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.\" RCSid "$Id" |
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.\" RCSid "$Id$" |
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.TH PCOMPOS 1 12/18/97 RADIANCE |
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.SH NAME |
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pcompos - composite RADIANCE pictures. |
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.SH SYNOPSIS |
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.B pcompos |
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[ |
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.B \-h |
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][ |
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.B "\-x xres" |
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][ |
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.B "\-y yres" |
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option specifies a background color to appear wherever input |
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files do not cover. |
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The default value is black (0 0 0). |
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The |
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.I \-h |
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option may be used to reduce the information header size, which |
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can grow disproportionately after multiple runs of |
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.I pcompos |
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and/or |
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.I pcomb(1). |
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.PP |
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If input files overlap, later pictures will overwrite earlier ones. |
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By default, input files are copied unconditionally within the output |
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The |
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.I "\-o x0 y0" |
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option specifies a nonzero anchor point for the bottom left image. |
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If a negative value is given for ncols, then the rows are reversed, |
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so they start from the top rather than the bottom. |
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This gives a more natural ordering in most cases, but has the |
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side-effect of moving any labels from the upper-left of each placed |
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subimage to the lower-left. |
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Also, the |
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.I \-o |
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option is interpreted differently, where the y0 value is number of |
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pixels from the top (rather than the bottom). |
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.PP |
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The standard input can be specified with a hyphen ('-'). |
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A command that produces a RADIANCE picture can be given in place of a file |
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.SH EXAMPLE |
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To put a copyright label at the bottom of a picture: |
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.IP "" .2i |
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psign Copyright 1987 | pcompos pic.inp 0 0 +t .5 - 384 64 > pic.out |
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psign Copyright 1987 | pcompos inp.hdr 0 0 +t .5 - 384 64 > out.hdr |
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.PP |
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To make a catalog of images separated by white 10-pixel borders: |
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To make a catalog of images separated by white 10-pixel borders and |
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ordered four images per row starting from the top-left: |
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.IP "" .2i |
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pcompos -la -a 4 -s 10 -b 1 1 1 dog*.pic > alldogs.pic |
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pcompos -la -a -4 -s 10 -b 1 1 1 dog*.hdr > alldogs.hdr |
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.SH NOTES |
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Since there is a limit to the number of open files and processes, |
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large collections of images must be created in stages. |
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Even if the system limit on open files is large, |
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.I pcompos |
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places an artificial limit of 64 on the number of open files and/or |
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places an artificial limit of 1024 on the number of open files and/or |
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processes. |
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.SH AUTHOR |
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Greg Ward |
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.SH "SEE ALSO" |
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getinfo(1), pfilt(1), psign(1), rpict(1) |
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getinfo(1), pcomb(1), pfilt(1), psign(1), rcrop(1), rpict(1) |
