How can I select a specific variable in the .mat file which contains different variables in the user interface?

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Kunpeng Zhang
Kunpeng Zhang 2019-12-5
评论： Kunpeng Zhang 2020-3-14
Hi! I want to design an app which can draw with a .mat file. How can I select a specific variable in the .mat file which contains different variables in the user interface? By 'text area' or something?

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Fangjun Jiang
Fangjun Jiang 2019-12-5
  1. Use load() with return structure.
gongStruct = load('gong.mat');
fieldnames(gongStruct)
  1. Use matfile object.
Help matfile

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Cam Salzberger
Cam Salzberger 2019-12-5
编辑：Cam Salzberger 2019-12-5
Hello Kunpeng,
You may consider using whos to determine the variables available in a MAT file. Then you can specify the variable you want when you call load based on the user selection. This will be faster than loading the entire MAT file into the workspace, unless you expect the user to frequently switch between what they want loaded.
You may also consider checking out the matfile object, as Fangjun suggested.
-Cam
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