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Re: REPLICATE with arrays [message #18894 is a reply to message #18884]

Fri, 11 February 2000 00:00

Liam E. Gumley
Messages: 378
Registered: January 2000

Senior Member

David Fanning <davidf@dfanning.com> wrote in message
news:MPG.130e00a4f5f14484989a29@news.frii.com...
> William Thompson (thompson@orpheus.nascom.nasa.gov) writes:
>
>> Stein Vidar Haugan once proposed the following strategy which appears to
be
>> highly efficient:
>>
>> x2 = rebin( reform(x,3,3,1), 3,3,2)
>
> And Liam Gumley (Liam.Gumley@ssec.wisc.edu) writes:
>
>> IDL> arr = rebin(reform(arr, 3, 3, 1), 3, 3, 2, /sample)
>
> I don't think the IDL newsgroup is the proper place to
> practice the occult sciences. I wish you guys would cut
> it out. :-(

I'll admit that two reshape operations in one line is a bad idea. But if
it's re-written as

arr = reform(arr, 3, 3, 1) ; add an extra dimension
arr = rebin(arr, 3, 3, 2, /sample) ; expand along the extra dimension

then I think it's about as clear as you can get (in the IDL world anyway).

Cheers,
Liam.

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[Message index]

		Re: REPLICATE with arrays By: Craig Markwardt on Fri, 11 February 2000 00:00
		Re: REPLICATE with arrays By: Liam E. Gumley on Fri, 11 February 2000 00:00
		Re: REPLICATE with arrays By: davidf on Fri, 11 February 2000 00:00
		Re: REPLICATE with arrays By: thompson on Fri, 11 February 2000 00:00
		Re: REPLICATE with arrays By: Liam E. Gumley on Fri, 11 February 2000 00:00
		Re: REPLICATE with arrays By: davidf on Fri, 11 February 2000 00:00

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