get dimension sizes

Hi Sir/Madam,

I'm looking for a function returning the dimension size for a given
dimension specified via dimension name.

Say, I know there is a dimension called "time" in file f, so a
function(f, "time") will return the size of dimension "time".

I browsed the functions on NCL website, and it seems that all relevant
functions are returning the dimension sizes of all dimensions for
either a file or a var.

Is there any function doing what I'm looking for?

Thanks.
Yaosheng
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Received on Sun Jan 16 11:03:46 2011