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Re: Constant Size Array in Class Init [message #76237 is a reply to message #76233]

Mon, 23 May 2011 14:32

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Chris Williams writes:

> I am creating a class that holds multidimensional data of several
> different arrays.What I am trying to do is create a class to hold the
> arrays, and then define the array sizes in the init function since
> they will be different sizes.
>
> For example, I want to do something like this
>
> FUNCTION myclass:init, dim1, dim2, dim3
>
> myarray = dblarr(dim1, dim2, dim3)
>
> RETURN,1
> END
>
> PRO myclass__define
>
> void = {myclass, myarray :dblarr } ;NO SIZE ON ARRAY
>
> RETURN
> END
>
> However, I get a conflicting data structure error without first
> defining the size of the array in the procedure myclass__define. Is
> there an empty array object that allows me to define the array size at
> initialization and not at object creation?

You are going to have to define this field as a pointer
to an array in IDL.

void = {myclass, myarray :ptr_new() } ;NO SIZE ON ARRAY

Then,

myArray = Ptr_New(dblarr(dim1,dim2,dim3))
Help, *myArray

Cheers,

David

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

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[Message index]

		Re: Constant Size Array in Class Init By: David Fanning on Mon, 23 May 2011 15:18
		Re: Constant Size Array in Class Init By: David Fanning on Mon, 23 May 2011 15:16
		Re: Constant Size Array in Class Init By: penteado on Mon, 23 May 2011 15:11
		Re: Constant Size Array in Class Init By: Chris Williams on Mon, 23 May 2011 15:03
		Re: Constant Size Array in Class Init By: Chris Williams on Mon, 23 May 2011 14:59
		Re: Constant Size Array in Class Init By: David Fanning on Mon, 23 May 2011 14:32

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