excel worksheet could not be activated with xlswrite in matlab

This error can occur when the workbook being accessed in MATLAB is already open by another program or is write-protected.

One solution is to ensure that the workbook is not currently open in any other program. If the workbook is open, close it in the other program before running xlswrite in MATLAB.

Another possible solution is to check if the workbook is write-protected. To do this, right-click on the file in Windows Explorer and select "Properties". Under the "General" tab, check if the "Read-only" option is checked. If it is, uncheck it and click "OK".

If neither of the above solutions work, you can try using the xlsopen command to open the workbook before using xlswrite. This may circumvent any issues with the workbook being open or write-protected.

main.m
[~, ~, raw] = xlsread('filename.xlsx'); %open workbook
raw{1,1} = 'new data'; %example of updating cell data
xlswrite('filename.xlsx', raw); %write updated data back to workbook
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