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Optimization Question: Sum at each element of array [message #75105]

Mon, 14 February 2011 21:58

Charles Steinhardt
Messages: 1
Registered: February 2011

Junior Member

Hello,

I'm trying to optimize the following:

for i=0, 100 do begin
y = y + myfunc(x, x + sigma * (i-50)/10.0, P[2]*myfunc2(x + sigma
* (i-50)/10.0), sigma)
endfor

Here, x, y, and sigma are arrays of the same cardinality. I know the
for loop is slow in IDL compared to array operations, but I'm having
problems finding a faster way to do this. Is it really faster to make
an array of findgen(101) and then do some sort of summation over
that?

I'm hoping somebody has run into this before - I'd appreciate any
advice you have!

Thank you,

-Charles

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Optimization Question: Sum at each element of array

By: Charles Steinhardt on Mon, 14 February 2011 21:58

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