How to use the segyio._segyio.fread_trace0 function in segyio
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equinor / segyio / tests / test_segyio_c.py View on Github 
def test_read_line_mmap(self):
f, metrics, iline_idx, xline_idx = self.read_small(True)
tr0 = metrics['trace0']
bsz = metrics['trace_bsize']
samples = metrics['sample_count']
xline_stride = metrics['xline_stride']
iline_stride = metrics['iline_stride']
offsets = metrics['offset_count']
xline_trace0 = _segyio.fread_trace0(20, len(iline_idx), xline_stride, offsets, xline_idx, "crossline")
iline_trace0 = _segyio.fread_trace0(1, len(xline_idx), iline_stride, offsets, iline_idx, "inline")
buf = numpy.zeros((len(iline_idx), samples), dtype=numpy.single)
_segyio.read_line(f, xline_trace0, len(iline_idx), xline_stride, offsets, buf, tr0, bsz, 1, samples)
self.assertAlmostEqual(sum(sum(buf)), 800.061169624, places=6)
_segyio.read_line(f, iline_trace0, len(xline_idx), iline_stride, offsets, buf, tr0, bsz, 1, samples)
self.assertAlmostEqual(sum(sum(buf)), 305.061146736, places=6)
_segyio.close(f)def test_read_line_mmap(self):
f, metrics, iline_idx, xline_idx = self.read_small(True)
tr0 = metrics['trace0']
bsz = metrics['trace_bsize']
samples = metrics['sample_count']
xline_stride = metrics['xline_stride']
iline_stride = metrics['iline_stride']
offsets = metrics['offset_count']
xline_trace0 = _segyio.fread_trace0(20, len(iline_idx), xline_stride, offsets, xline_idx, "crossline")
iline_trace0 = _segyio.fread_trace0(1, len(xline_idx), iline_stride, offsets, iline_idx, "inline")
buf = numpy.zeros((len(iline_idx), samples), dtype=numpy.single)
_segyio.read_line(f, xline_trace0, len(iline_idx), xline_stride, offsets, buf, tr0, bsz, 1, samples)
self.assertAlmostEqual(sum(sum(buf)), 800.061169624, places=6)
_segyio.read_line(f, iline_trace0, len(xline_idx), iline_stride, offsets, buf, tr0, bsz, 1, samples)
self.assertAlmostEqual(sum(sum(buf)), 305.061146736, places=6)
_segyio.close(f)offsets = numpy.zeros(metrics['offset_count'], dtype=numpy.uintc)
_segyio.init_indices(f, metrics, iline_indexes, xline_indexes, offsets)
with self.assertRaises(KeyError):
_segyio.fread_trace0(0, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
with self.assertRaises(KeyError):
_segyio.fread_trace0(2, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
value = _segyio.fread_trace0(1, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 0)
value = _segyio.fread_trace0(2, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 5)
value = _segyio.fread_trace0(21, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 1)
value = _segyio.fread_trace0(22, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 2)
_segyio.close(f)iline_indexes = numpy.zeros(metrics['iline_count'], dtype=numpy.uintc)
xline_indexes = numpy.zeros(metrics['xline_count'], dtype=numpy.uintc)
offsets = numpy.zeros(metrics['offset_count'], dtype=numpy.uintc)
_segyio.init_indices(f, metrics, iline_indexes, xline_indexes, offsets)
with self.assertRaises(KeyError):
_segyio.fread_trace0(0, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
with self.assertRaises(KeyError):
_segyio.fread_trace0(2, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
value = _segyio.fread_trace0(1, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 0)
value = _segyio.fread_trace0(2, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 5)
value = _segyio.fread_trace0(21, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 1)
value = _segyio.fread_trace0(22, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 2)
_segyio.close(f)sorting = metrics['sorting']
trace_count = metrics['trace_count']
inline_count = metrics['iline_count']
crossline_count = metrics['xline_count']
offset_count = metrics['offset_count']
line_metrics = _segyio.init_line_metrics(sorting, trace_count, inline_count, crossline_count, offset_count)
iline_indexes = numpy.zeros(metrics['iline_count'], dtype=numpy.uintc)
xline_indexes = numpy.zeros(metrics['xline_count'], dtype=numpy.uintc)
offsets = numpy.zeros(metrics['offset_count'], dtype=numpy.uintc)
_segyio.init_indices(f, metrics, iline_indexes, xline_indexes, offsets)
with self.assertRaises(KeyError):
_segyio.fread_trace0(0, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
with self.assertRaises(KeyError):
_segyio.fread_trace0(2, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
value = _segyio.fread_trace0(1, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 0)
