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Re: run-time function creation [message #83894 is a reply to message #83887]

Wed, 10 April 2013 10:04

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Wednesday, April 10, 2013 10:33:31 AM UTC-4, Paul Mallas wrote:
> I know this is a bit off the wall, but I was wondering if there is a technique or method for doing run-time function creation.
>
>
>
> The reason I ask is I was looking at the IDL integration routines (e.g., qsimp) and this requires a singular argument function name as input. My problem is I have a function with several parameters I need to integrate, but don't have these parameters until I calculate them at run time. If I could somehow create the function dynamically, I could create a function that would satisfy the the qsimp requirement for a single argument function, but prior to run-time I can't.

Well, I have two answers for you.

The first answer is that you can use my QPINT1D which is a better integrator than the IDL-standard quadrature functions. Plus, it allows you to enter in a private variable (a structure) for other parameters.

If you really want run-time functions, then FILE_COMPILE will do that for you. You need to write out a scratch file with the function you want, and then FILE_COMPILE will do the tricky part of compiling it. (not so tricky, but getting the paths right is more work than you might think)

Craig

QPINT1D
http://cow.physics.wisc.edu/~craigm/idl/math.html#QPINT1D

FILE_COMPILE
http://cow.physics.wisc.edu/~craigm/idl/introspect.html#FILE _COMPILE

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[Message index]

		Re: run-time function creation By: Craig Markwardt on Thu, 11 April 2013 09:28
		Re: run-time function creation By: rtk on Thu, 11 April 2013 08:35
		Re: run-time function creation By: PMan on Wed, 10 April 2013 12:57
		Re: run-time function creation By: PMan on Wed, 10 April 2013 11:07
		Re: run-time function creation By: Craig Markwardt on Wed, 10 April 2013 10:04
		Re: run-time function creation By: David Fanning on Wed, 10 April 2013 07:56
		Re: run-time function creation By: Brian Daniel on Wed, 10 April 2013 07:55
		Re: run-time function creation By: PMan on Wed, 10 April 2013 07:47

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