"int16"} #'int16'); %156
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STH_def["DayOfYear"]={"pos":158 , "type":"int16"} #'int16'); %158
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STH_def["HourOfDay"]={"pos":160 , "type":"int16"} #'int16'); %160
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STH_def["MinuteOfHour"]={"pos":162 , "type":"int16"} #'int16'); %162
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STH_def["SecondOfMinute"]={"pos":164 , "type":"int16"} #'int16'); %164
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STH_def["TimeBaseCode"]={"pos":166 , "type":"int16"} #'int16'); %166
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STH_def["TimeBaseCode"]["descr"]={0: {
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1: "Local",
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2: "GMT",
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@@ -274,12 +274,12 @@ STH_def["TimeBaseCode"]["descr"][1]={
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2: "GMT",
|
||||
3: "Other",
|
||||
4: "UTC"}
|
||||
STH_def["TraceWeightingFactor"]={"pos":168 ,"type":"int16"} #'int16'); %170
|
||||
STH_def["GeophoneGroupNumberRoll1"]={"pos":170 ,"type":"int16"} #'int16'); %172
|
||||
STH_def["GeophoneGroupNumberFirstTraceOrigField"]={"pos":172 ,"type":"int16"} #'int16'); %174
|
||||
STH_def["GeophoneGroupNumberLastTraceOrigField"]={"pos":174 ,"type":"int16"} #'int16'); %176
|
||||
STH_def["GapSize"]={"pos":176 ,"type":"int16"} #'int16'); %178
|
||||
STH_def["OverTravel"]={"pos":178 ,"type":"int16"} #'int16'); %178
|
||||
STH_def["TraceWeightingFactor"]={"pos":168 , "type":"int16"} #'int16'); %170
|
||||
STH_def["GeophoneGroupNumberRoll1"]={"pos":170 , "type":"int16"} #'int16'); %172
|
||||
STH_def["GeophoneGroupNumberFirstTraceOrigField"]={"pos":172 , "type":"int16"} #'int16'); %174
|
||||
STH_def["GeophoneGroupNumberLastTraceOrigField"]={"pos":174 , "type":"int16"} #'int16'); %176
|
||||
STH_def["GapSize"]={"pos":176 , "type":"int16"} #'int16'); %178
|
||||
STH_def["OverTravel"]={"pos":178 , "type":"int16"} #'int16'); %178
|
||||
STH_def["OverTravel"]["descr"]={0: {
|
||||
1: "down (or behind)",
|
||||
2: "up (or ahead)",
|
||||
@@ -287,32 +287,32 @@ STH_def["OverTravel"]["descr"]={0: {
|
||||
STH_def["OverTravel"]["descr"][1]=STH_def["OverTravel"]["descr"][0]
|
||||
|
||||
|
||||
STH_def["cdpX"]={"pos":180 ,"type":"int32"} #'int32'); %180
|
||||
STH_def["cdpY"]={"pos":184 ,"type":"int32"} #'int32'); %184
|
||||
STH_def["Inline3D"]={"pos":188 ,"type":"int32"} #'int32'); %188
|
||||
STH_def["Crossline3D"]={"pos":192 ,"type":"int32"} #'int32'); %192
|
||||
STH_def["ShotPoint"]={"pos":192 ,"type":"int32"} #'int32'); %196
|
||||
STH_def["ShotPointScalar"]={"pos":200 ,"type":"int16"} #'int16'); %200
|
||||
STH_def["TraceValueMeasurementUnit"]={"pos":202 ,"type":"int16"} #'int16'); %202
|
||||
STH_def["cdpX"]={"pos":180 , "type":"int32"} #'int32'); %180
|
||||
STH_def["cdpY"]={"pos":184 , "type":"int32"} #'int32'); %184
|
||||
STH_def["Inline3D"]={"pos":188 , "type":"int32"} #'int32'); %188
|
||||
STH_def["Crossline3D"]={"pos":192 , "type":"int32"} #'int32'); %192
|
||||
STH_def["ShotPoint"]={"pos":192 , "type":"int32"} #'int32'); %196
|
||||
STH_def["ShotPointScalar"]={"pos":200 , "type":"int16"} #'int16'); %200
|
||||
STH_def["TraceValueMeasurementUnit"]={"pos":202 , "type":"int16"} #'int16'); %202
|
||||
STH_def["TraceValueMeasurementUnit"]["descr"] = {1: {
|
||||
-1: "Other",
|
||||
0: "Unknown (should be described in Data Sample Measurement Units Stanza) ",
|
||||
1: "Pascal (Pa)",
|
||||
2: "Volts (V)",
|
||||
3: "Millivolts (v)",
|
||||
4: "Amperes (A)",
|
||||
4: "Amperes (A)",
|
||||
5: "Meters (m)",
|
||||
6: "Meters Per Second (m/s)",
|
||||
7: "Meters Per Second squared (m/&s2)Other",
|
||||
8: "Newton (N)",
|
||||
9: "Watt (W)"}}
|
||||
STH_def["TransductionConstantMantissa"]={"pos":204 ,"type":"int32"} #'int32'); %204
|
||||
