#!/bin/csh -f
#
# ppmsmooth - smooth out an image by replacing each pixel with the
#             average of its nine immediate neighbors

set tmp=/tmp/ppmsm$$
rm -f $tmp

cat > $tmp << 'MOO'
P2
3 3
18
10 10 10
10 10 10
10 10 10
'MOO'

ppmconvol $tmp $*

rm -f $tmp