comp.lang.idl-pvwave archive
Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado

Home » Public Forums » archive » Matlab <--> PV-Wave ?
Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend 
Switch to threaded view of this topic Create a new topic Submit Reply
Matlab <--> PV-Wave ? [message #9159] Wed, 11 June 1997 00:00 Go to next message
Franz Dollinger is currently offline  Franz Dollinger
Messages: 1
Registered: June 1997
Junior Member
Hy,

can anyone please tell me about the main differences between
Matlab and PV-Wave?

I worked alot with th latter in the past, but at my new
company people mostly use Matlab. To be able to judge on know
whether it is better to buy a license of PV-Wave or to learn Matlab
I would like to get an idea of the main difference between both
programs.


From a first look it seems to me that Matlab is quite poor in
numerical routines.

thanx alot
Franz
Re: Matlab <--> PV-Wave ? [message #9249 is a reply to message #9159] Sun, 15 June 1997 00:00 Go to previous message
jackel[1] is currently offline  jackel[1]
Messages: 11
Registered: May 1997
Junior Member
In article <33A19EBD.414@airs2.ssec.wisc.edu> Paul van Delst <paulv@airs2.ssec.wisc.edu> writes:

[Useful comments about MatLab deleted]
> It is well known that some Numerical Recipes routines
> that come with the book have bugs in them.

It may be well known, but is it true? I've been hearing rumors about
NR bugs for a long time, but have yet to see _any_ details. Certainly
the first edition had some significant problems, but the second edition
fixed all the ones I was aware of.

Brian Jackel
Re: Matlab <--> PV-Wave ? [message #9262 is a reply to message #9159] Fri, 13 June 1997 00:00 Go to previous message
Jonathan Rogness is currently offline  Jonathan Rogness
Messages: 7
Registered: April 1997
Junior Member
Paul van Delst wrote:
>
> Hmm. I *wish* IDL had the extensive numerical toolboxes that Matlab
> does. You can accuse Matlab of a lot of things, but lacking in
> numerical routines ain't one of them. IDL _still_ uses Numerical
> Recipes routines for goodness sake. It is well known that some
> Numerical Recipes routines that come with the book have bugs in them.

Well, I've never seen any library that doesn't have a few bugs lurking
in it. Numerical Recipes _does_ have some bugs in it (see
http://nr.harvard.edu/nr/upgrade/latest-known-bugs.html), but there
seems to be a trend of spurious bug reports associated with it as well.
(See http://nr.harvard.edu/nr/bug-rebutt.html)

> Some people here have switched from IDL to Matlab because of the
> strength of the latter's numerical toolboxes in optimising non-linear
> inverse problems in atmospheric remote sensing

I can't speak from the Matlab point of view, but I'll agree with those
people who aren't satisfied with IDL's non-linear optimising routines.
Too slow for me -- I write my own routines in C and link them to the NAG
library.

Jon
Re: Matlab <--> PV-Wave ? [message #9265 is a reply to message #9159] Fri, 13 June 1997 00:00 Go to previous message
Paul van Delst is currently offline  Paul van Delst
Messages: 364
Registered: March 1997
Senior Member
Franz Dollinger wrote:
>
> From a first look it seems to me that Matlab is quite poor in
> numerical routines.
>

Hmm. I *wish* IDL had the extensive numerical toolboxes that Matlab
does. You can accuse Matlab of a lot of things, but lacking in numerical
routines ain't one of them. IDL _still_ uses Numerical Recipes routines
for goodness sake. It is well known that some Numerical Recipes routines
that come with the book have bugs in them. Some people here have
switched from IDL to Matlab because of the strength of the latter's
numerical toolboxes in optimising non-linear inverse problems in
atmospheric remote sensing (the lower price and maintenance wasn't just
a side issue either). However, in my opinion, IDL scores over Matlab in
the area of data visualisation (although Matlab 5.0 now has widgets and
other IDL-like features).

cheers,

Paul van Delst
  Switch to threaded view of this topic Create a new topic Submit Reply
Previous Topic: Formatted read of text file
Next Topic: XBM_EDIT not working in IDL 5.0

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Wed Oct 08 20:03:49 PDT 2025

Total time taken to generate the page: 0.00574 seconds