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Re: array dimensions [message #24664 is a reply to message #24589]

Mon, 09 April 2001 08:28

Alex Schuster
Messages: 124
Registered: February 1997

Senior Member

"Richard G. French" wrote:

> David is the master of keywords - I've used SIZE all these years without
> knowing that there was a /DIMENSIONS keyword. I guess the only way to
> know about these things is to read through the documentation over and
> over again and take notes on potentially useful keywords and options.

True. And repeat that for every new version of IDL.

> Which brings me to my question - does anyone out there have a favorite
> keyword on a routine that we mere mortals might not know about, but
> which
> might make our lives much easier? Any suggestions welcome, except for
> HISTOGRAM and PLOT!

MIN() has the MAX keyword so you can compute both values in one step.
And it also allows a second parameter (I wonder why they didn't make
that a keyword) to return the (first) position the the minimum:

IDL> x = sin( findgen( 300 ) / 100 ) ; create array
IDL> print, where( x eq max( x ) )
157
; another variant
IDL> tmp = max( x, pos ) & print, pos
157
; and yet another:
IDL> print, !c
157

Alex
--
Alex Schuster Wonko@weird.cologne.de PGP Key available
alex@pet.mpin-koeln.mpg.de

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[Message index]

		Array Dimensions and WRITE_GIF By: Burkhard Prause on Fri, 26 December 1997 00:00
		Re: array dimensions By: wmconnolley on Mon, 09 April 2001 02:40
		Re: array dimensions By: Martin Schultz on Mon, 09 April 2001 01:16
		Re: array dimensions By: Paul van Delst on Mon, 09 April 2001 07:56
		Re: array dimensions By: davidf on Sun, 08 April 2001 20:13
		Re: array dimensions By: James Kuyper on Mon, 09 April 2001 08:20
		Re: array dimensions By: Craig Markwardt on Mon, 09 April 2001 06:23
		Re: array dimensions By: Richard French on Sun, 08 April 2001 19:42
		Re: array dimensions By: Paul van Delst on Mon, 09 April 2001 07:52
		Re: array dimensions By: davidf on Sun, 08 April 2001 18:29
		Re: array dimensions By: web on Sun, 08 April 2001 17:55
		Re: array dimensions By: davidf on Sun, 08 April 2001 09:11
		Re: array dimensions By: francesco.spada on Sun, 08 April 2001 08:38
		Re: array dimensions By: Craig Markwardt on Sun, 08 April 2001 07:33
		Re: array dimensions By: davidf on Sun, 08 April 2001 07:09
		Re: array dimensions By: Craig Markwardt on Sun, 08 April 2001 06:37
		Re: array dimensions By: davidf on Sat, 07 April 2001 18:40
		Re: array dimensions By: davidf on Sat, 07 April 2001 18:38
		Re: array dimensions By: Richard French on Sat, 07 April 2001 16:41
		Re: array dimensions By: Alex Schuster on Mon, 09 April 2001 08:28
		Re: array dimensions By: davidf on Sat, 07 April 2001 07:03

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