[Info-gsl] release 0.10 of GSL Shell with new contour plot implementation

[Francesco Abbate]

Hi all,

I'm glad to announce the release 0.10.0 of GSL Shell. This new release
does improve GSL Shell in several ways to make it more reliable and
simple to use.

Here a short list of the more important changes with this release of GSL
Shell:

* A contour plot algorithm is implemented. It is written entirely in
  Lua and it is quite fast and robust. The module name is "contour".

* An “high precision” experimental contour plot is also available. It
  is much more computational expensive but it draws accurate smooths
  curve and it does require the derivatives of the function. The
  module name is "hpcontour".

* To print an expression now you don’t need to write an ‘=’ sign
  before.

* Some serious bugs related to the graphical window system have been
  fixed. Now the plotting system appears to be reliable in all
  situations both on Windows and on X Window.

* More GSL modules implemented:
  - Basis splines
  - Linear Regression
  - Multi variables minimization
  - Eigensystems resolution

The project documentation website address is:

http://www.nongnu.org/gsl-shell/

In the download page you will find the source code, the windows
binaries and the documentation in HTML format.

You can test the modules by using the examples in the "examples"
directory. For example, to test the ODE module you can type:

> dofile('examples/ode.lua')
> demo1()
> demo2()

You can give a look to the examples directory to understand better how
the different modules works. Some examples you may wish to try are:
'plot', 'graphics', 'fractals', 'minimize', 'contour', 'hpcontour'.

All the modules are documented in the online documentation page and
the documentation can also be downloaded in HTML format from the
download page.

The author has made a lot of efforts to ensure the quality of the
software and of the documentation but some bugs can be still present
and the documentation can incomplete or not entirely accurate in some
cases. You can help us by reporting any problem to the author.

We are also looking for volunteers so if you want to help don't hesitate
to contact the author.

Enjoy,
Francesco

PS: We have started a new mailing list about GSL Shell. If you want to
    subscribe here the adress:

    http://lists.nongnu.org/mailman/listinfo/gsl-shell-info