pnmenlarge - read a portable anymap and enlarge it N times
pnmenlarge N [''pnmfile''?
Reads a portable anymap as input. Replicates its pixels
N times, and produces a portable anymap as
pnmenlarge can only enlarge by integer factors. The
slower but more general pnmscale can enlarge or
reduce by arbitrary factors, and pbmreduce can reduce
by integer factors, but only for bitmaps.
If you enlarge by a factor of 3 or more, you should probably
add a pnmsmooth step; otherwise, you can see the
original pixels in the resulting image.
pbmreduce(1), pnmscale(1), pnmsmooth(1), pnm(5)
Copyright (C) 1989 by Jef Poskanzer.