HISTOGRAM(8) HISTOGRAM(8)
NAME
histogram - draw a histogram
SYNOPSIS
histogram [ -h ] [ -c index ] [ -r minx,miny,maxx,maxy ] [
-s scale ] [ -t title ] [ -v maxv ]
DESCRIPTION
Histogram reads numbers, one per line, from its standard
input and draws them as bars in a histogram.
Use -c to set the color index for the graph. A modulus
operation on the value keeps the color index within the
available range.
Unless -h (hold) is given, histogram will exit when it
reaches the end-of-file. It will exit immediately if it is
interrupted or if the exit menu option is chosen.
-r sets the initial window rectangle coordinates.
-s sets the scaling factor.
-t sets the title displayed on a line above the histogram.
The last value read is displayed to the right of the title.
-v sets the maximum value that can be expected.
EXAMPLE
Plot a sine wave:
hoc -e 'for(i=0.0;i<20*PI;i=i+0.1) print (10+10*sin(i)), "\n"'|
histogram -t 'sin(t), 0 ≤ t ≤ 20π' -v 20 -h
Show the Dow Jones adjusted daily closing price back to Jan-
uary 1, 2000:
site=http://ichart.finance.yahoo.com
hget $site'/table.csv?s=^DJI&a=00&b=1&c=2000' |
awk -F, '{print $NF}' | histogram -t DJI -v 15000 -h
SOURCE
/sys/src/cmd/histogram.c
SEE ALSO
statusbar(8)
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