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KDATA_BUCKET_ALLOC(3) |
Library Functions Manual |
KDATA_BUCKET_ALLOC(3) |
NAME
kdata_bucket_alloc — allocate bucket data for plotting
LIBRARY
library “libkplot”
SYNOPSIS
#include <cairo.h>
#include <kplot.h>
struct kdata *
kdata_bucket_alloc(
size_t rmin,
size_t rmax);
DESCRIPTION
The
kdata_bucket_alloc function creates a reference-counted data sources for
kplot(3), initially with x-values set to the pair index starting at
rmin and y-values to zero. It is similar to
kdata_array_alloc(3) except it uses a bucket data model: each integer within the range
rmin (inclusive) to
rmax (non-inclusive) corresponds to a specific bucket. Bucket values are modified with
kdata_bucket_add(3) and
kdata_bucket_set(3).
RETURN VALUES
kdata_bucket_alloc returns NULL if memory allocation failed.