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Re: Anonymous Math Functions in IDL like Matlab [message #75371 is a reply to message #75310]

Thu, 03 March 2011 15:13

rtk
Messages: 22
Registered: September 2008

Junior Member

I wrote a bunch of higher-order function stuff for IDL awhile back and
included a hack that simulated a lambda function. Basically, it
defined the function on the fly and returned a string with the actual
name. You then used this with the higher-order function (or any
function). So, for your example,

square = lambda('x:x^2')

but to use it directly:

ans = call_function(square, 4)

Outside the context of a higher-order function, this isn't really that
useful. Still, if you want the code, I'll send it, just email me
"oneelkruns" "hotmail" "com". The higher-order functions were DLMs
for Linux and Windows, 32-bit only.

Also, you can define a procedure/function in IDL from the command
line. No need to quit and type a new file:

IDL> .run
- function square, x
- return, x*x
- end
% Compiled module: SQUARE.
IDL> print, square(4)

Perhaps what you are really looking for?

Ron

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[Message index]

		Anonymous Math Functions in IDL like Matlab By: Ammar Yusuf on Wed, 23 February 2011 17:47
		Re: Anonymous Math Functions in IDL like Matlab By: Ammar Yusuf on Fri, 25 February 2011 16:50
		Re: Anonymous Math Functions in IDL like Matlab By: rtk on Thu, 03 March 2011 15:13
		Re: Anonymous Math Functions in IDL like Matlab By: Michael Galloy on Fri, 25 February 2011 08:16

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