NAME

       ppmrainbow - Generate a rainbow

SYNOPSIS

       ppmrainbow [-width=number] [-height=number]
       [-tmpdir=directory] [-verbose] color ...

       All  options  can be abbreviated to their shortest unique prefix.  You may use two hyphens instead of one
       to designate an option.  You may use either white space or equals signs between an option  name  and  its
       value.

DESCRIPTION

       ppmrainbow generates a PPM image that fades from one color to another to another from left to right, like
       a rainbow.  The colors are those you specify on the command line, in that  order.   The  first  color  is
       added again on the right end of the image.

       If you want a vertical or other non-horizontal rainbow, run the output through pnmrotate.

       One  use  for  such  a  rainbow is to compose it with another image under an alpha mask in order to add a
       rainbow area to another image.  In fact, you can make rainbow-colored text by using pbmtext, pnmcomp, and
       ppmrainbow.

OPTIONS

       -width number
              The width in pixels of the output image.

              Default is 600.

       -height number
              The height in pixels of the output image.

              Default is 8.

       -tmpdir
              The directory specification of the directory ppmrainbow is to use for temporary files.

              Default is the value of the TMPDIR environment variable, or /tmp if TMPDIR is not set.

       -verbose
              Print  the  "commands"  (invocations  of other Netpbm programs) that ppmrainbow uses to create the
              image.

SEE ALSO

       ppmmake(1), pnmcomp(1), pbmtext(1), ppmfade(1), ppm(5).

AUTHOR

       Arjen Bax wrote ppmrainbow in June 2001 and contributed it to the Netpbm package.  Bryan Henderson  wrote
       this man page in July 2001.

                                                   1 July 2001                                     ppmrainbow(1)