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Re: Matrix multiplication [message #36932 is a reply to message #911]

Fri, 14 November 2003 09:48

Haje Korth
Messages: 651
Registered: May 1997

Senior Member

The nice thing about IDL is that it is sooo hands-on. Just try it yourself
with a small matrix and check the result by hand:
a=indgen(3,3)
b=[1,2,3]
print,a#b
print,a##b

It's not that hard and definitely faster than waiting for a newsgroup
response.
(Most likely you wanted a##b)

Cheers,
Haje

"jhkim" <planets@dreamwiz.com> wrote in message
news:7652fb5d.0311140809.58ae466@posting.google.com...
> A and B are matrices
> How can I write an IDL expression for A * B (matrix multiplication)in
> mathematics(linear algebra). Which is right, A#B or A##B? I think A##B
> is right....
>
> Thank you.
>
> Best regards!

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[Message index]

		matrix multiplication By: c1dje on Mon, 22 March 1993 14:51
		Re: Matrix multiplication By: Haje Korth on Fri, 14 November 2003 09:48
		Re: matrix multiplication By: Chris[6] on Tue, 28 October 2008 13:59
		Re: matrix multiplication By: russ[1] on Tue, 28 October 2008 14:32
		Re: matrix multiplication By: David Fanning on Tue, 28 October 2008 11:42
		Re: matrix multiplication By: Vince Hradil on Tue, 28 October 2008 19:17

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