Warning Message "unable to write to Excel format"

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Rita Sciuto
Rita Sciuto 2019-7-3
评论： Walter Roberson 2020-2-8
I'm solving a problem with variational inequality. I have a code but after 6 iteractions Matlab blocks and gives me this Warning:
Unable to write to Excel format, attempting to write file to csv format. To write to an
Excel file, convert your data to a table and use writetable.
What's the meaning?

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回答（1 个）

Jiajia
Jiajia 2020-2-8
I have encountered a similar problem. How can I sove it?
  1 个评论
Walter Roberson
Walter Roberson 2020-2-8
If you have a new enough version of MATLAB, change all of your calls to xlswrite() to be calls to writetable() or writematrix() or writecell(), passing in the 'UseExcel', false option. Also, change any xlsread() to readtable() or readmatrix() or readcell() with 'UseExcel', false . This will prevent Excel from being invoked to read of write the excel file.
Avoiding Excel can be important because historically the connection with Excel can sometimes get stuck with a file open as far as Excel is concerned, and then the file is busy when you go to write it. Sometimes this can occur if you do two xlswrite() to the same file in quick succession, as Excel does not necessarily finish flushing the file and closing it before it returns from the ActiveX connection that xlsread() and xlswrite() use on MS Windows machines with Excel installed.

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