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Re: Help: how to do ? [message #15281 is a reply to message #15269]

Tue, 04 May 1999 00:00

Pavel Romashkin
Messages: 166
Registered: April 1999

Senior Member

Tri VU KHAC wrote:

> Hi folks,
>
> Having 2 arrays:
> + 3x1 : A1 = findgen(1, 3)
> + 3xN: A2= findgen(N, 3)
>
> No I need to do sth like:
>
> for i=1, N do A[i,*] = A2[i,*] + A1
>
> How to avoid FOR-DO here ?

a1 = [[a1], fltarr(n-1, 3)]
a = a2+a1

I clocked the (100x1000) array. This method is 10 times faster than a
loop.
Cheers,
Pavel

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[Message index]

		Re: Help: how to do ? By: eddie haskell on Tue, 04 May 1999 00:00
		Re: Help: how to do ? By: Pavel Romashkin on Tue, 04 May 1999 00:00
		Re: Help: how to do ? By: VU KHAC Tri on Tue, 04 May 1999 00:00
		Re: Help: how to do ? By: Robert S. Hill on Tue, 04 May 1999 00:00
		Re: Help: how to do ? By: Pavel Romashkin on Tue, 04 May 1999 00:00
		Re: Help: how to do ? By: Pavel Romashkin on Tue, 04 May 1999 00:00
		Re: Help: how to do ? By: Pavel Romashkin on Tue, 04 May 1999 00:00

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