STH_def["TransductionConstantPower"]={"pos":208 ,"type":"int16"} #'int16'); %208
|
||||
STH_def["TransductionUnit"]={"pos":210 ,"type":"int16"} #'int16'); %210
|
||||
STH_def["TransductionConstantMantissa"]={"pos":204 , "type":"int32"} #'int32'); %204
|
||||
STH_def["TransductionConstantPower"]={"pos":208 , "type":"int16"} #'int16'); %208
|
||||
STH_def["TransductionUnit"]={"pos":210 , "type":"int16"} #'int16'); %210
|
||||
STH_def["TransductionUnit"]["descr"] = STH_def["TraceValueMeasurementUnit"]["descr"]
|
||||
STH_def["TraceIdentifier"]={"pos":212 ,"type":"int16"} #'int16'); %212
|
||||
STH_def["ScalarTraceHeader"]={"pos":214 ,"type":"int16"} #'int16'); %214
|
||||
STH_def["SourceType"]={"pos":216 ,"type":"int16"} #'int16'); %216
|
||||
STH_def["TraceIdentifier"]={"pos":212 , "type":"int16"} #'int16'); %212
|
||||
STH_def["ScalarTraceHeader"]={"pos":214 , "type":"int16"} #'int16'); %214
|
||||
STH_def["SourceType"]={"pos":216 , "type":"int16"} #'int16'); %216
|
||||
STH_def["SourceType"]["descr"] = {1: {
|
||||
-1: "Other (should be described in Source Type/Orientation stanza)",
|
||||
0: "Unknown",
|
||||
@@ -326,11 +326,11 @@ STH_def["SourceType"]["descr"] = {1: {
|
||||
8: "Distributed Impulsive - Cross-line orientation",
|
||||
9: "Distributed Impulsive - In-line orientation"}}
|
||||
|
||||
STH_def["SourceEnergyDirectionMantissa"]={"pos":218 ,"type":"int32"} #'int32'); %218
|
||||
STH_def["SourceEnergyDirectionExponent"]={"pos":222 ,"type":"int16"} #'int16'); %222
|
||||
STH_def["SourceMeasurementMantissa"]={"pos":224 ,"type":"int32"} #'int32'); %224
|
||||
STH_def["SourceMeasurementExponent"]={"pos":228 ,"type":"int16"} #'int16'); %228
|
||||
STH_def["SourceMeasurementUnit"]={"pos":230 ,"type":"int16"} #'int16'); %230
|
||||
STH_def["SourceEnergyDirectionMantissa"]={"pos":218 , "type":"int32"} #'int32'); %218
|
||||
STH_def["SourceEnergyDirectionExponent"]={"pos":222 , "type":"int16"} #'int16'); %222
|
||||
STH_def["SourceMeasurementMantissa"]={"pos":224 , "type":"int32"} #'int32'); %224
|
||||
STH_def["SourceMeasurementExponent"]={"pos":228 , "type":"int16"} #'int16'); %228
|
||||
STH_def["SourceMeasurementUnit"]={"pos":230 , "type":"int16"} #'int16'); %230
|
||||
STH_def["SourceMeasurementUnit"]["descr"] = {1: {
|
||||
-1: "Other (should be described in Source Measurement Unit stanza)",
|
||||
0: "Unknown",
|
||||
@@ -340,8 +340,8 @@ STH_def["SourceMeasurementUnit"]["descr"] = {1: {
|
||||
4: "Bar (Bar)",
|
||||
5: "Newton (N)",
|
||||
6: "Kilograms (kg)"}}
|
||||
STH_def["UnassignedInt1"]={"pos":232 ,"type":"int32"} #'int32'); %232
|
||||
STH_def["UnassignedInt2"]={"pos":236 ,"type":"int32"} #'int32'); %236
|
||||
STH_def["UnassignedInt1"]={"pos":232 , "type":"int32"} #'int32'); %232
|
||||
STH_def["UnassignedInt2"]={"pos":236 , "type":"int32"} #'int32'); %236
|
||||
|
||||
|
||||
##############
|
||||
@@ -358,36 +358,36 @@ def imageSegy(Data):
|
||||
pylab.grid(True)
|
||||
pylab.show()
|
||||
|
||||
def wiggle(Data,SH,skipt=1,maxval=8,lwidth=.1):
|
||||
def wiggle(Data, SH, skipt=1, maxval=8, lwidth=.1):
|
||||
"""
|
||||
wiggle(Data,SH)
|
||||
wiggle(Data, SH)
|
||||
"""
|
||||
import pylab
|
||||
|
||||
t = range(SH['ns'])
|
||||
|
||||
for i in range(0,SH['ntraces'],skipt):
|
||||
for i in range(0, SH['ntraces'], skipt):
|
||||
|
||||
trace=Data[:,i]
|
||||
trace=Data[:, i]
|
||||
trace[0]=0
|
||||
trace[SH['ns']-1]=0
|
||||
pylab.plot(i+trace/maxval,t,color='black',linewidth=lwidth)
|
||||
pylab.plot(i+trace/maxval, t, color='black', linewidth=lwidth)
|
||||
for a in range(len(trace)):
|
||||
if trace[a]<0:
|
||||
trace[a]=0;
|
||||
|
||||
pylab.fill(i+Data[:,i]/maxval,t,'k',linewidth=0)
|
||||
pylab.fill(i+Data[:, i]/maxval, t, 'k', linewidth=0)
|
||||
pylab.title(SH['filename'])
|
||||
pylab.grid(True)
|
||||
pylab.show()
|
||||
|
||||
|
||||
def getDefaultSegyHeader(ntraces=100,ns=100):
|
||||
def getDefaultSegyHeader(ntraces=100, ns=100):
|
||||
"""Remove unused import.
