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Re: Need IDL 8 Help [message #87321 is a reply to message #87316]

Fri, 24 January 2014 11:22

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Matthew Argall writes:

>
> I would do something like the following: Create a hash whose keys represent the message that is to be sent/received. The value of the key is a list that will contain each of the objects corresponding to that message. You can then check if an object is already in the list.
>
> IDL> theHash = hash()
> IDL> obj1 = obj_new('idl_container')
> IDL> obj2 = obj_new('idlanroi')
> IDL> message = 'CHANGED_COLORS'
> IDL>
> IDL> theHash[message] = List()
> IDL> if (max(theHash[message] eq obj1) eq 0) then theHash['CHANGED_COLORS'] -> add, obj1
> IDL> print, theHash[message]
> <ObjHeapVar21665(IDL_CONTAINER)>
> IDL>
> IDL>
> IDL> if (max(theHash[message] eq obj1) eq 0) then theHash['CHANGED_COLORS'] -> add, obj1
> IDL> print, theHash[message]
> <ObjHeapVar21665(IDL_CONTAINER)>
> IDL>
> IDL> if (max(theHash[message] eq obj2) eq 0) then theHash['CHANGED_COLORS'] -> add, obj2

Thanks, good suggestions. I think I have it working now. Although, I
have to admit, I don't really understand this code and the way you use
the Max function. But, making the value of the hash a list works pretty
well, I think. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Need IDL 8 Help By: David Fanning on Thu, 23 January 2014 15:57
		Re: Need IDL 8 Help By: Matthew Argall on Thu, 23 January 2014 18:09
		Re: Need IDL 8 Help By: David Fanning on Fri, 24 January 2014 11:22
		Re: Need IDL 8 Help By: Matthew Argall on Fri, 24 January 2014 11:56
		Re: Need IDL 8 Help By: David Fanning on Fri, 24 January 2014 12:09
		Re: Need IDL 8 Help By: Matthew Argall on Fri, 24 January 2014 12:22
		Re: Need IDL 8 Help By: David Fanning on Fri, 24 January 2014 12:25
		Re: Need IDL 8 Help By: kagoldberg on Sat, 25 January 2014 00:55

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