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Re: Execute and Call_function of complex things [message #23529 is a reply to message #23527]

Thu, 01 February 2001 14:44

dirk
Messages: 15
Registered: March 1998

Junior Member

... Sorry that didn't post.

Ok, once again. This goes in the "why doesn't it work like i think it
should" category.

Suppose I have an expression which, for the sake of argument, looks
something like:

exp((-1.)*(0.0 + Gauss1(x,p(0:2)) + Gauss1(x,p(3:5))))

where gauss1 is another function (of x) and p is a set of input
parameters.

I want to evaluate this function, but can't seem to do it with either
call_function or execute. I've tried:

model='exp((-1.)*(0.0 + Gauss1(x,p(0:2)) + Gauss1(x,p(3:5))))'
result=call_function(model,p)

and
expstring='model=exp((-1.)*(0.0 + Gauss1(x,p(0:2)) + Gauss1(x,p(3:5))))'
result=call_function(expstring,p)

to no effect... What am i missing about call_function or execute? Do all
the elements of the evaluated function need to be IDL native? Does the
conversion of a string to a function make anyone else uneasy?

Thanks for any help! - Dirk

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[Message index]

		Re: Execute and Call_function of complex things By: Craig Markwardt on Thu, 01 February 2001 21:25
		Re: Execute and Call_function of complex things By: Pavel A. Romashkin on Thu, 01 February 2001 16:37
		Re: Execute and Call_function of complex things By: dirk on Thu, 01 February 2001 14:44

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