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Revision 1.2 by greg, Tue Dec 9 15:59:06 2003 UTC vs.
Revision 1.7 by greg, Thu Jun 4 01:19:30 2015 UTC

# Line 5 | Line 5 | pcompos - composite RADIANCE pictures.
5   .SH SYNOPSIS
6   .B pcompos
7   [
8 + .B \-h
9 + ][
10   .B "\-x xres"
11   ][
12   .B "\-y yres"
# Line 74 | Line 76 | The
76   option specifies a background color to appear wherever input
77   files do not cover.
78   The default value is black (0 0 0).
79 + The
80 + .I \-h
81 + option may be used to reduce the information header size, which
82 + can grow disproportionately after multiple runs of
83 + .I pcompos
84 + and/or
85 + .I pcomb(1).
86   .PP
87   If input files overlap, later pictures will overwrite earlier ones.
88   By default, input files are copied unconditionally within the output
# Line 134 | Line 143 | option will cause each image to be separated by at lea
143   The
144   .I "\-o x0 y0"
145   option specifies a nonzero anchor point for the bottom left image.
146 + If a negative value is given for ncols, then the rows are reversed,
147 + so they start from the top rather than the bottom.
148 + This gives a more natural ordering in most cases, but has the
149 + side-effect of moving any labels from the upper-left of each placed
150 + subimage to the lower-left.
151 + Also, the
152 + .I \-o
153 + option is interpreted differently, where the y0 value is number of
154 + pixels from the top (rather than the bottom).
155   .PP
156   The standard input can be specified with a hyphen ('-').
157   A command that produces a RADIANCE picture can be given in place of a file
# Line 141 | Line 159 | by preceeding it with an exclamation point ('!').
159   .SH EXAMPLE
160   To put a copyright label at the bottom of a picture:
161   .IP "" .2i
162 < psign Copyright 1987 | pcompos pic.inp 0 0 +t .5 - 384 64 > pic.out
162 > psign Copyright 1987 | pcompos inp.hdr 0 0 +t .5 - 384 64 > out.hdr
163   .PP
164 < To make a catalog of images separated by white 10-pixel borders:
164 > To make a catalog of images separated by white 10-pixel borders and
165 > ordered four images per row starting from the top-left:
166   .IP "" .2i
167 < pcompos -la -a 4 -s 10 -b 1 1 1 dog*.pic > alldogs.pic
167 > pcompos -la -a -4 -s 10 -b 1 1 1 dog*.hdr > alldogs.hdr
168   .SH NOTES
169   Since there is a limit to the number of open files and processes,
170   large collections of images must be created in stages.
171   Even if the system limit on open files is large,
172   .I pcompos
173 < places an artificial limit of 64 on the number of open files and/or
173 > places an artificial limit of 1024 on the number of open files and/or
174   processes.
175   .SH AUTHOR
176   Greg Ward
177   .SH "SEE ALSO"
178 < getinfo(1), pfilt(1), psign(1), rpict(1)
178 > getinfo(1), pcomb(1), pfilt(1), psign(1), rpict(1)

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