% -*- texinfo -*-
% @deftypefn {Function File} {@var{table} =} tabulate (@var{data}, @var{edges})
%
% Compute a frequency table.
%
% For vector data, the function counts the number of
% values in data that fall between the elements in the edges vector
% (which must contain monotonically non-decreasing values). @var{table} is a
% matrix.
% The first column of @var{table} is the number of bin, the second
% is the number of instances in each class (absolute frequency). The
% third column contains the percentage of each value (relative
% frequency) and the fourth column contains the cumulative frequency.
%
% If @var{edges} is missed the width of each class is unitary, if @var{edges}
% is a scalar then represent the number of classes, or you can define the
% width of each bin.
% @var{table}(@var{k}, 2) will count the value @var{data} (@var{i}) if
% @var{edges} (@var{k}) <= @var{data} (@var{i}) < @var{edges} (@var{k}+1).
% The last bin will count the value of @var{data} (@var{i}) if
% @var{edges}(@var{k}) <= @var{data} (@var{i}) <= @var{edges} (@var{k}+1).
% Values outside the values in @var{edges} are not counted. Use -inf and inf
% in @var{edges} to include all values.
% Tabulate with no output arguments returns a formatted table in the
% command window.
%
% Example
%
% @example
% sphere_radius = [1:0.05:2.5];
% tabulate (sphere_radius)
% @end example
%
% Tabulate returns 2 bins, the first contains the sphere with radius
% between 1 and 2 mm excluded, and the second one contains the sphere with
% radius between 2 and 3 mm.
%
% @example
% tabulate (sphere_radius, 10)
% @end example
%
% Tabulate returns ten bins.
%
% @example
% tabulate (sphere_radius, [1, 1.5, 2, 2.5])
% @end example
%
% Tabulate returns three bins, the first contains the sphere with radius
% between 1 and 1.5 mm excluded, the second one contains the sphere with
% radius between 1.5 and 2 mm excluded, and the third contains the sphere with
% radius between 2 and 2.5 mm.
%
% @example
% bar (table (:, 1), table (:, 2))
% @end example
%
% draw histogram.
%
% @seealso{bar, pareto}
% @end deftypefn