1PLHIST(3plplot)                   PLplot API                   PLHIST(3plplot)
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NAME

6       plhist - Plot a histogram from unbinned data
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SYNOPSIS

9       plhist(n, data, datmin, datmax, nbin, opt)
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DESCRIPTION

12       Plots  a  histogram  from n data points stored in the array data.  This
13       routine bins the data into nbin bins equally spaced between datmin  and
14       datmax,  and  calls  plbin(3plplot)  to  draw  the resulting histogram.
15       Parameter opt allows, among other things, the histogram  either  to  be
16       plotted  in  an  existing  window  or  causes  plhist(3plplot)  to call
17       plenv(3plplot) with suitable limits before plotting the histogram.
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19       Redacted form: plhist(data, datmin, datmax, nbin, opt)
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21       This function is used in example 5.
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ARGUMENTS

24       n (PLINT, input)
25              Number of data points.
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27       data (PLFLT *, input)
28              Pointer to array with values of the n data points.
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30       datmin (PLFLT, input)
31              Left-hand edge of lowest-valued bin.
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33       datmax (PLFLT, input)
34              Right-hand edge of highest-valued bin.
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36       nbin (PLINT, input)
37              Number of (equal-sized) bins into which to divide  the  interval
38              xmin to xmax.
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40       opt (PLINT, input)
41              Is a combination of several flags: opt=PL_HIST_DEFAULT: The axes
42              are automatically rescaled to fit the histogram data, the  outer
43              bins are expanded to fill up the entire x-axis, data outside the
44              given extremes are assigned to the outer bins and bins  of  zero
45              height  are simply drawn.  opt=PL_HIST_NOSCALING|...: The exist‐
46              ing axes are not rescaled to fit  the  histogram  data,  without
47              this  flag,  plenv(3plplot)  is  called to set the world coordi‐
48              nates.  opt=PL_HIST_IGNORE_OUTLIERS|...: Data outside the  given
49              extremes are not taken into account. This option should probably
50              be combined with opt=PL_HIST_NOEXPAND|...,  so  as  to  properly
51              present  the data.  opt=PL_HIST_NOEXPAND|...: The outer bins are
52              drawn    with    equal    size    as    the     ones     inside.
53              opt=PL_HIST_NOEMPTY|...:  Bins  with  zero  height are not drawn
54              (there is a gap for such bins).
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AUTHORS

59       Geoffrey Furnish and Maurice LeBrun wrote and  maintain  PLplot.   This
60       man  page  was  automatically  generated from the DocBook source of the
61       PLplot  documentation,  maintained  by  Alan  W.   Irwin   and   Rafael
62       Laboissiere.
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SEE ALSO

65       PLplot documentation at http://plplot.sourceforge.net/resources.
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69                                  July, 2010                   PLHIST(3plplot)
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