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Re: dimensional headache [message #43299]

Wed, 06 April 2005 00:46

Andrew[2]
Messages: 7
Registered: February 2005

Junior Member

Hi again,

please ignore both of the previous posts by me. They dont work, DIST
was completly wrong. Dont know what I was thinking. Sorry. But you can
reduce what you do in the loops. For example the code below (and I made
sure this worked properly) runs in 16 milliseconds (pretty quick). Then
you can still do the rest of the code that I had before, or
alternatively your own code from your WhereToMulti statement.

t1=systime(/seconds)
d=findgen(160,160)
xgrid=findgen(160)
ygrid=findgen(160)

;i just assumed a central position here
xmod=79
ymod=79

dx=(xmod-xgrid)^2
dy=(ymod-ygrid)^2

for i=0,159 do for j=0,159 do d[i,j]=SQRT(dx[i]+dy[j])
t2=systime(/seconds)
print,t2-t1

Sorry about the dud answers before. I hope this one helps a bit even if
it didnt get rid of the loops.

Cheers
Andrew

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[Message index]

		Re: dimensional headache By: Andrew[2] on Wed, 06 April 2005 00:46
		Re: dimensional headache By: Andrew[2] on Wed, 06 April 2005 00:01
		Re: dimensional headache By: Andrew[2] on Tue, 05 April 2005 23:57
		Re: dimensional headache By: Margrethe on Sat, 02 April 2005 09:17
		Re: dimensional headache By: Kenneth P. Bowman on Fri, 01 April 2005 16:10

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