|
||||
SH=getDefaultSegyHeader()
|
||||
"""
|
||||
# INITIALIZE DICTIONARY
|
||||
SH = {"Job": {"pos": 3200,"type":"int32","def":0}}
|
||||
SH = {"Job": {"pos": 3200, "type":"int32", "def":0}}
|
||||
|
||||
for key in SH_def.keys():
|
||||
|
||||
@@ -405,12 +405,12 @@ def getDefaultSegyHeader(ntraces=100,ns=100):
|
||||
return SH
|
||||
|
||||
|
||||
def getDefaultSegyTraceHeaders(ntraces=100,ns=100,dt=1000):
|
||||
def getDefaultSegyTraceHeaders(ntraces=100, ns=100, dt=1000):
|
||||
"""
|
||||
SH=getDefaultSegyTraceHeader()
|
||||
"""
|
||||
# INITIALIZE DICTIONARY
|
||||
STH = {"TraceSequenceLine": {"pos": 0,"type":"int32"}}
|
||||
STH = {"TraceSequenceLine": {"pos": 0, "type":"int32"}}
|
||||
|
||||
for key in STH_def.keys():
|
||||
|
||||
@@ -427,15 +427,15 @@ def getDefaultSegyTraceHeaders(ntraces=100,ns=100,dt=1000):
|
||||
return STH
|
||||
|
||||
|
||||
def getSegyTraceHeader(SH,THN='cdp',data='none',endian='>'): # modified by A Squelch
|
||||
def getSegyTraceHeader(SH, THN='cdp', data='none', endian='>'): # modified by A Squelch
|
||||
"""
|
||||
getSegyTraceHeader(SH,TraceHeaderName)
|
||||
getSegyTraceHeader(SH, TraceHeaderName)
|
||||
"""
|
||||
|
||||
bps=getBytePerSample(SH)
|
||||
|
||||
if data=='none':
|
||||
data = open(SH["filename"],'rb').read()
|
||||
data = open(SH["filename"], 'rb').read()
|
||||
|
||||
|
||||
# MAKE SOME LOOKUP TABLE THAT HOLDS THE LOCATION OF HEADERS
|
||||
@@ -443,23 +443,23 @@ def getSegyTraceHeader(SH,THN='cdp',data='none',endian='>'): # modified by A Sq
|
||||
THformat=STH_def[THN]["type"]
|
||||
ntraces=SH["ntraces"]
|
||||
thv = zeros(ntraces)
|
||||
for itrace in range(1,ntraces+1,1):
|
||||
for itrace in range(1, ntraces+1, 1):
|
||||
|
||||
pos=THpos+3600+(SH["ns"]*bps+240)*(itrace-1);
|
||||
|
||||
txt="getSegyTraceHeader : Reading trace header " + THN + " " + str(itrace) + " of " + str(ntraces) + " " +str(pos)
|
||||
|
||||
printverbose(txt,20);
|
||||
thv[itrace-1],index = getValue(data,pos,THformat,endian,1)
|
||||
printverbose(txt, 20);
|
||||
thv[itrace-1], index = getValue(data, pos, THformat, endian, 1)
|
||||
txt="getSegyTraceHeader : " + THN + "=" + str(thv[itrace-1])
|
||||
printverbose(txt,30);
|
||||
printverbose(txt, 30);
|
||||
|
||||
return thv
|
||||
|
||||
|
||||
def getLastSegyTraceHeader(SH,THN='cdp',data='none',endian='>'): # added by A Squelch
|
||||
def getLastSegyTraceHeader(SH, THN='cdp', data='none', endian='>'): # added by A Squelch
|
||||
"""
|
||||
getLastSegyTraceHeader(SH,TraceHeaderName)
|
||||
getLastSegyTraceHeader(SH, TraceHeaderName)
|
||||
"""
|
||||
|
||||
bps=getBytePerSample(SH)
|
||||
@@ -477,72 +477,72 @@ def getLastSegyTraceHeader(SH,THN='cdp',data='none',endian='>'): # added by A S
|
||||
|
||||
txt="getLastSegyTraceHeader : Reading last trace header " + THN + " " + str(pos)
|
||||
|
||||
printverbose(txt,20);
|
||||
thv,index = getValue(data,pos,THformat,endian,1)
|
||||
printverbose(txt, 20);
|
||||
thv, index = getValue(data, pos, THformat, endian, 1)
|
||||
txt="getLastSegyTraceHeader : " + THN + "=" + str(thv)
