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Comparing ray/doc/man/man1/rcrop.1 (file contents):
Revision 1.4 by greg, Wed Mar 16 00:06:08 2022 UTC vs.
Revision 1.9 by greg, Fri May 17 20:50:57 2024 UTC

# Line 35 | Line 35 | If a 0 value is specified for the number of rows to co
35   will be copied, starting from row0.
36   Similarly, a 0 value for the number of columns to copy implies all
37   columns >= col0 will be copied.
38 + A negative count for the number of rows or columns cuts the
39 + corresponding amount off the end(s).
40   .PP
41   Using
42   .I rcrop
# Line 46 | Line 48 | and preserves the exposure in a way that is compatible
48   However, one must remember that rows correspond to Y
49   coordinates, and the orientation is reversed from a standard
50   picture, where Y=0 is the bottom scanline.
51 + Spectral pictures, as might be produced by
52 + .I rtrace(1)
53 + or
54 + .I rfluxmtx(1),
55 + are also supported.
56   .PP
57 + All matrix formats are supported, including text (ASCII), binary float
58 + and double.
59   The
60   .I rcrop
61   tool also works on encoded normal vector files produced by
62   .I rcode_norm(1)
63   and encoded depth files produced by
64   .I rcode_depth(1).
65 < However, it is not able to crop identifier files produced by
66 < .I rcode_ident(1).
65 > Data is copied verbatim, i.e., there is no internal conversion to
66 > another representation, although white space may change in text files.
67   .PP
68   If no input file is given, data will be taken from the standard input.
69   If no output file is specified, data will be copied to the standard output.
61 All matrix formats are supported, including text (ASCII), binary float
62 and double.
63 Data is copied verbatim, i.e., there is no internal conversion to
64 another representation, although white space may change in text files.
70   .SH EXAMPLES
71   To crop a matrix down to 15 rows by 19 columns,
72   starting at row 10 and column 12:
# Line 87 | Line 92 | rmtxop -fa '!rcrop 15 0 1 0 mat1.mtx' '!rcrop 0 27 0 1
92   .SH AUTHOR
93   Greg Ward
94   .SH "SEE ALSO"
95 < evalglare(1), pcompos(1), rcalc(1), rcode_depth(1), rcode_ident(1),
96 < rcode_norm(1), rcollate(1), rfluxmtx(1), rmtxop(1), rsplit(1)
95 > evalglare(1), pcompos(1), rcalc(1), rcode_depth(1), rcode_norm(1),
96 > rcollate(1), rcomb(1), rfluxmtx(1), rmtxop(1), rsplit(1), rtrace(1)

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