Normalize by peak area

Hi,

 I want to normalized peaks with different shape and area to the same area (ex:1). 
Is there any already written program?

Thanks

[Geoff Hayes]

Yi-Ting - please provide an example of what you mean, or add more details to your question.

Answer 1

[Naama]

If your data is in vector y, and your desired area is desired_area, then:

y_normalized = desired_area * y./sum(y);