def test_segy_header_scan_all(temp_dir, temp_segy):
_, scanned = segy_header_scan(temp_segy, max_traces_scan=0, silent=True)
assert scanned == TEST_SEGY_SIZE**2
_, scanned = segy_header_scan(temp_segy,
max_traces_scan='all',
silent=True)
assert scanned == TEST_SEGY_SIZE**2
def test_segy_header_scan_all(temp_dir, temp_segy):
_ = segy_header_scan(temp_segy, max_traces_scan=0, silent=True)
scanned = _.nscan
assert scanned == TEST_SEGY_SIZE**2
_ = segy_header_scan(temp_segy, max_traces_scan="all", silent=True)
scanned = _.nscan
assert scanned == TEST_SEGY_SIZE**2
def test_segy_header_scan(temp_dir, temp_segy):
head = segy_header_scan(temp_segy)
scanned = head.nscan
assert scanned == TEST_SEGY_SIZE ** 2
# assert isinstance(head, dict) now a dataframe
head = segy_header_scan(temp_segy, max_traces_scan=TEST_SEGY_SIZE, silent=True)
scanned = head.nscan
assert scanned == TEST_SEGY_SIZE
def test_segy_header_scan(temp_dir, temp_segy):
head, scanned = segy_header_scan(temp_segy)
assert scanned == TEST_SEGY_SIZE**2
assert isinstance(head, dict)
head, scanned = segy_header_scan(temp_segy,
max_traces_scan=TEST_SEGY_SIZE,
silent=True)
assert scanned == TEST_SEGY_SIZE
assert isinstance(head, dict)
def scan(max_traces, filename):
input_file = pathlib.Path(filename)
hscan = segy_header_scan(input_file, max_traces_scan=max_traces)
click.echo(f"Traces scanned: {hscan.nscan}")
import pandas as pd
pd.set_option("display.max_rows", hscan.shape[0])
click.echo(hscan[["byte_loc", "min", "max", "mean"]])
def scan(max_traces, filename):
input_file = pathlib.Path(filename)
hscan, nscan = segy_header_scan(input_file, max_traces_scan=max_traces)
click.echo(f"Traces scanned: {nscan}")
click.echo("{:>40s} {:>8s} {:>10s} {:>10s}".format("Item", "Byte Loc",
"Min", "Max"))
for key, item in hscan.items():
click.echo("{:>40s} {:>8d} {:>10.0f} {:>10.0f}".format(
key, item[0], item[1], item[2]))
def main():
# how to track down warnings
#import warnings
#warnings.filterwarnings('error', category=UnicodeWarning)
#warnings.filterwarnings('error', category=DeprecationWarning, module='numpy')
#parse args
sys_parser = segysakArgsParser()
args = sys_parser.parse_args()
# gaffe
print(f'SEGY-SAK - v{version}')
# initialise logging
LOGGER.info(f'segysak v{version}')
# check inputs
checked_files = check_file(args.files)
# Generate or Load Configuration File
for input_file in checked_files:
print(input_file.name)
# Print EBCIDC header
if args.ebcidc:
try:
print(get_segy_texthead(input_file))
except IOError:
LOGGER.error(
"Input SEGY file was not found - check name and path")
if args.scan > 0:
hscan, nscan = segy_header_scan(input_file,
max_traces_scan=args.scan)
width = 10
print(f'Traces scanned: {nscan}')
print("{:>40s} {:>8s} {:>10s} {:>10s}".format(
'Item', 'Byte Loc', 'Min', 'Max'))
for key, item in hscan.items():
print("{:>40s} {:>8d} {:>10.0f} {:>10.0f}".format(
key, item[0], item[1], item[2]))
iline = args.iline
xline = args.xline
if args.netCDF is None or args.netCDF is not False:
if args.netCDF is None:
outfile = input_file.stem + '.SEISNC'
else:
outfile = args.netCDF
_ = segy_loader(input_file,
ncfile=outfile,
iline=iline,
xline=xline,
ix_crop=args.crop)
LOGGER.info(f"NetCDF output written to {outfile}")
if args.SEGY is None or args.SEGY is not False:
if args.SEGY is None:
outfile = input_file.stem + '.segy'
else:
outfile = args.SEGY
ncdf2segy(input_file, outfile, iline=iline,
xline=xline) #, crop=args.crop)
LOGGER.info(f"SEGY output written to {outfile}")
# %% from segysak.segy import get_segy_texthead get_segy_texthead(V3D_path) # %% [markdown] # If you need to investigate the trace header data more deeply, then *segy_header_scan* can be used to report # basic statistic of each byte position for a limited number of traces. # # *segy_header_scan* returns a `pandas.DataFrame`. To see the full DataFrame use the `pandas` option_context manager. # %% from segysak.segy import segy_header_scan scan = segy_header_scan(V3D_path) scan # %% [markdown] # The header report can also be reduced by filtering blank byte locations. Here we use the standard deviation `std` # to filter away blank values which can help us to understand the composition of the data. # # For instance, key values like **trace UTM coordinates** are located in bytes *73* for X & *77* for Y. We # can also see the byte positions of the **local grid** for INLINE_3D in byte *189* and for CROSSLINE_3D in byte *193*. # %% scan[scan["std"] > 0] # %% [markdown] # To retreive the raw header content use `segy_header_scrape`. Setting `partial_scan=None` will return the # full dataframe of trace header information.
