I have a struct array that is 15X1000X1000
With what fields?
There are random NaN's scattered throughout the data in this struct
In any of the fields? Are the fields scalar? arrays (if so what size)?
but the if cannot handle the NaN
if doesn't care one bit about what's in the data, NaN or not. The problem is probably that you don't know how to handle NaN properly.
In any case, it's very unlikely you need loops or if statements.
To know for sure, answer the questions above or better, attach you structure in a mat file.
