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Getting rid of loops [message #18932]

Thu, 17 February 2000 00:00

Jacob Noel-Storr
Messages: 1
Registered: February 2000

Junior Member

I am trying to create non-loopy IDL code for a project I am working on.

I have a very long list of integers ('cycle numbers') and I need some way of
creating an array that consists of just the cycle numbers. For example if I
had:

> cycles=[2,2,2,2,2,6,6,7,7,7,9,9,9,27,27,27]

then I would want a function which would do this kid of thing:

> print,fn(cycles)
[2,6,7,9,27]

At the moment this is done by looping through the data twice. Once to count
how many different values there are and once to write the different values
into an array.

Any suggestions about how this could be achieved without the two 'for'
loops?

Thanks,
Jacob

--
Jacob Noel-Storr
Astronomy Department
Columbia University / Biosphere 2 Center
www.astro.bio2.edu/jacob/
jake@astro.columbia.edu

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		Getting rid of loops By: Jacob Noel-Storr on Thu, 17 February 2000 00:00
		Re: Getting rid of loops By: Nando Iavarone on Fri, 03 March 2000 00:00

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