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Re: Setting values in an array without usings loops [message #35872 is a reply to message #35871]

Fri, 25 July 2003 07:47

Nancy W. Pearson
Messages: 1
Registered: July 2003

Junior Member

Johan Marais wrote:
> I want to create a circle consisting out of ones but without the use of for
> loops. here is how I do it with the loops. Anyone that can help?
>
> r = 33
> mask = intarr(2*r,2*r)
> for m=0,2*r-1 do begin
> for n=0,2*r-1 do begin
> if ((m-r)^2 + (n-r)^2) gt r^2 then mask[m,n] = 1
> endfor
> endfor

IDL> m = shift(dist(2*r),r,r) gt r

TTFN,

David Grier

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[Message index]

		Re: Setting values in an array without usings loops By: R.G. Stockwell on Fri, 25 July 2003 08:35
		Re: Setting values in an array without usings loops By: Johan Marais on Fri, 25 July 2003 08:12
		Re: Setting values in an array without usings loops By: R.G. Stockwell on Fri, 25 July 2003 07:54
		Re: Setting values in an array without usings loops By: Nancy W. Pearson on Fri, 25 July 2003 07:47

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