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im_hist - create a displayable histogram from an image
#include
<vips/vips.h>
int im_hist( in, plotofhist, bandno )
IMAGE *in, *plotofhist;
int bandno;
im_hist() creates a displayable histogram file for
the image held by the image descriptor in. The created displayable histogram
is held in the IMAGE descriptor plotofhist. If bandno == -1 a displayable
histogram of all input bands is created else the histogram of bandno only
is created.
See im_histplot(3)
for rules on the size and scaling og the
result.
All functions returns 0 on success and -1 on error.
im_histgr(3)
,
im_histplot(3)
.
N. Dessipris
N. Dessipris - 10/05/1991
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