%GRIDSIZE Set gridsize used in the plot commands%%     O = GRIDSIZE(N)%% INPUT%     N  New grid size (optional, default: display current gridsize)% % OUTPUT%     O  New grid size (optional)%		% DESCRIPTION% The initial gridsize is 30, enabling fast plotting. This is, however,% insufficient to obtain accurate graphs, for which a gridsize of at least % 100 and preferably 250 is needed. Default: display or return the current % gridsize.%% EXAMPLES% See PREX_CONFMAT%% SEE ALSO% PLOTC, PLOTM% Copyright: R.P.W. Duin, duin@ph.tn.tudelft.nl% Faculty of Applied Sciences, Delft University of Technology% P.O. Box 5046, 2600 GA Delft, The Netherlands% $Id: gridsize.m,v 1.5 2003/12/04 10:12:48 bob Exp $function out = gridsize(n)	prtrace(mfilename);	global GRIDSIZE;	% If the global variable was not yet initialised, set it to 30 (default).	if (isempty(GRIDSIZE))		prwarning(4,'initialising gridsize to 30');		GRIDSIZE = 30;				end	if (nargin < 1)		if (nargout == 0)			disp(['Gridsize is ' num2str(GRIDSIZE) ]);		end	else		if isstr(n)			n= str2num(n);		end		if isempty(n)			error('Illegal gridsize')		end		GRIDSIZE = n;	end	if (nargout > 0), out = GRIDSIZE; endreturn