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distr, target, bins, values
distr(bins, values [, /ignorelimit, /increaselimit])
Distributes the values over the corresponding
bins. The function returns an array containing the
gathered totals in bins 0 through max(values), unless some
of the bin numbers in bins are negative, in which case the
first element contains the data for the most negative bin. If
values contains only 1s, then distr(bins,values) equals
hist(bins). The subroutine adds the values to the proper bins of
target.
The function form does not allow a value range over !maxhistsize
(measured from the most negative value or zero to the maximum value),
unless one of the keywords is specified. /ignorelimit just
ignores the value of !maxhistsize, and /increaselimit
increases its value to accomodate the current (possibly very large!)
range of values.
See also: hist, !maxhistsize