comp.lang.idl-pvwave archive: archive » Re: Little help on arrays

Home » Public Forums » archive » Re: Little help on arrays

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Little help on arrays [message #38052 is a reply to message #38051]

Mon, 16 February 2004 07:12

mchinand
Messages: 66
Registered: September 1996

Member

In article <c0qli8$42a$1@pegasus.fccn.pt>,
Nuno Oliveira <nmoliveira@fc.ul.pt> wrote:
> How do I compare one array with another? I want to avoid comparing
> position per position.
>
> IDL> if [1,1] eq [1,1] then print, 'bingo!'
> % Expression must be a scalar or 1 element array in this context: <BYTE
> Array[2]>.
> % Execution halted at: $MAIN$
>

If you don't want to compare element by element, you could check to see if the max and min of
the difference of the two arrays are the same:

IDL> if max(a-b) eq min(a-b) then print, 'bingo!'

You might want to check to make sure the arrays are the same size first.

--Mike

--
Michael Chinander
m-chinander@uchicago.edu
Department of Radiology
University of Chicago

Report message to a moderator

[Message index]

		Re: Little help on arrays By: mchinand on Mon, 16 February 2004 20:07
		Re: Little help on arrays By: MKatz843 on Mon, 16 February 2004 19:53
		Re: Little help on arrays By: Foldy Lajos on Mon, 16 February 2004 12:13
		Re: Little help on arrays By: JD Smith on Mon, 16 February 2004 11:23
		Re: Little help on arrays By: Craig Markwardt on Mon, 16 February 2004 07:27
		Re: Little help on arrays By: Pepijn Kenter on Mon, 16 February 2004 07:12
		Re: Little help on arrays By: mchinand on Mon, 16 February 2004 07:12

Previous Topic:	Re: Little help on arrays - 2nd try
Next Topic:	array multiplying (for a change)

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 00:18:56 PDT 2025

Total time taken to generate the page: 0.00540 seconds