segpy.dataset module¶

class segpy.dataset.Dataset¶

Bases: object

data_sample_format¶: The data type of the samples in machine-readable form. One of the values from datatypes.DATA_SAMPLE_FORMAT.

data_sample_format_description¶: A descriptive human-readable description of the data sample format

dimensionality¶: The spatial dimensionality of the data: 3 for 3D seismic volumes, 2 for 2D seismic lines, 1 for a single trace_samples, otherwise 0.

textual_reel_header¶: The textual real header as an immutable sequence of forty Unicode strings each 80 characters long.

trace_header(trace_index)¶

The trace header for a given trace index.

Parameters:	trace_index – An integer in the range zero to num_traces() - 1
Returns:	A TraceHeader corresponding to the requested trace_samples.

trace_indexes()¶

An iterator over zero-based trace_samples indexes.

Returns:	An iterator which yields integers in the range zero to num_traces - 1

trace_samples(trace_index, start=None, stop=None)¶

The trace samples for a given trace index.

Parameters:	trace_index – An integer in the range zero to num_traces - 1 start – Optional zero-based start sample index. The default is to read from the first (i.e. zeroth) sample. stop – Optional zero-based stop sample index. Following Python slice convention this is one beyond the end.
Returns:	A sequence of numeric trace_samples samples.

class segpy.dataset.DelegatingDataset(source_dataset)¶

A Dataset which by default forwards to a source Dataset.

This base class is useful if you only want to override a few methods to perform transformations.