On Mon, Jul 7, 2008 at 9:09 AM, Francis <[EMAIL PROTECTED]> wrote:
>...
> At the moment I keep working with Scilab since I can work with it
> without learning to much new things, but I have spend some time using
> Sage and if Scilab 5 does not show the improvements I would like to
> see I probably lean very hard towards Sage.
>
> By the way it has been mentioned several times on Sage websites that
> Scilab is not open source in the true meaning of the word. If you read
> the license agreement carefully you will find that commercialization
> of the code requires authorization i.e. you can't use the code to
> create your own Matlab/Mathematica to sell it to consumers and any
> derived/composite versions need to say copyright Scilab Enri (or
> something like that). Is that a big deal ...

Yes.  These discussions were usually in the context of why Sage doesn't
somehow work closely with the scilab project (e.g., building on top of it).
The license for Scilab is not GPL compatible so it is illegal for Sage to
build on the work of Scilab.    My understanding is that this may change
in the next version of Scilab.

> I guess I am rambling a bit, but in conclusion: Scilab and Sage are
> different packages with each pros and cons, both seem to have a good
> foundation (from community and government) and will be around for the
> coming years and maybe decades. Physicists/engineers probably will
> prefer Scilab whereas Scilab is not really an option for
> mathematicians. As physicist I have to acknowledge that Sage has some
> good trump card and if Scilab does not improve I will really consider
> using Sage for professional use rather than just interest.

There are a lot of people in the "numerical Python" / numpy / scipy community
who work is all in Sage.  This conference http://conference.scipy.org/ has very
good participation.  Sage definitely aims to one day be a viable alternative
to Matlab.   We care about the physicist and engineer users.

If you do switch to Sage, please consider (re)writing some of our documentation
to be more engineering friendly.

 -- William

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