Insert number in structure array

Dear Forum,

I would like to do a loop and change the number in the following array.

app.Channel2EditField_1.Value = minVal_ch2

Here I want to change the value "1" after each loop. For example,

The next loop it will be

app.Channel2EditField_2.Value = minVal_ch2

Then

app.Channel2EditField_3.Value = minVal_ch2

Any help is appreaciated.

[Stephen23]

"Any help is appreaciated."

Don't force pseudo-indices into the fieldnames. Use read indices:

https://www.mathworks.com/help/matlab/matlab_prog/access-multiple-elements-of-a-nonscalar-struct-array.html

Answer 1

[Paul]

Hi Chad,

If possible, consider changing the structure of your data to arrays that can be indexed, instead of field names that contain a character that really seems to be an index.

But if you can't ... then use dynamic field names

minVal_ch2 = 5.3; % example
for ii = 1:3
    app.("Channel2EditField_" + string(ii)).Value = minVal_ch2;
end
app

app = struct with fields:
    Channel2EditField_1: [1×1 struct]
    Channel2EditField_2: [1×1 struct]
    Channel2EditField_3: [1×1 struct]

app.Channel2EditField_2

ans = struct with fields:
    Value: 5.3000

[Chad]

Thank you. This works perfectly.