I have an expression error in my code

[Torsten]

Do you think it's fair to edit away the question after it has been solved ?

Worse: you did not even accept the correct answer that has been given.

[Rik]

I recovered the removed content from the Google cache (something which anyone can do). Editing away your question is very rude. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer.

Answer 1

[Voss]

Use single quotes instead of double quotes around omitnan, as in:

cc=sum(bb,'omitnan');