MATLAB: How to pass the image from m-file to GUI push button callback

passing image from mfile to gui

hi, i am developing GUI for filter program. In my GUI i used 3 push button an 2 axes. When i press the button1 error image will display on the axes1, when i press the button2 my "filter.m" file will run. After completion my "filter.m" provide me output image in some variable called 'y'. I want to take this image i.e 'y' from "filter.m" file to GUI pushbutton3 callback, so that when i press pushbutton3 i want to display the image y on the axes2. how to do this? i mean what code i should add to "filter.m file" and to GUI pushbutton3 callback program to display the image on axes2?(i have already done coding for push button1 and 2).

Best Answer

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

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MATLAB: Reset GUI M-File

Delete the associated .m file and reopen the GUI in GUIDE. In GUIDE, open Tools > GUI options... check "Generate FIG file and MATLAB file" and save the GUI.

MATLAB: M-file function

Your function is calling itself without approaching any convergance or something that will allow it to end. Therefore it will run forever and eventually out of memory (hence the error). Try splitting it up into a script and a function as so:

Script:

 %creating window of plot from -5 to 50 using stepsize 0.25 for t x-axis
 %t should be on the x axis, v should be on the y axis
 k=0; 
for i= -5:.25:50
    k = k+1;
    t(k)=i;
    v(k)=vPieceWise(t(k));
end 
plot(t,v);
 
figure
plot(t,v);
hold on

Function:

%Part A: Mfile function to compute v as a function of t
function v = vPieceWise(t)
 if (t < 0)
        v = 0;
    elseif (0 <= t)&&(8<=16)
        v = -5*t+10*t.^2;
    elseif (8<=16)&&(t<=16)
        v = 624 - 3*t;
    elseif (t<=16)&&(t<=26)
        v = 12*(t-16).^2+36*t;
    elseif (26<t)
        v = 2136*exp(-0.1*(t-26));
 end

Best Answer

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MATLAB: M-file function

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