value = _segyio.fread_trace0(2, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 5)
value = _segyio.fread_trace0(21, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 1)
value = _segyio.fread_trace0(22, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 2)with self.assertRaises(KeyError):
_segyio.fread_trace0(0, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
with self.assertRaises(KeyError):
_segyio.fread_trace0(2, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
value = _segyio.fread_trace0(1, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 0)
value = _segyio.fread_trace0(2, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 5)
value = _segyio.fread_trace0(21, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 1)
value = _segyio.fread_trace0(22, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 2)
_segyio.close(f)def test_read_line(self):
f, metrics, iline_idx, xline_idx = self.read_small()
tr0 = metrics['trace0']
bsz = metrics['trace_bsize']
samples = metrics['sample_count']
xline_stride = metrics['xline_stride']
iline_stride = metrics['iline_stride']
offsets = metrics['offset_count']
xline_trace0 = _segyio.fread_trace0(20, len(iline_idx), xline_stride, offsets, xline_idx, "crossline")
iline_trace0 = _segyio.fread_trace0(1, len(xline_idx), iline_stride, offsets, iline_idx, "inline")
buf = numpy.zeros((len(iline_idx), samples), dtype=numpy.single)
_segyio.read_line(f, xline_trace0, len(iline_idx), xline_stride, offsets, buf, tr0, bsz, 1, samples)
self.assertAlmostEqual(sum(sum(buf)), 800.061169624, places=6)
_segyio.read_line(f, iline_trace0, len(xline_idx), iline_stride, offsets, buf, tr0, bsz, 1, samples)
self.assertAlmostEqual(sum(sum(buf)), 305.061146736, places=6)
_segyio.close(f)offset_count = metrics['offset_count']
line_metrics = _segyio.init_line_metrics(sorting, trace_count, inline_count, crossline_count, offset_count)
iline_indexes = numpy.zeros(metrics['iline_count'], dtype=numpy.uintc)
xline_indexes = numpy.zeros(metrics['xline_count'], dtype=numpy.uintc)
offsets = numpy.zeros(metrics['offset_count'], dtype=numpy.uintc)
_segyio.init_indices(f, metrics, iline_indexes, xline_indexes, offsets)
with self.assertRaises(KeyError):
_segyio.fread_trace0(0, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
with self.assertRaises(KeyError):
_segyio.fread_trace0(2, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
value = _segyio.fread_trace0(1, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 0)
value = _segyio.fread_trace0(2, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 5)
value = _segyio.fread_trace0(21, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 1)
value = _segyio.fread_trace0(22, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 2)
_segyio.close(f)inline_count = metrics['iline_count']
crossline_count = metrics['xline_count']
offset_count = metrics['offset_count']
line_metrics = _segyio.init_line_metrics(sorting, trace_count, inline_count, crossline_count, offset_count)
iline_indexes = numpy.zeros(metrics['iline_count'], dtype=numpy.uintc)
xline_indexes = numpy.zeros(metrics['xline_count'], dtype=numpy.uintc)
offsets = numpy.zeros(metrics['offset_count'], dtype=numpy.uintc)
_segyio.init_indices(f, metrics, iline_indexes, xline_indexes, offsets)
with self.assertRaises(KeyError):
_segyio.fread_trace0(0, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
with self.assertRaises(KeyError):
_segyio.fread_trace0(2, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
value = _segyio.fread_trace0(1, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 0)
value = _segyio.fread_trace0(2, len(xline_indexes), line_metrics['iline_stride'], offset_count, iline_indexes, "inline")
self.assertEqual(value, 5)
value = _segyio.fread_trace0(21, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 1)
value = _segyio.fread_trace0(22, len(iline_indexes), line_metrics['xline_stride'], offset_count, xline_indexes, "crossline")
self.assertEqual(value, 2)
_segyio.close(f)
Popular segyio functions
- segyio._segyio
- segyio._segyio.close
- segyio._segyio.fread_trace0
- segyio._segyio.get_field
- segyio._segyio.init_indices
- segyio._segyio.init_line_metrics
- segyio._segyio.init_metrics
- segyio._segyio.open
- segyio._segyio.read_binaryheader
- segyio._segyio.set_field
- segyio.BinField
- segyio.create
- segyio.open
- segyio.spec
- segyio.su
- segyio.tools
- segyio.tools.cube
- segyio.TraceField
- segyio.TraceSortingFormat
- segyio.TraceSortingFormat.INLINE_SORTING