How various features map to SEG-Y Revision numbers and `segyio`'s capability

SEG-Y_revisions_and_segyio.md

	Rev 0	Rev 1	Rev 2		segyio r	segyio w
Byte order
Big endian	1	1	1
Little endian	0	0	1
Pairwise byte-swapped	0	0	1
Number formats
8-bit int	0	1	1
8-bit uint	0	0	1
16-bit int	0	0	1
16-bit uint	0	0	1
16-bit float	0	0	1
16-bit fixed point	1	0	0
24-bit int	0	0	1
24-bit uint	0	0	1
32-bit int	0	0	1
32-bit uint	0	0	1
32-bit IBM float	1	1	1
32-bit IEEE float	0	1	1
32-bit fixed point	1	0	0
64-bit int	0	0	1
64-bit uint	0	0	1
64-bit IEEE float	0	0	1
Headers & trailers
128b tape label	0	1	1
EBCDIC file header	1	1	1
ASCII file header	0	1	1
Binary file header	1	1	1
≤ 216 extended file headers	0	1	1
≤ 232 extended file headers	0	0	1
1 mandatory trace header	1	1	1
< 216 optional trace headers	0	0	1
X optional file trailers	0	0	1
Traces
Variable trace length	0	1	1
≤ 216 samples per trace	1	1	1
≤ 232 samples per trace	0	0	1
≤ 215 traces	1	1	1
≤ 232 traces	0	0	1

References

• Rev 0 specification
• Rev 1 specification
• Rev 2 specification
• Summary table