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Re: majority voting [message #65148 is a reply to message #65079]

Thu, 12 February 2009 11:58

pgrigis
Messages: 436
Registered: September 2007

Senior Member

JD Smith wrote:

>
> So the bottom line is that '++f[inds] ' and 'f=histogram(inds)' for
> integer 'inds' are essentially identical in results and performance.
> For floating point data, you can simply pre-scale to integer (which is
> what HIST_ND actually does). Obviously, you don't get reverse
> indices, but otherwise you could quite literally rewrite HIST_ND
> without once using HISTOGRAM! Even if it's not any faster, the ++
> syntax may be clearer for certain problems.
>
> Good find.
>
> JD

And in case any other person a bit more slow on the intake
(like me) is wondering what the heck ++ and -- do in IDL,
they can be found in the documentation under "Mathematical Operators"
(searching for "++" did not return anything useful for me).

Ciao,
Paolo

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[Message index]

		majority voting By: Mort Canty on Wed, 11 February 2009 08:14
		Re: majority voting By: Allan Whiteford on Fri, 13 February 2009 01:31
		Re: majority voting By: David Fanning on Sat, 14 February 2009 08:44
		Re: majority voting By: JD Smith on Thu, 12 February 2009 14:45
		Re: majority voting By: Foldy Lajos on Thu, 12 February 2009 12:47
		Re: majority voting By: David Fanning on Thu, 12 February 2009 12:11
		Re: majority voting By: pgrigis on Thu, 12 February 2009 11:58
		Re: majority voting By: JD Smith on Thu, 12 February 2009 10:49
		Re: majority voting By: Mort Canty on Thu, 12 February 2009 07:45
		Re: majority voting By: JD Smith on Thu, 12 February 2009 07:08
		Re: majority voting By: David Fanning on Thu, 12 February 2009 05:43
		Re: majority voting By: Allan Whiteford on Thu, 12 February 2009 04:17
		Re: majority voting By: Mort Canty on Thu, 12 February 2009 01:15
		Re: majority voting By: JD Smith on Wed, 11 February 2009 15:20
		Re: majority voting By: ben.bighair on Wed, 11 February 2009 14:03
		Re: majority voting By: Allan Whiteford on Mon, 16 February 2009 04:11

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