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Re: Unpacking algoritmn [message #39460 is a reply to message #39326]

Mon, 17 May 2004 09:04

tam
Messages: 48
Registered: February 2000

Member

Tmorri wrote:

> Thanks for your replay. I made a little mistake in the statement of the
> problem, what I really need is this:
>
> x1,x2,x3,x4,x5 are variables that can take any value, even zero, (0).
>
> I just want to get rid othe zeroes shown in vector v0
>
> v0=[0 x1 x2 x3 0 x4 x5 x1 0 x2 x3 x4 0 x5 x1 x2 0 x3 x4 x5]
>
> in the following way:
>
> v1=[0 0 0 0 0]
>
> v2=[x1 x2 x3 x4 x5 x1 x2 x3 x4 x5 x1 x2 x3 x4 x5]
>
> Thanks for your help.
>
> Tmorri
>
>
Then something like:

v2 = v0[ (lindgen(n_elements(v0)) mod 4) ne 0]

might do the trick. In practice I'd usually split
it out into a couple of lines.

index = lindgen(n_elements(v0))
v2 = v0[ (index mod 4) ne 0]

Regards,
Tom McGlynn

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[Message index]

		Re: Unpacking algoritmn By: Tmorri on Sat, 15 May 2004 16:03
		Re: Unpacking algoritmn By: David Fanning on Sat, 15 May 2004 09:12
		Re: Unpacking algoritmn By: tam on Mon, 17 May 2004 09:04
		Re: Unpacking algoritmn By: James Kuyper on Mon, 17 May 2004 07:40

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