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Histeps
The histeps style is only relevant to 2-d plotting. It is intended for
plotting histograms. Y-values are assumed to be centered at the x-values;
the point at x1 is represented as a horizontal line from ((x0+x1)/2,y1) to
((x1+x2)/2,y1). The lines representing the end points are extended so that
the step is centered on at x. Adjacent points are connected by a vertical
line at their average x, that is, from ((x1+x2)/2,y1) to ((x1+x2)/2,y2).
If autoscale is in effect, it selects the xrange from the data rather than
the steps, so the end points will appear only half as wide as the others.
See also
http://www.gnuplot.info/demo/steps.htmlsteps demo.
histeps is only a plotting style; gnuplot does not have the ability to
create bins and determine their population from some data set.
Ethan Merritt
2007-03-03