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Re: Question about tutorial in 1D Gaussian Filter

hi Cora,

coraluk@hkpc.org (Cora) wrote in message
> I want to use a 1D Gaussian Filter to fit a curve. After visiting the
> tutorial about 1D Curve fitting in IDL, I still found some problems in
> the function gauss1. Following are the questions:
> 1) What is the return of "size(x)"?
> 2) What is meant by "!dpi"?
> Yours,
> Cora
SIZE returns information (e.g. array size, type, etc.) about the variable
x.  !dpi is a system variable that contains the double precision value of
pi.  for more info., both are described in more detail on the online help.


Johnny Lin
CIRES, University of Colorado
Work Phone:  (303) 735-1636
Web:  http://cires.colorado.edu/~johnny/