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do I need this IF statement? [message #43247]

Thu, 24 March 2005 02:07

Margrethe
Messages: 4
Registered: March 2005

Junior Member

I find that in some cases I really need an IF statement to make sure
that I don't address some arrays with index -1. In the example below I
have vectorized the inner loop over j, but have kept the loop over i.
Is there a way to avoid the IF statement? Grateful for help! -Margrethe

FOR i=0,N-1 DO BEGIN

d = sqrt ( x(i) ^2 + y (INDGEN(N)) ^2 )
indx = WHERE ( d LT 3.*sigma, ct )

IF (ct GT 0) THEN BEGIN

v = v1 + vr (i,indx)
p = some_function ( x(i), y(indx) )
profile = profile + TOTAL ( p * image(i,indx) )

ENDIF

ENDFOR

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[Message index]

		do I need this IF statement? By: Margrethe on Thu, 24 March 2005 02:07
		Re: do I need this IF statement? By: R.Bauer on Fri, 25 March 2005 16:25

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