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Re: what is Floating illegal operand question? [message #43695 is a reply to message #43693]

Mon, 18 April 2005 13:39

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

lixiaoyao writes:

> when I run this code in idl,it generated the following wrong
> information,what is
> wrong there?
> % Compiled module: $MAIN$.
> % Program caused arithmetic error: Floating illegal operand
> window,xs=640,ys=480
> x=10*!pi*findgen(1001)/1000
> sn=sin(x)/x
> plot,x,sn
> end

IDL> Print, Sin(0)/0
-NaN
% Program caused arithmetic error: Floating illegal operand

Not sure you want to be dividing by zero. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: what is Floating illegal operand question? By: Haje Korth on Tue, 19 April 2005 04:51
		Re: what is Floating illegal operand question? By: peter.julyan on Tue, 19 April 2005 03:03
		Re: what is Floating illegal operand question? By: m_schellens on Tue, 19 April 2005 01:43
		Re: what is Floating illegal operand question? By: lixiaoyao on Mon, 18 April 2005 16:08
		Re: what is Floating illegal operand question? By: Michael Wallace on Mon, 18 April 2005 14:51
		Re: what is Floating illegal operand question? By: James Kuyper on Mon, 18 April 2005 14:24
		Re: what is Floating illegal operand question? By: Haje Korth on Mon, 18 April 2005 14:02
		Re: what is Floating illegal operand question? By: Michael Wallace on Mon, 18 April 2005 13:49
		Re: what is Floating illegal operand question? By: Haje Korth on Mon, 18 April 2005 13:30
		Re: what is Floating illegal operand question? By: Haje Korth on Mon, 18 April 2005 13:34
		Re: what is Floating illegal operand question? By: David Fanning on Mon, 18 April 2005 13:39

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