plhist
( | n, |
| data, | |
| datmin, | |
| datmax, | |
| nbin, | |
opt); |
Plots a histogram from
data points stored in the
n vector. This routine bins
the data into data bins
equally spaced between
nbin and
datmin, and calls datmaxplbin
to draw the resulting histogram. Parameter
allows, among
other things, the histogram either to be plotted in an existing window
or causes optplhist to call plenv with suitable limits before plotting
the histogram.
n
(PLINT, input)
Number of data points.
data
(PLFLT_VECTOR, input)
A vector containing the values of the
data points.
n
datmin
(PLFLT, input)
Left-hand edge of lowest-valued bin.
datmax
(PLFLT, input)
Right-hand edge of highest-valued bin.
nbin
(PLINT, input)
Number of (equal-sized) bins into which to divide the interval
to
xmin.
xmax
opt
(PLINT, input)
Is a combination of several flags:
:
The axes are automatically rescaled to fit the histogram data,
the outer bins are expanded to fill up the entire x-axis,
data outside the given extremes are assigned to the outer
bins and bins of zero height are simply drawn.
opt=PL_HIST_DEFAULT
:
The existing axes are not rescaled to fit the histogram data,
without this flag, opt=PL_HIST_NOSCALING|...plenv is called to set the world coordinates.
:
Data outside the given extremes are not taken into account.
This option should probably be combined with
opt=PL_HIST_IGNORE_OUTLIERS|...,
so as to properly present the data.
opt=PL_HIST_NOEXPAND|...
:
The outer bins are drawn with equal size as the ones inside.
opt=PL_HIST_NOEXPAND|...
:
Bins with zero height are not drawn (there is a gap for
such bins).
opt=PL_HIST_NOEMPTY|...
Redacted form: plhist(data, datmin, datmax, nbin, opt)
This function is used in example 5.