function alt_az(window_handle)
% rotates the figure pointed to by window_handle to coordinates that
% correspond to the relative position of the mouse and the window.
% i.e. in the center, 0 altitude, 0 azimuth. Going up and down 
% changes the altitude, left and right changes the azimuth.

%Eric Soroos
%10-21-95

% wpos = [corner x, corner y, x size, y size]
% pointer pos = [x,y]

w_pos = get(window_handle,'position');
pointer_pos = get(0,'pointerlocation');

rel_location = (((pointer_pos(1:2) - w_pos(1:2))./ w_pos(3:4))-.5).*[360,190];

view(rel_location);