Programming a GUI: Function Runs Slowly/Crashes MATLAB

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Matt il 26 Mar 2014

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https://it.mathworks.com/matlabcentral/answers/123122-programming-a-gui-function-runs-slowly-crashes-matlab

Commentato: Chandrasekhar il 26 Mar 2014

Hi,

I am programming a GUI using GUIDE that reads data from a .xls file and then performs an analysis algorithm on the data.

The user should be able to do the following:

-Click on the "browse" button to find the data file. The program will read the data into a global variable and display some of it on a plot on the GUI.

-Click on the "analyze" button to run the data analysis algorithm. The program will read the global variable and run the data analysis and display the data on a second plot on the GUI.

The problem is that the data analysis algorithm seems to either crash MATLAB or execute very slowly. The raw data file is a 20000x10 array, and will crash MATLAB whenever I try to run the algorithm through the GUI. I have reduced the data file to a 4000x10 array and the algorithm does eventually complete when executed through the GUI, although it still takes much longer than it should.

I have run the exact same data analysis algorithm through the workspace with the full 20000x10 array and the function executes in a reasonable amount of time. I can't seem to figure out why the function crashes MATLAB or runs so much slower when executing through the GUI. I've attached the .m file for my GUI for reference. I am using MATLAB R2009b on my intel-based Macbook Pro, if that helps.

Thanks,

Matt