% -*- texinfo -*-
% @deftypefn {Function File} {} subplot (@var{rows}, @var{cols}, @var{index})
% @deftypefnx {Function File} {} subplot (@var{rcn})
% Sets the Grace plot in multiplot mode and plots in location
% given by index (there are @var{cols} by @var{rows} subwindows).
%
% Input:
%
% @table @var
% @item rows
% Number of rows in subplot grid.
%
% @item columns
% Number of columns in subplot grid.
%
% @item index
% Index of subplot where to make the next plot.
% @end table
%
% If only one argument is supplied, then it must be a three digit value
% specifying the location in digits 1 (rows) and 2 (columns) and the plot
% index in digit 3.
%
% The plot index runs row-wise. First all the columns in a row are filled
% and then the next row is filled.
%
% For example, a plot with 4 by 2 grid will have plot indices running as
% follows:
% @iftex
% @tex
% \vskip 10pt
% \hfil\vbox{\offinterlineskip\hrule
% \halign{\vrule%&\qquad\hfil%\hfil\qquad\vrule\cr
% height13pt&1&2&3&4\cr height12pt&&\cr\noalign{\hrule}
% height13pt&5&6&7&8\cr height12pt&&\cr\noalign{\hrule}}}
% \hfil
% \vskip 10pt
% @end tex
% @end iftex
% @ifinfo
% @display
% @group
% +-----+-----+-----+-----+
% | 1 | 2 | 3 | 4 |
% +-----+-----+-----+-----+
% | 5 | 6 | 7 | 8 |
% +-----+-----+-----+-----+
% @end group
% @end display
% @end ifinfo
% @end deftypefn