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Re: help with structure [message #70295 is a reply to message #70294]

Wed, 31 March 2010 14:40

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Sumit writes:

> I want to create a structure with 2 fields. The fields need to be of
> variable length. I need to have 'n' such structures,where 'n' is
> scalar number. To address the issue of variable length field, I create
> pointers for each field( pointing to variable temp for initialization)
> as shown below:
> mystruct={l1:ptr_new(temp), l2:ptr_new(temp)}
> I don't know how to create copies of this structure. Replicate
> doesn't work as I guess it creates shallow copy.

What do you mean it "doesn't work"?

IDL> mystruct={l1:ptr_new(temp), l2:ptr_new(temp)}
IDL> a= replicate(mystruct, 100)
IDL> help, a
A STRUCT = -> <Anonymous> Array[100]
IDL> a[50].l2 = Ptr_New(findgen(11))

Cheers,

David

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

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[Message index]

		Re: help with structure By: penteado on Wed, 31 March 2010 18:50
		Re: help with structure By: David Fanning on Wed, 31 March 2010 16:13
		Re: help with structure By: penteado on Wed, 31 March 2010 15:47
		Re: help with structure By: David Fanning on Wed, 31 March 2010 15:42
		Re: help with structure By: David Fanning on Wed, 31 March 2010 15:37
		Re: help with structure By: Gray on Wed, 31 March 2010 15:12
		Re: help with structure By: penteado on Wed, 31 March 2010 14:49
		Re: help with structure By: David Fanning on Wed, 31 March 2010 14:40

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