|
||||
printverbose(txt,30);
|
||||
printverbose(txt, 30);
|
||||
|
||||
return thv
|
||||
|
||||
|
||||
def getAllSegyTraceHeaders(SH,data='none'):
|
||||
def getAllSegyTraceHeaders(SH, data='none'):
|
||||
SegyTraceHeaders = {'filename': SH["filename"]}
|
||||
|
||||
printverbose('getAllSegyTraceHeaders : trying to get all segy trace headers',2)
|
||||
printverbose('getAllSegyTraceHeaders : trying to get all segy trace headers', 2)
|
||||
|
||||
|
||||
if data=='none':
|
||||
data = open(SH["filename"],'rb').read()
|
||||
data = open(SH["filename"], 'rb').read()
|
||||
|
||||
for key in STH_def.keys():
|
||||
|
||||
sth = getSegyTraceHeader(SH,key,data)
|
||||
sth = getSegyTraceHeader(SH, key, data)
|
||||
SegyTraceHeaders[key]=sth
|
||||
|
||||
txt = "getAllSegyTraceHeaders : " + key
|
||||
printverbose(txt,10)
|
||||
printverbose(txt, 10)
|
||||
|
||||
return SegyTraceHeaders
|
||||
|
||||
|
||||
def readSegy(filename,endian='>'): # modified by A Squelch
|
||||
def readSegy(filename, endian='>'): # modified by A Squelch
|
||||
"""
|
||||
Data,SegyHeader,SegyTraceHeaders=getSegyHeader(filename)
|
||||
Data, SegyHeader, SegyTraceHeaders=getSegyHeader(filename)
|
||||
"""
|
||||
|
||||
printverbose("readSegy : Trying to read "+filename,0)
|
||||
printverbose("readSegy : Trying to read "+filename, 0)
|
||||
|
||||
data = open(filename,'rb').read()
|
||||
data = open(filename, 'rb').read()
|
||||
|
||||
filesize=len(data)
|
||||
|
||||
SH=getSegyHeader(filename,endian) # modified by A Squelch
|
||||
SH=getSegyHeader(filename, endian) # modified by A Squelch
|
||||
|
||||
bps=getBytePerSample(SH)
|
||||
|
||||
ntraces = (filesize-3600)/(SH['ns']*bps+240)
|
||||
|
||||
printverbose("readSegy : Length of data : " + str(filesize),2)
|
||||
printverbose("readSegy : Length of data : " + str(filesize), 2)
|
||||
|
||||
SH["ntraces"]=ntraces;
|
||||
|
||||
printverbose("readSegy : ntraces=" + str(ntraces) + " nsamples="+str(SH['ns']),2)
|
||||
printverbose("readSegy : ntraces=" + str(ntraces) + " nsamples="+str(SH['ns']), 2)
|
||||
|
||||
|
||||
# GET TRACE
|
||||
index=3600;
|
||||
nd=(filesize-3600)/bps
|
||||
|
||||
Data,SH,SegyTraceHeaders = readSegyData(data,SH,nd,bps,index,endian)
|
||||
Data, SH, SegyTraceHeaders = readSegyData(data, SH, nd, bps, index, endian)
|
||||
|
||||
printverbose("readSegy : Read segy data",2) # modified by A Squelch
|
||||
printverbose("readSegy : Read segy data", 2) # modified by A Squelch
|
||||
|
||||
return Data,SH,SegyTraceHeaders
|
||||
return Data, SH, SegyTraceHeaders
|
||||
|
||||
|
||||
def readSegyData(data,SH,nd,bps,index,endian='>'): # added by A Squelch
|
||||
def readSegyData(data, SH, nd, bps, index, endian='>'): # added by A Squelch
|
||||
"""
|
||||
Data,SegyHeader,SegyTraceHeaders=readSegyData(data,SH,nd,bps,index)
|
||||
Data, SegyHeader, SegyTraceHeaders=readSegyData(data, SH, nd, bps, index)
|
||||
|
||||
This function separated out from readSegy so that it can also be
|
||||
called from other external functions - by A Squelch.
