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Re: Array multiplication: implicit loop query [message #26247 is a reply to message #26191]

Mon, 13 August 2001 06:46

Paul van Delst
Messages: 364
Registered: March 1997

Senior Member

george Millward wrote:
>
> Hi there,
>
> Thanks for everyones help.
>
> I have inserted the "rebin" function and this works fine.
> I am still a little intrigued as to why IDL works this way

I'm sorta intrigued why you think it would work the other way. Somewhere someone had to
make a decision what to do in this respect. What would expect the default behaviour to be
if you mixed not just 1-D and 3-D arrays, but had a couple of 2-d or 4-d arrays also? Or
if you had some subscripted arrays in the expression? Which dimensions get "promoted" or
"rebinned" with respect to others? Seems to me like using the lowest common dimensions
makes more sense - not just for implementation but also for spotting errors when you've
mixed up your dimensions. It, uhh, ehem, happens to me all the time... :oD

paulv

--
Paul van Delst A little learning is a dangerous thing;
CIMSS @ NOAA/NCEP Drink deep, or taste not the Pierian spring;
Ph: (301)763-8000 x7274 There shallow draughts intoxicate the brain,
Fax:(301)763-8545 And drinking largely sobers us again.
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[Message index]

		Array multiplication: implicit loop query By: george on Fri, 10 August 2001 03:56
		Re: Array multiplication: implicit loop query By: bennetsc on Tue, 14 August 2001 23:57
		Re: Array multiplication: implicit loop query By: Richard Younger on Mon, 13 August 2001 13:59
		Re: Array multiplication: implicit loop query By: david[2] on Mon, 13 August 2001 11:52
		Re: Array multiplication: implicit loop query By: Richard Younger on Mon, 13 August 2001 11:37
		Re: Array multiplication: implicit loop query By: david[2] on Mon, 13 August 2001 07:55
		Re: Array multiplication: implicit loop query By: Craig Markwardt on Mon, 13 August 2001 06:58
		Re: Array multiplication: implicit loop query By: Paul van Delst on Mon, 13 August 2001 06:46
		Re: Array Multiplication By: Craig Markwardt on Sun, 25 March 2012 12:58
		Re: Array Multiplication By: lecacheux.alain on Sun, 25 March 2012 08:09

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