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2026-06-27 16:44:26 +08:00 · 2015-07-28 16:49:34 +08:00
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+usage: ascii2segy_segpy.py [-h] [-o OUTFILE] [-s SAMPLE_RATE] [-m MAX_TIME]
+                           [--dtype DTYPE] [-d SEISMIC_DIMENSIONS] [-e]
+                           [-v VERBOSITY] [-t]
+                           infile
+
+ascii2segy
+
+This script uses segpy-rewrite to convert velf ascii files to segy files. 
+Please use 64 bit python for large files as data is loaded into memory.
+
+Run with -h to get more information on parameters.
+
+Outputs
+-------
+A segy file containing the velocities from the input ascii file.
+
+Inputs
+-------
+Example input file format:
+
+###############################################################################
+#BEGIN HEADER
+#X
+#Y
+#Z (time)
+#FLOAT  "Stacking Velocity"
+#FLOAT  "XLINE"
+#FLOAT  "INLINE"
+#END HEADER
+   7618446.0      141544.0             0.0          1510.0       10040.0        2060    
+   7618446.0      141544.0            40.0          1510.0       10040.0        2060
+   7618446.0      141544.0            80.0          1510.0       10040.0        2060
+
+Examples
+--------
+ascii2segy.py test.csv -o test.sgy
+ascii2segy.py -h
+ascii2segy.py test.csv -s 40 -m 5000 -c 15 -n 4 -d 2 -v 3 -e 1
+
+Installation
+-------
+Make sure you have 64bit python 3.3 installation
+Install the requirements listed in requirements.txt. Note that this uses 
+segpy 2.0.0a2 from github.com/rob-smallshire/segpy which you can install using 
+the command below: 
+```
+pip install git+git://github.com/sixty-north/segpy/tree/91562fddfd6d8424ee4161f4417982243512c150
+```
+In a command propmt with python64 3.3 install and test:
+```
+pip install -r requirements.txt
+python ascii2segy ./test_data/test_input.tsv
+```
+
+License
+------
+This inherits it's license from segpy
+
+More Info
+-------
+Created on Mon Aug 04 09:11:11 2014
+
+positional arguments:
+  infile                Input ascii velovity file in western (velf) format.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -o OUTFILE, --outfile OUTFILE
+                        Optional output segy filename, e.g. outfile.sgy.
+                        Defaults to infile.sgy. (default: None)
+  -s SAMPLE_RATE, --sample-rate SAMPLE_RATE
+                        If not provided this is autodetected from input data.
+                        The velocities are resampled to this rate in
+                        milliseconds. (default: None)
+  -m MAX_TIME, --max-time MAX_TIME
+                        If not provided this is autodetected from input data.
+                        The maximum time of the segy in ms. (default: None)
+  --dtype DTYPE         Datatype for segy {8: 'int8', 1: 'ibm', 2: 'int32', 3:
+                        'int16', 5: 'float32'}
+  -d SEISMIC_DIMENSIONS, --seismic-dimensions SEISMIC_DIMENSIONS
+                        Type of seismic, options 2 or 3. (default: 3)
+  -e, --use-extended-header
+                        Use the segy extended header in the output, this will
+                        contain the header from the text file. Defaults to
+                        false. (default: False)
+  -v VERBOSITY, --verbosity VERBOSITY
+                        Print more information, can be 0, 1, or 2. (default:
+                        0)
+  -t, --test            Run sanity tests. (default: False)
+To exit: use 'exit', 'quit', or Ctrl-D.
+An exception has occurred, use %tb to see the full traceback.