Useful little utility
John Williams
Recently I was generating some "thumbnail" type figures in matlab, using
subplot to put a whole bunch of images into one image. In the past I've
complained about subplot making the spacing between individual axes too
large, so I came up with a simple but neat solution, which I offer
freely to anybody else who might like it. Vectorisation is left as an
exercise for the reader :)
Regards,
John
%%%%%%%%%%
function scale_subplots(factor)
% scale_subplots(factor)
%
% Scales each axes object in the current figure by 'factor'
% Useful for trimming the white space created by
% subplot with a large number of sub axes
%
% Operates on the current figure - easily modifed for
% arbitrary figures
%
% Loop through each axis on a figure, and scale it by factor 'f'
% Get handles to all axes in the figure
H_axes = findobj(gcf,'type','axes');
for i=1:length(H_axes);
H=H_axes(i);
% Get the position and size of the axes
pos = get(H,'position');
x=pos(1);y=pos(2);
w=pos(3);h=pos(4);
% Compute the centre of the axes
cx=x+w/2;
cy=y+h/2;
% scale the width and height
w=w*factor;
h=h*factor;
% Compute the new x and y positions for the scaled axes
x=cx-w/2;
y=cy-h/2;
% And update the axes information to
% effect the change
pos=[x y w h];
set(H,'position',pos);
end
