


PLBIN(3)                    PLplot API                   PLBIN(3)


NAME
       plbin - Plot a histogram from binned data

SYNOPSIS
       plbin(nbin, x, y, opt)

DESCRIPTION
       Plots  a  histogram consisting of nbin bins.  The value associated with
       the i'th bin is placed in x[i], and the number of points in the bin  is
       placed  in  y[i].  For proper operation, the values in x[i] must form a
       strictly increasing sequence.  By default, x[i] is the  left-hand  edge
       of  the i'th bin. If opt=PL_BIN_CENTRED is used, the bin boundaries are
       placed midway between the values in the x array.   Also  see  plhist(3)
       for drawing histograms from unbinned data.

       Redacted  form:   General: plbin(x, y, opt) Perl/PDL: plbin(nbin, x, y,
       opt) Python: plbin(nbin, x, y, opt)


       This function is not used in any examples.

ARGUMENTS
       nbin (PLINT, input)
              Number of bins (i.e., number of values in x and y arrays.)

       x (PLFLT *, input)
              Pointer to array containing values associated with bins.   These
              must form a strictly increasing sequence.

       y (PLFLT *, input)
              Pointer  to array containing number of points in bin.  This is a
              PLFLT (instead of PLINT) array so  as  to  allow  histograms  of
              probabilities, etc.

       opt (PLINT, input)
              Is  a  combination  of  several flags: opt=PL_BIN_DEFAULT: The x
              represent the lower bin boundaries, the outer bins are  expanded
              to  fill up the entire x-axis and bins of zero height are simply
              drawn.  opt=PL_BIN_CENTRED|...: The bin  boundaries  are  to  be
              midway  between  the  x  values.  If the values in x are equally
              spaced,  the  values  are  the  center  values  of   the   bins.
              opt=PL_BIN_NOEXPAND|...:  The  outer  bins  are drawn with equal
              size as the ones inside.  opt=PL_BIN_NOEMPTY|...: Bins with zero
              height are not drawn (there is a gap for such bins).



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





                          November, 2007                        1





PLBIN(3)                    PLplot API                   PLBIN(3)


SEE ALSO
       PLplot documentation at http://plplot.sourceforge.net/resources.























































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