MATLAB: How to load a function in AppDesigner

app designerloadmatlab function

I am a beginner to appdesigner and i am trying to design my matlab code to load some data which is

load([PTH '/Data.mat']);

the warning I am receiving is "To avoid conflicts with functions on the path, specify variables to load from file." How can I remove thes warning.

Best Answer

Seems to me that the warning is warning you against loading data into the workspace without controlling the variable names. Try to use an output variable so that the data is returned as a struct into that variable instead:

data = load([PTH '/Data.mat']);
% and while your at it, also use fullfile
% instead of concating, to make your code
% work on other platforms as well
data = load(fullfile(PTH, 'Data.mat'));

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MATLAB: Dot indexing is not supported for variables of this type+ App designer

Usually when I unexpectedly get that error message it is because the object is empty. Are you sure there are folders that match your criteria. Otherwise maybe app.sFOLDERS is empty. You can explicitly check using the isempty function

Also, maybe I didn't read your code carefully enough but in that first line

app.idx = listdlg('ListString', {sFOLDERS(:).name}, 'SelectionMode', 'single', ...
     'ListSize', [160,90]*4);

should that be app.sFOLDERS(:).name, rather than just sFOLDERS(:)?

By the way, you can format your code nicely in your question by using the code button in the Answers toolbar

MATLAB: How can i make browse button

You've got two problems.

First, matlab can't find your file. To solve that, you either need to add the full path to your file name or you need to add the folder to your search path.

To add the path:

[filenameS1,pathS1]=uigetfile(...)
addpath(pathS1)

or to load the file with the full path

load(fullfile(pathS1, filenameS1));

Your second (potential) problem is that you're trying to load a txt file using load() which is for mat files. If your TXT file is an ASCII file then this isn't a problem.

help load
 load Load data from MAT-file into workspace.
    S = load(FILENAME) loads the variables from a MAT-file into a structure
    array, or data from an ASCII file into a double-precision array.

Best Answer

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MATLAB: Dot indexing is not supported for variables of this type+ App designer

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