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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 January 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)

								  HISTOGRAM(8)

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