|
||||
@@ -550,12 +550,12 @@ def readSegyData(data,SH,nd,bps,index,endian='>'): # added by A Squelch
|
||||
|
||||
# Calculate number of dummy samples needed to account for Trace Headers
|
||||
ndummy_samples=240/bps
|
||||
printverbose("readSegyData : ndummy_samples="+str(ndummy_samples),6)
|
||||
printverbose("readSegyData : ndummy_samples="+str(ndummy_samples), 6)
|
||||
|
||||
# READ ALL SEGY TRACE HEADERS
|
||||
STH = getAllSegyTraceHeaders(SH,data)
|
||||
STH = getAllSegyTraceHeaders(SH, data)
|
||||
|
||||
printverbose("readSegyData : Reading segy data",1)
|
||||
printverbose("readSegyData : Reading segy data", 1)
|
||||
|
||||
# READ ALL DATA EXCEPT FOR SEGY HEADER
|
||||
revision=SH["SegyFormatRevisionNumber"]
|
||||
@@ -575,34 +575,34 @@ def readSegyData(data,SH,nd,bps,index,endian='>'): # added by A Squelch
|
||||
print" Please check the Endian setting for this file: ", SH["filename"]
|
||||
sys.exit()
|
||||
|
||||
printverbose("readSegyData : SEG-Y revision = "+str(revision),1)
|
||||
printverbose("readSegyData : DataSampleFormat="+str(dsf)+"("+DataDescr+")",1)
|
||||
printverbose("readSegyData : SEG-Y revision = "+str(revision), 1)
|
||||
printverbose("readSegyData : DataSampleFormat="+str(dsf)+"("+DataDescr+")", 1)
|
||||
|
||||
if SH["DataSampleFormat"]==1:
|
||||
printverbose("readSegyData : Assuming DSF=1, IBM FLOATS",2)
|
||||
Data1 = getValue(data,index,'ibm',endian,nd)
|
||||
printverbose("readSegyData : Assuming DSF=1, IBM FLOATS", 2)
|
||||
Data1 = getValue(data, index, 'ibm', endian, nd)
|
||||
elif SH["DataSampleFormat"]==2:
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", 32bit INT",2)
|
||||
Data1 = getValue(data,index,'l',endian,nd)
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", 32bit INT", 2)
|
||||
Data1 = getValue(data, index, 'l', endian, nd)
|
||||
elif SH["DataSampleFormat"]==3:
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", 16bit INT",2)
|
||||
Data1 = getValue(data,index,'h',endian,nd)
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", 16bit INT", 2)
|
||||
Data1 = getValue(data, index, 'h', endian, nd)
|
||||
elif SH["DataSampleFormat"]==5:
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", IEEE",2)
|
||||
Data1 = getValue(data,index,'float',endian,nd)
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", IEEE", 2)
|
||||
Data1 = getValue(data, index, 'float', endian, nd)
|
||||
elif SH["DataSampleFormat"]==8:
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", 8bit CHAR",2)
|
||||
Data1 = getValue(data,index,'B',endian,nd)
|
||||
printverbose("readSegyData : Assuming DSF=" + str(SH["DataSampleFormat"]) + ", 8bit CHAR", 2)
|
||||
Data1 = getValue(data, index, 'B', endian, nd)
|
||||
else:
|
||||
printverbose("readSegyData : DSF=" + str(SH["DataSampleFormat"]) + ", NOT SUPORTED",2)
|
||||
printverbose("readSegyData : DSF=" + str(SH["DataSampleFormat"]) + ", NOT SUPORTED", 2)
|
||||
|
||||
Data = Data1[0]
|
||||
|
||||
printverbose("readSegyData : - reshaping",2)
|
||||
Data=reshape(Data,(SH['ntraces'],SH['ns']+ndummy_samples))
|
||||
printverbose("readSegyData : - stripping header dummy data",2)
|
||||
Data=Data[:,ndummy_samples:(SH['ns']+ndummy_samples)]
|
||||
printverbose("readSegyData : - transposing",2)
|
||||
printverbose("readSegyData : - reshaping", 2)
|
||||
Data=reshape(Data, (SH['ntraces'], SH['ns']+ndummy_samples))
|
||||
printverbose("readSegyData : - stripping header dummy data", 2)
|
||||
Data=Data[:, ndummy_samples:(SH['ns']+ndummy_samples)]
