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Re: SMOOTH or TS_SMOOTH [message #82179 is a reply to message #82100]

Wed, 21 November 2012 06:28

lecacheux.alain
Messages: 325
Registered: January 2008

Senior Member

Le mercredi 21 novembre 2012 14:09:46 UTC+1, mark...@gmail.com a écrit :
> Typing code too quick....corrected version
>
>
>
> X = 50
>
> N = 3
>
> arrayData = dindgen(X)
>
> arrayBackwardMovingMean = dblarr(X)
>
> for i = 0, X - 1 do arrayBackwardMovingMean[i] = mean(arrayData[min([0, i - N] : i)])

A more "IDL" way (untested) might be :

pad = !Values.F_NAN + dindgen(N)
print, mean(reform([pad,reform(rebin([arrayData,pad],X+N,N),(X*N)*N )],X+N+1,N),DIM=2,/NAN)

or, more explicitely:

print,mean( $
reform( $
[pad,reform(rebin([arrayData,pad],X+N,N),(X*N)*N)] $ ;replicate and pad your array N times
,X+N+1,N), $ ;do the shift
DIM=2, $ ;do the average
/NAN) ;handle the bounds

alx.

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[Message index]

		SMOOTH or TS_SMOOTH By: markjamie on Tue, 20 November 2012 15:36
		Re: SMOOTH or TS_SMOOTH By: lecacheux.alain on Wed, 21 November 2012 06:28
		Re: SMOOTH or TS_SMOOTH By: markjamie on Wed, 21 November 2012 05:09
		Re: SMOOTH or TS_SMOOTH By: markjamie on Wed, 21 November 2012 05:01
		Re: SMOOTH or TS_SMOOTH By: lecacheux.alain on Wed, 21 November 2012 02:38

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