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Re: Passing a structured variable as an argument of procedure [message #14703]

Mon, 22 March 1999 00:00

Martin Schultz
Messages: 515
Registered: August 1997

Senior Member

VU KHAC Tri wrote:
>
> Hi folks,
>
> I'm very new in IDL programming.
> My question is can I pass a structured variable as an argument of a
> procedure ?
> How to define this ?

(A) if you create a structure outside of your procedure, you can pass it
like any other variable either as parameter or keyword:

a = { test:'my name', value=100 }

my_proc,a

or my_proc,structure=a

(you may find my little chkstru function helpful to test whether
what you passed really is a structure and [optionally] if it contains
the fields ("tags") that you need. You can get it from my webpage (see
below)).

(B) same thing holds if you create your structure within your procedure.
Example:

pro my_proc,newstru

newstru = { dummy:1.0, truevalue:1 }
end

(and in "main"):
my_proc,test
print,test

Hope this helps,
Martin.

--
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Dr. Martin Schultz
Department for Engineering&Applied Sciences, Harvard University
109 Pierce Hall, 29 Oxford St., Cambridge, MA-02138, USA

phone: (617)-496-8318
fax : (617)-495-4551

e-mail: mgs@io.harvard.edu
Internet-homepage: http://www-as.harvard.edu/people/staff/mgs/
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		Re: Passing a structured variable as an argument of procedure By: Martin Schultz on Mon, 22 March 1999 00:00
		Re: Passing a structured variable as an argument of procedure By: Ivan Zimine on Mon, 22 March 1999 00:00

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