.TH HIST 9.1
.SH NAME
hist \- pixel value histogram
.SH SYNOPSIS
.B fb/hist
[
.I file
]
.SH DESCRIPTION
.I Hist
reads a picture file and outputs 256 lines, each containing one number for each
of the picture's channels.
Line
.I n
indicates how many of the picture's pixels have pixel value
.IR n -1
in each of its channels.
.SH SOURCE
.B /sys/src/fb/hist.c
.SH "SEE ALSO
.IR picfile (9.6)