Re: How do you get rid of for-loops with arrays

["J.D. Smith" <jdsmith(at)astro.cornell.edu>]

Karri Kaksonen wrote:
> 
> I have tried to understand how to use the arrays in IDL but
> there is still tons of techniques that I don't know...
> 
> Is it possible to do this without for-loops?
> 
> a = [[1,2,3],[4,5,6]]
> b = [2,2,3]
> 
> for i=0,1 do a[*,i] = a[*,i] * b

a=a*rebin(b,3,2,/samp)

Redimensioning arrays in calculations is so important, it's in the FAQ:
http://www.ivsoftware.com:8000/FAQ/FMPro?-db=idl%5ffaq.fp3&-format=record%5fdetail.htm&-lay=entry%20layout&-max=2147483647&-recid=36&-findall=

JD

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