% -*- texinfo -*-
% @deftypefn {Function File} normplot (@var{X})
%
% Produce a normal probability plot for each column of X.
%
% The line joing the 1st and 3rd quantile is drawn on the
% graph. If the underlying distribution is normal, the
% points will cluster around this line.
%
% Note that this function sets the title, xlabel, ylabel,
% axis, grid, tics and hold properties of the graph. These
% need to be cleared before subsequent graphs using 'clf'.
% @end deftypefn