How do i make a 'pushbutton' plot a point?

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Jack
Jack 2014-7-11
回答： Image Analyst 2014-7-12
%code
hbottom_left = uicontrol('Style','pushbutton',...
'String','Bottom Left','Position',[270,220,70,25]);
%end of code
I want this pushbutton to plot the point (0.5,0.5), i think i need to use the callback function but i dont know the exact code, could someone provide the exact code, thanks in advance.

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Image Analyst
Image Analyst 2014-7-12
Why not use GUIDE? http://blogs.mathworks.com/videos/category/gui-or-guide/
Just right click on the button and say to view the callback. It will put you in the callback in the m-file. Then just write:
plot(0.5, 0.5, 'b*', 'MarkerSize', 15, 'LineWidth', 3); % Adjust as needed.
grid on;

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