**CIGAL Reference Manual, Chapter 2 (Commands): HISTOGRAM**
===== HISTOGRAM -- Draw a histogram (or smooth curve) of a data array =====
**usage: histo yvarb [key intens errs storflg binwid xoff xscal yoff yscal]**

The HISTOGRAM command generates a graphical display of the values in
an array (specified by the first argument).  The display is drawn on the
current graphics device (see [[jvs:cigal:manual:chapter1:graphics|GRAPHICS(1)]], [[biac:jvs:cigal:manual:chapter2:initialize|INITIALIZE(2)]], [[biac:jvs:cigal:manual:chapter4:unit|UNIT(4)]],
[[jvs:cigal:manual:chapter4:gunit|GUNIT(4)]]).  The nature of the display is specified by the remaining
arguments:
       KEY          - Type of display (combine by addition):
                      0: open bars
                      1: solid bars
       INTENS       - Intensity (color) value to use for the output.
       XSCAL, YSCAL - Scale factors for X and Y axes (default 1,1).
       XOFF, YOFF   - X and Y offsets for the origin of the display
                      (default 0,0).  Offset is added after scaling.
       WID          - Width (1-15) of lines drawn in the display.
       ZVAL         - Z value to use for each point (default 0)
       OMEM         - Memory variable in which to draw display.  The default
                      is the current display memory.
       STORFLG      - Save histogram vectors; default (0) is to display only.

**See Also:**\\
[[jvs:cigal:manual:chapter1:graphics|GRAPHICS(1)]], 
[[jvs:cigal:manual:chapter4:gunit|GUNIT(4)]], 
[[jvs:cigal:manual:chapter2:initialize|INITIALIZE(2)]], 
[[jvs:cigal:manual:chapter4:unit|UNIT(4)]]

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