|
||||
printverbose("readSegyData : - transposing", 2)
|
||||
Data=transpose(Data)
|
||||
|
||||
# SOMEONE NEEDS TO IMPLEMENT A NICER WAY DO DEAL WITH DSF=8
|
||||
@@ -612,18 +612,18 @@ def readSegyData(data,SH,nd,bps,index,endian='>'): # added by A Squelch
|
||||
if Data[i][j]>128:
|
||||
Data[i][j]=Data[i][j]-256
|
||||
|
||||
printverbose("readSegyData : Finished reading segy data",1)
|
||||
printverbose("readSegyData : Finished reading segy data", 1)
|
||||
|
||||
return Data,SH,STH
|
||||
return Data, SH, STH
|
||||
|
||||
|
||||
def getSegyTrace(SH,itrace,endian='>'): # modified by A Squelch
|
||||
def getSegyTrace(SH, itrace, endian='>'): # modified by A Squelch
|
||||
"""
|
||||
SegyTraceHeader,SegyTraceData=getSegyTrace(SegyHeader,itrace)
|
||||
SegyTraceHeader, SegyTraceData=getSegyTrace(SegyHeader, itrace)
|
||||
itrace : trace number to read
|
||||
THIS DEF IS NOT UPDATED. NOT READY TO USE
|
||||
"""
|
||||
data = open(SH["filename"],'rb').read()
|
||||
data = open(SH["filename"], 'rb').read()
|
||||
|
||||
bps=getBytePerSample(SH)
|
||||
|
||||
@@ -633,25 +633,25 @@ def getSegyTrace(SH,itrace,endian='>'): # modified by A Squelch
|
||||
|
||||
# GET TRACE
|
||||
index=3200+(itrace-1)*(240+SH['ns']*bps)+240
|
||||
SegyTraceData = getValue(data,index,'float',endian,SH['ns'])
|
||||
return SegyTraceHeader,SegyTraceData
|
||||
SegyTraceData = getValue(data, index, 'float', endian, SH['ns'])
|
||||
return SegyTraceHeader, SegyTraceData
|
||||
|
||||
|
||||
def getSegyHeader(filename,endian='>'): # modified by A Squelch
|
||||
def getSegyHeader(filename, endian='>'): # modified by A Squelch
|
||||
"""
|
||||
SegyHeader=getSegyHeader(filename)
|
||||
"""
|
||||
data = open(filename,'rb').read()
|
||||
data = open(filename, 'rb').read()
|
||||
|
||||
SegyHeader = {'filename': filename}
|
||||
for key in SH_def.keys():
|
||||
pos=SH_def[key]["pos"]
|
||||
format=SH_def[key]["type"]
|
||||
|
||||
SegyHeader[key],index = getValue(data,pos,format,endian);
|
||||
SegyHeader[key], index = getValue(data, pos, format, endian);
|
||||
|
||||
txt = str(pos) + " " + str(format) + " Reading " + key +"="+str(SegyHeader[key])
|
||||
printverbose(txt,10)
|
||||
printverbose(txt, 10)
|
||||
|
||||
# SET NUMBER OF BYTES PER DATA SAMPLE
|
||||
bps=getBytePerSample(SegyHeader)
|
||||
@@ -660,15 +660,15 @@ def getSegyHeader(filename,endian='>'): # modified by A Squelch
|
||||
ntraces = (filesize-3600)/(SegyHeader['ns']*bps+240)
|
||||
SegyHeader["ntraces"]=ntraces;
|
||||
|
||||
printverbose('getSegyHeader : succesfully read '+filename,1)
|
||||
printverbose('getSegyHeader : succesfully read '+filename, 1)
|
||||
|
||||
|
||||
return SegyHeader
|
||||
|
||||
|
||||
def writeSegy(filename,Data,dt=1000,STHin={},SHin={}):
|
||||
def writeSegy(filename, Data, dt=1000, STHin={}, SHin={}):
|
||||
"""
|
||||
writeSegy(filename,Data,dt)
|
||||
writeSegy(filename, Data, dt)
|
||||
|
||||
Write SEGY
|
||||
|
||||
@@ -680,15 +680,15 @@ def writeSegy(filename,Data,dt=1000,STHin={},SHin={}):
|
||||
|
||||
"""
|
||||
|
||||
printverbose("writeSegy : Trying to write "+filename,0)
|
||||
printverbose("writeSegy : Trying to write "+filename, 0)
|
||||
|
||||
N=Data.shape
|
||||
ns=N[0]
|
||||
ntraces=N[1]
|
||||
print ntraces,ns
|
||||
print ntraces, ns
|
||||
|
||||
SH = getDefaultSegyHeader(ntraces,ns);
|
||||
STH = getDefaultSegyTraceHeaders(ntraces,ns,dt)
|
||||
SH = getDefaultSegyHeader(ntraces, ns);
|
||||
STH = getDefaultSegyTraceHeaders(ntraces, ns, dt)
