Performance of graphics (stand-alone)

I have created an application with a lot of graphics and it works flawlessly in the matlab environment. However, when i compile it and run it the performance is not good at all. It seems like it cannot update the screen as fequently as in the Matlab environment. I have for example a function that draws a line from a point selected by a first mouse click, after that a line is drawn from this start point to the position of the mouse. When I move the mouse in the matlab environment one end of the line is completely "stuck" to the pointer no matter how fast I move it. In the stand-alone version. It doesn't follow nearly as smoothly. Any idea how to fix it or is the performance in stand-alone applications that much worse in performance?

[Kaustubha Govind]

I'm not familiar with this issue, but it might help if you can post code snippets of how you achieve the drawing - this will help us narrow down the issue to specific MATLAB functions/toolboxes. Also, please specify the development/target platforms.

[Niclas]

You can use the following function after creating an axes with the "motionfcn" set to "drawLine"... In Matlab environment it works pefectly, but as stand-alone it is very slow!

function drawLine

%--- Choose alternative (1-erase/redraw 2-update coordinates)

alt=1;

%--- Get current pointer position ---%

coords=get(gca,'CurrentPoint');

%--- Check if a line exist and get handle

h=findobj(gcf,'Type','Line');

if alt==1

delete(h)

plot([0 coords(1,1)],[0 coords(1,2)]);

else

if isempty(h)

plot([0 coords(1,1)],[0 coords(1,2)]);

else

set(h,'XData',[0 coords(1,1)],'YData',[0 coords(1,2)]);

end

end

[Niclas]

You can also try to compile the example "window_motion_fcn". It gives the same result...

[Kaustubha Govind]

Please consider contacting Tech support (http://www.mathworks.com/matlabcentral/answers/2495-when-shall-i-contact-mathworks-technical-support-and-how) if you do not receive a reply from the user community.