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Distinguish between Rev 0 and Rev 1 trace header formats.

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Robert Smallshire
2015-04-27 12:51:39 +02:00
parent 7da4f755da
commit cf3b6f1f70
1 changed files with 11 additions and 2 deletions
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segpy/trace_header.py
+11 -2
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@@ -2,7 +2,7 @@ from segpy.header import FormatMeta, field, BuildFromFormat
from segpy.types import Int32, Int16
class TraceHeaderFormat(metaclass=FormatMeta):
class TraceHeaderFormatRev0(metaclass=FormatMeta):
line_sequence_num = field(
Int32, offset=1, default=0, documentation=
@@ -385,6 +385,9 @@ class TraceHeaderFormat(metaclass=FormatMeta):
"Over travel associated with taper at beginning or end of line. 1 = down (or behind) 2 = up (or ahead)"
)
class TraceHeaderFormatRev1(TraceHeaderFormatRev0):
cdp_x = field(
Int32, offset=181, default=0, documentation=
"X coordinate of ensemble (CDP) position of this trace. "
@@ -554,7 +557,13 @@ class TraceHeaderFormat(metaclass=FormatMeta):
"6 = Kilograms (kg)"
)
class TraceHeader(metaclass=BuildFromFormat, format_class=TraceHeaderFormat):
class TraceHeaderRev0(metaclass=BuildFromFormat, format_class=TraceHeaderFormatRev0):
pass
class TraceHeaderRev1(metaclass=BuildFromFormat, format_class=TraceHeaderFormatRev1):
pass