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Re: make all array values equal to zero [message #89861 is a reply to message #89857]

Thu, 11 December 2014 07:58

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 12/11/14, 8:12 am, g.nacarts@gmail.com wrote:
> Hi
>
> Can I use the "greater than" operator to make all array values
> greater than 100 equal to zero?
>
> E.g. A = [[1,2,3],[120,4,200]] to become A = [[1,2,3],[0,4,0]]
>
> Many Thanks
>

In addition to the other methods mentioned:

IDL> print, (A le 100) * A
1 2 3
0 4 0

And, if you really want to know if there was some way to do it with
greater than operator, yes you can:

IDL> print, (1B - (A gt 100)) * A
1 2 3
0 4 0

Mike
--
Michael Galloy
www.michaelgalloy.com
Modern IDL: A Guide to IDL Programming (http://modernidl.idldev.com)
Research Mathematician
Tech-X Corporation

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[Message index]

		make all array values equal to zero By: g.nacarts on Thu, 11 December 2014 07:12
		Re: make all array values equal to zero By: lecacheux.alain on Thu, 11 December 2014 07:20
		Re: make all array values equal to zero By: Helder Marchetto on Thu, 11 December 2014 07:20
		Re: make all array values equal to zero By: Michael Galloy on Thu, 11 December 2014 07:58
		Re: make all array values equal to zero By: lecacheux.alain on Thu, 11 December 2014 08:59
		Re: make all array values equal to zero By: Michael Galloy on Thu, 11 December 2014 09:52
		Re: make all array values equal to zero By: g.nacarts on Fri, 12 December 2014 06:54

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