|
||||
|
||||
# ADD STHin, if exists...
|
||||
for key in STHin.keys():
|
||||
@@ -702,12 +702,12 @@ def writeSegy(filename,Data,dt=1000,STHin={},SHin={}):
|
||||
SH[key]=SHin[key]
|
||||
|
||||
|
||||
writeSegyStructure(filename,Data,SH,STH)
|
||||
writeSegyStructure(filename, Data, SH, STH)
|
||||
|
||||
|
||||
def writeSegyStructure(filename,Data,SH,STH,endian='>'): # modified by A Squelch
|
||||
def writeSegyStructure(filename, Data, SH, STH, endian='>'): # modified by A Squelch
|
||||
"""
|
||||
writeSegyStructure(filename,Data,SegyHeader,SegyTraceHeaders)
|
||||
writeSegyStructure(filename, Data, SegyHeader, SegyTraceHeaders)
|
||||
|
||||
Write SEGY file using SegyPy data structures
|
||||
|
||||
@@ -717,9 +717,9 @@ def writeSegyStructure(filename,Data,SH,STH,endian='>'): # modified by A Squelc
|
||||
|
||||
"""
|
||||
|
||||
printverbose("writeSegyStructure : Trying to write "+filename,0)
|
||||
printverbose("writeSegyStructure : Trying to write "+filename, 0)
|
||||
|
||||
f = open(filename,'wb')
|
||||
f = open(filename, 'wb')
|
||||
|
||||
# VERBOSE INF
|
||||
revision=SH["SegyFormatRevisionNumber"]
|
||||
@@ -737,8 +737,8 @@ def writeSegyStructure(filename,Data,SH,STH,endian='>'): # modified by A Squelc
|
||||
print" Please check the Endian setting for this file: ", SH["filename"]
|
||||
sys.exit()
|
||||
|
||||
printverbose("writeSegyStructure : SEG-Y revision = "+str(revision),1)
|
||||
printverbose("writeSegyStructure : DataSampleFormat="+str(dsf)+"("+DataDescr+")",1)
|
||||
printverbose("writeSegyStructure : SEG-Y revision = "+str(revision), 1)
|
||||
printverbose("writeSegyStructure : DataSampleFormat="+str(dsf)+"("+DataDescr+")", 1)
|
||||
|
||||
# WRITE SEGY HEADER
|
||||
|
||||
@@ -746,7 +746,7 @@ def writeSegyStructure(filename,Data,SH,STH,endian='>'): # modified by A Squelc
|
||||
pos=SH_def[key]["pos"]
|
||||
format=SH_def[key]["type"]
|
||||
value=SH[key]
|
||||
putValue(value,f,pos,format,endian);
|
||||
putValue(value, f, pos, format, endian);
|
||||
|
||||
# SEGY TRACES
|
||||
|
||||
@@ -759,29 +759,29 @@ def writeSegyStructure(filename,Data,SH,STH,endian='>'): # modified by A Squelc
|
||||
|
||||
for itrace in range(SH['ntraces']):
|
||||
index=3600+itrace*sizeT
|
||||
printverbose('Writing Trace #'+str(itrace+1)+'/'+str(SH['ntraces']),10)
|
||||
printverbose('Writing Trace #'+str(itrace+1)+'/'+str(SH['ntraces']), 10)
|
||||
# WRITE SEGY TRACE HEADER
|
||||
for key in STH_def.keys():
|
||||
pos=index+STH_def[key]["pos"]
|
||||
format=STH_def[key]["type"]
|
||||
value=STH[key][itrace]
|
||||
txt = str(pos) + " " + str(format) + " Writing " + key + "=" + str(value)
|
||||
printverbose(txt,40)
|
||||
putValue(value,f,pos,format,endian);
|
||||
printverbose(txt, 40)
|
||||
putValue(value, f, pos, format, endian);
|
||||
|
||||
# Write Data
|
||||
cformat=endian + ctype
|
||||
for s in range(SH['ns']):
|
||||
strVal=struct.pack(cformat, Data[s,itrace])
|
||||
strVal=struct.pack(cformat, Data[s, itrace])
|
||||
f.seek(index+240+s*struct.calcsize(cformat))
|
||||
f.write(strVal);
|
||||
|
||||
f.close
|
||||
|
||||
|
||||
def putValue(value,fileid,index,ctype='l',endian='>',number=1):
|
||||
def putValue(value, fileid, index, ctype='l', endian='>', number=1):
|
||||
"""
|
||||
putValue(data,index,ctype,endian,number)
|
||||
putValue(data, index, ctype, endian, number)
|
||||
"""
|
||||
if (ctype=='l')|(ctype=='long')|(ctype=='int32'):
|
||||
ctype='l'
|
||||
