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Re: Is it possible to generate an error when it is tried to multiply matrix with different dimensions? [message #85402 is a reply to message #85386]

Tue, 30 July 2013 11:08

Phillip Bitzer
Messages: 223
Registered: June 2006

Senior Member

You could always check before multiplying:

IF N_ELEMENTS(a) EQ N_ELEMENTS(b) THEN c= a*b ELSE MESSAGE, "different number of elements"

and let your error handler "catch" the error.

An FYI - this isn't *really* matrix multiplication. What you're doing is multiplying each element of the arrays together. If you're interested in matrix multiplication, check out:

http://www.exelisvis.com/docs/Matrix_Operators.html

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[Message index]

		Is it possible to generate an error when it is tried to multiply matrix with different dimensions? By: Victor[2] on Tue, 30 July 2013 03:15
		Re: Is it possible to generate an error when it is tried to multiply matrix with different dimensions? By: Michael Galloy on Tue, 30 July 2013 09:26
		Re: Is it possible to generate an error when it is tried to multiply matrix with different dimensions? By: Phillip Bitzer on Tue, 30 July 2013 11:08
		Re: Is it possible to generate an error when it is tried to multiply matrix with different dimensions? By: Victor[2] on Thu, 01 August 2013 00:04

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