How do I write an excel file?

I am trying to write the folowing excel file but get this error message and I don't know why.

See attached screen shot.

Thank you in advance for your help!

Answer 1

[Walter Roberson]

You are using Mac or Linux. xlswrite() on Mac and Linux can only write pure numeric data.

You should follow the suggestion in the image: convert your data to table and writetable()

If you have R2019a or later then you have additional options such as writecell()

Answer 2

[Seba.V]

Thank you I didn't know that it wouldn't work on Mac.

how can I convert the data into a table?