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Re: accesing variables defined in a higher program level [message #33943]

Thu, 06 February 2003 09:57

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

"Isa Usman" <eepisu@bath.ac.uk> writes:

> Hello,
>
> I am trying to get a function to use variable values that are defined in a
> higher level procedure. Since COMMON blocks can't be used in functions is
> there a way round this? here is an example of what i am trying to do;

As other readers have pointed out, you can use common blocks in
functions. But, that's still not the greatest programming practice.
For example, what if you end up needing a double integral? Common
blocks will not survive the nested call.

I have a function integrator on my web page named QPINT1D that allows
you to pass arbitrary data to the function via two methods. The first
method is to pass data in a structure. Obviously you can arrange the
structure any way you like. The second way is to pass the data using
keywords. This also involves passing in a structure, and then QPINT1D
uses the _EXTRA mechanism, which causes the named structure elements
to be converted to named keywords in the function call.

Good luck,
Craig

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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		Re: accesing variables defined in a higher program level By: Craig Markwardt on Thu, 06 February 2003 09:57
		Re: accesing variables defined in a higher program level By: R.Bauer on Thu, 06 February 2003 08:53
		Re: accesing variables defined in a higher program level By: David Fanning on Thu, 06 February 2003 08:55
		Re: accesing variables defined in a higher program level By: David Fanning on Thu, 06 February 2003 08:52

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