KDATA_MEAN_ADD(3)

NAME
kdata_mean_attach - attach source for mean data plotting

LIBRARY
libkplot

SYNOPSIS
#include <cairo.h>
#include <kplot.h>
int
kdata_mean_attach(struct kdata *dst, struct kdata *source);

DESCRIPTION
The kdata_mean_attach function attaches a data source source to a mean data source dst allocated with kdata_mean_alloc(3). The internal buffers will be increased, if necessary, to the size of the new buffer. If the buffer is increased, the mean values of the new buckets are set to zero. The x-values of the new pairs are set to the new source's x-values.

Passing NULL as source will simply return.

RETURN VALUES
kdata_mean_attach returns 0 if memory allocation failed or if dst was not allocated with kdata_mean_alloc(3).

SEE ALSO
kdata_mean_alloc(3), kplot(3) Donald E. Knuth, The Art of Computer Programming: Seminumerical Algorithms, 3rd Edition, Boston, 1998, Addison-Wesley, 232, Volume 2.

CAVEATS
If you attach multiple sources with different x-values, the mean x-values will be inconsistent.