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Re: simple array math question [message #33701 is a reply to message #33690]

Thu, 16 January 2003 19:47

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

Heinz Stege <reply_to_posting@arcor.de> writes:
> On Thu, 16 Jan 2003 14:05:27 -0600, "Sean Raffuse" <sean@me.wustl.edu>
> wrote:
>
>>>> a=[[1,2,3],[4,5,6],[7,8,9]]
>>
>>>> b=[1,2,3]
>>
>> What is the best (read, fastest) way to multiply b by each individual row of
>> a? I would like to return a result of:
>>
>> [[1,4,9],[4,10,18],[7,14,27]]
>
>
> result=a*b(*,intarr(3))

WOW! I've never seen that! It scares me how cool that is. :-)

Craig

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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		Re: simple array math question By: marc schellens[1] on Sun, 19 January 2003 22:55
		Re: simple array math question By: Jeff Guerber on Fri, 17 January 2003 20:21
		Re: simple array math question By: Heinz Stege on Fri, 17 January 2003 16:51
		Re: simple array math question By: Sean Raffuse on Fri, 17 January 2003 14:10
		Re: simple array math question By: JD Smith on Fri, 17 January 2003 13:46
		Re: simple array math question By: Craig Markwardt on Thu, 16 January 2003 19:47
		Re: simple array math question By: Heinz Stege on Thu, 16 January 2003 16:26
		Re: simple array math question By: Craig Markwardt on Thu, 16 January 2003 13:30
		Re: simple array math question By: Pepijn Kenter on Fri, 24 January 2003 04:43
		Re: simple array math question By: JD Smith on Thu, 23 January 2003 08:53
		Re: simple array math question By: Heinz Stege on Sun, 26 January 2003 11:25
		Re: simple array math question By: Jeff Guerber on Sat, 25 January 2003 01:12

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