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Re: Linux Question [message #42736 is a reply to message #42693]

Mon, 21 February 2005 01:40

Nigel Wade
Messages: 286
Registered: March 1998

Senior Member

Jonathan Greenberg wrote:

> So I have to say I've actually been VERY surprised with how quick RSI is
to
> respond -- I've seen bug reports I've submitted get seriously considered
and
> folded into future releases. I should point out I work mostly with ENVI,
> using IDL to support remote sensing work. Most of the features have been
> remote sensing related, which begs the question of whether RSI has a big
> difference in their IDL techs and their ENVI techs.
>
> David: you are the expert on IDL, one thing I haven't figured out is what
> does IDL have that Matlab/Octave doesn't?

Direct graphics. Everything in MATLAB is an "object". When you plot millions
of little blocks, every block is an "object" containing its coordinates,
the fill colour, the fill style, the outline colour, the outline style etc.
The overhead is enormous.

The ability to work with non-double-precision numbers. Whilst MATLAB allows
you to create matrices containing non-DP numbers, you can't actually do
anything with them. Try adding 1 to one for example - result "that
operation is not supported".

A draconian licensing model. IDL requires 1 license per user per host. That
user can run any number of IDL sessions on the same host and requires only
1 license. MATLAB requires 1 license per invocation.

MATLAB comes as a pretty bare installation. If you want any functionality to
get some real work done you are going to have to cough up additional money
for some toolboxes.

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555

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[Message index]

		Linux Question By: David Fanning on Wed, 16 February 2005 09:54
		Re: Linux Question By: Mark Hadfield on Thu, 17 February 2005 12:15
		Re: Linux Question By: Michael Wallace on Thu, 17 February 2005 12:23
		Re: Linux Question By: Mr. No Address on Thu, 17 February 2005 11:33
		Re: Linux Question By: David Fanning on Thu, 17 February 2005 11:09
		Re: Linux Question By: David Fanning on Thu, 17 February 2005 11:06
		Re: Linux Question By: Michael Wallace on Thu, 17 February 2005 11:02
		Re: Linux Question By: Michael Wallace on Fri, 18 February 2005 14:24
		Re: Linux Question By: David Fanning on Thu, 17 February 2005 10:55
		Re: Linux Question By: Mr. No Address on Thu, 17 February 2005 09:15
		Re: Linux Question By: Michael Wallace on Thu, 17 February 2005 08:59
		Re: Linux Question By: R.G.Stockwell on Thu, 17 February 2005 08:36
		Re: Linux Question By: R.G.Stockwell on Thu, 17 February 2005 08:33
		Re: Linux Question By: K. Bowman on Thu, 17 February 2005 06:19
		Re: Linux Question By: David Fanning on Thu, 17 February 2005 02:23
		Re: Linux Question By: Paolo Grigis on Thu, 17 February 2005 01:56
		Re: Linux Question By: Paolo Grigis on Thu, 17 February 2005 01:53
		Re: Linux Question By: Michael Wallace on Wed, 16 February 2005 23:57
		Re: Linux Question By: Karsten Rodenacker on Wed, 16 February 2005 23:55
		Re: Linux Question By: David Fanning on Wed, 16 February 2005 20:44
		Re: Linux Question By: Michael Wallace on Wed, 16 February 2005 20:34
		Re: Linux Question By: Michael Wallace on Wed, 16 February 2005 20:22
		Re: Linux Question By: David Fanning on Wed, 16 February 2005 20:18
		Re: Linux Question By: David Fanning on Wed, 16 February 2005 16:51
		Re: Linux Question By: Mark Hadfield on Wed, 16 February 2005 16:30
		Re: Linux Question By: David Fanning on Wed, 16 February 2005 16:13
		Re: Linux Question By: Robert Barnett on Wed, 16 February 2005 15:43
		Re: Linux Question By: David Fanning on Fri, 18 February 2005 15:54
		Re: Linux Question By: Rick Towler on Fri, 18 February 2005 09:54
		Re: Linux Question By: Michael Wallace on Fri, 18 February 2005 09:18
		Re: Linux Question By: btt on Fri, 18 February 2005 08:01
		Re: Linux Question By: David Fanning on Fri, 18 February 2005 07:43
		Re: Linux Question By: Paul Van Delst[1] on Fri, 18 February 2005 07:25
		Re: Linux Question By: mperrin+news on Thu, 17 February 2005 21:24
		Re: Linux Question By: David Fanning on Thu, 17 February 2005 18:56
		Re: Linux Question By: Jonathan Greenberg on Thu, 17 February 2005 17:41
		Re: Linux Question By: Nigel Wade on Mon, 21 February 2005 01:40

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