@@ -800,11 +800,11 @@ def putValue(value,fileid,index,ctype='l',endian='>',number=1):
|
||||
elif ctype=='ibm':
|
||||
pass
|
||||
else:
|
||||
printverbose('Bad Ctype : ' +ctype,-1)
|
||||
printverbose('Bad Ctype : ' +ctype, -1)
|
||||
|
||||
cformat=endian + ctype*number
|
||||
|
||||
printverbose('putValue : cformat : ' + cformat + ' ctype=' + ctype,40)
|
||||
printverbose('putValue : cformat : ' + cformat + ' ctype=' + ctype, 40)
|
||||
|
||||
strVal=struct.pack(cformat, value)
|
||||
fileid.seek(index)
|
||||
@@ -814,9 +814,9 @@ def putValue(value,fileid,index,ctype='l',endian='>',number=1):
|
||||
return 1
|
||||
|
||||
|
||||
def getValue(data,index,ctype='l',endian='>',number=1):
|
||||
def getValue(data, index, ctype='l', endian='>', number=1):
|
||||
"""
|
||||
getValue(data,index,ctype,endian,number)
|
||||
getValue(data, index, ctype, endian, number)
|
||||
"""
|
||||
if (ctype=='l')|(ctype=='long')|(ctype=='int32'):
|
||||
size=l_long
|
||||
@@ -842,12 +842,12 @@ def getValue(data,index,ctype='l',endian='>',number=1):
|
||||
elif ctype=='ibm':
|
||||
size=l_float
|
||||
else:
|
||||
printverbose('Bad Ctype : ' +ctype,-1)
|
||||
printverbose('Bad Ctype : ' +ctype, -1)
|
||||
|
||||
|
||||
cformat=endian + ctype*number
|
||||
|
||||
printverbose('getValue : cformat : ' + cformat,40)
|
||||
printverbose('getValue : cformat : ' + cformat, 40)
|
||||
|
||||
index_end=index+size*number
|
||||
|
||||
@@ -863,24 +863,24 @@ def getValue(data,index,ctype='l',endian='>',number=1):
|
||||
Value=struct.unpack(cformat, data[index:index_end])
|
||||
|
||||
if ctype=='B':
|
||||
printverbose('getValue : Ineficient use of 1byte Integer...',-1)
|
||||
printverbose('getValue : Ineficient use of 1byte Integer...', -1)
|
||||
|
||||
vtxt = 'getValue : '+'start='+str(index)+' size='+str(size)+ ' number='+str(number)+' Value='+str(Value)+' cformat='+str(cformat)
|
||||
printverbose(vtxt,20)
|
||||
printverbose(vtxt, 20)
|
||||
|
||||
if number==1:
|
||||
return Value[0], index_end
|
||||
else:
|
||||
return Value,index_end
|
||||
return Value, index_end
|
||||
|
||||
|
||||
|
||||
def print_version():
|
||||
print 'SegyPY version is ', version
|
||||
|
||||
def printverbose(txt,level=1):
|
||||
def printverbose(txt, level=1):
|
||||
if level<=verbose:
|
||||
print 'SegyPY',version,': ',txt
|
||||
print 'SegyPY', version, ': ', txt
|
||||
|
||||
|
||||
##############
|
||||
@@ -892,8 +892,8 @@ def ibm2Ieee(ibm_float):
|
||||
(C) Secchi Angelo
|
||||
with thanks to Howard Lightstone and Anton Vredegoor.
|
||||
"""
|
||||
i = struct.unpack('>I',ibm_float)[0]
|
||||
sign = [1,-1][bool(i & 0x100000000L)]
|
||||
i = struct.unpack('>I', ibm_float)[0]
|
||||
sign = [1, -1][bool(i & 0x100000000L)]
|
||||
characteristic = ((i >> 24) & 0x7f) - 64
|
||||
fraction = (i & 0xffffff)/float(0x1000000L)
|
||||
return sign*16**characteristic*fraction
|
||||
@@ -911,7 +911,7 @@ def ibm2ieee2(ibm_float):
|
||||
|
||||
if ibm_float == 0:
|
||||
return 0.0
|
||||
istic,a,b,c=struct.unpack('>BBBB',ibm_float)
|
||||
istic, a, b, c=struct.unpack('>BBBB', ibm_float)
|
||||
if istic >= 128:
|
||||
sign= -1.0
|
||||
istic = istic - 128
|
||||
@@ -938,7 +938,7 @@ def getBytePerSample(SH):
|
||||
print" Please check the Endian setting for this file: ", SH["filename"]
|
||||
sys.exit()
|
||||
|
||||
printverbose("getBytePerSample : bps="+str(bps),21);
|
||||
printverbose("getBytePerSample : bps="+str(bps), 21);
|
||||
|
||||
return bps
|
||||
|
||||
|
||||
Reference in New Issue
Block a user