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Scilab - Aplicações Científicas para Linux

Colaboração: Fernando M. Roxo da Motta

Data de Publicação: 11 de Janeiro de 2000

Para o pessoal que precisa de uma ferramenta *do tipo* Matlab e não tenham digamos assim, suporte financeiro para bancar a compra de um, existe um pacote do INRIA ( Institut National de Recherche en Informatique et Automatique ) que cumpre com galhardia este papel. ;)) Ele tem até um suporte bastante extensivo para correr códigos para o Matlab. Acredito que valha a pena conhecer.

Integrado ao pacote vem a "toolkit" "Scicos: a dynamic systems modeler and simulator". Creio que pode ser uma ferramenta importante para simulação de sistemas.

Além dos códigos fontes estão disponíveis binários para :

scilab-2.5-0.i386.rpm                 RPM for the Linux libc6 elf format
scilab-2.5-bin-Linux-i686.tar.gz      non RPM for the Linux libc6 elf format
scilab-2.5-bin-alpha-OSF1-V4.0.tar.gz version for Dec Alpha V4.0
scilab-2.5-bin-HP-UX-B.10.20.tar.gz   binary version for HP9000
scilab-2.5-bin-Linux-ppc.tar.gz       binary version for Linux PPC
scilab-2.5-bin-solaris-5.6.tar.gz     binary version for SUNSOLARIS
scilab-2.5-windows.exe                binary version for Windows 9X/NT

Segue adiante o anúncio da liberação de uma nova versão do pacote.

Linux-Announce Digest #682, Volume #3            Tue, 21 Dec 99 18:13:04 EST

        Scilab Group proudly announces the release of Scilab-2.5

What is Scilab?

        Scilab is a scientific software environment for numerical 
computations. It resembles Matlab/Simulink and MatrixX/SystemBuild
of products. Scilab is developed at INRIA and is available via anonymous 
ftp in source and binary formats:
          in directory    INRIA/Scilab

What is new?

Global variables have been introduced

Integer data types have been added.

New graphic mode has been added to allow scrollbar handling (panner
for X Window and scrollbars for Windows). 
GIF export format is now available for Scilab graphic windows.

Keyboard events and window closing within graphical windows can now be

Scicos graphical user interface has been made more intuitive and
keyboard shortcuts have been added.

Scilab Binary files created by "save" are now system-independent so
they can be exchanged. In particular (compiled macros) *.bin files and
*.cos (scicos diagrams) can be exchanged.

It is now possible to dynamically link C++ procedures with Scilab.

A new data type "mlist" has been added.

A new function "genlib" allows users to compile the .sci files in a
given directory, generate associated library and load it. This
function is particularly useful under windows if VC++ is not

C formatted input output functions (printf, scanf, ..) have been
interfaced to scilab.

Other improvements
- -------------------
Efficiency has been improved using reference argument passing when
possible instead of value passing.

Hypermatrix opreations have been accelerated.

On X Window systems 3D Athena Widgets are used when available instead of
standard  Athena Widgets for a better look.

The "Matlab 4" to Scilab translator has been completed and considerably

                What do we expect from Scilab users

Contributions! Here are a few possibilities.

Now that the integer data types are made available in Scilab:
        an image processing toolbox. 
Read, write and processing of sound signals.

A statistical toolbox.

An identification toolbox.

A signal processing toolbox for Scicos.

Scientific course notes using Scilab (in all languages); note that if 
you write a book in which you propose Scilab examples and exercises, 
you can distribute Scilab on CD with the book.

GUI interface based on the tcl/tk interface.
        A good place to discuss such projects is the scilab newsgroup.

                   Scilab: is it really free?

Yes it is. Scilab is not distributed under GPL or other standard
free software copyrights (because of historical reasons), but Scilab is 
an Open Source Software and is free for academic and industrial use,
without any restrictions. There are of course the usual restrictions 
concerning its redistribution; the only specific requirement is that we 
ask Scilab users to send us a notice (email is enough). For more details 
see or Notice.tex in the Scilab package.

Answers to two frequently asked questions:
        Yes, Scilab can be included a commercial package (provided
proper copyright notice is included).
        Yes, Scilab can be placed on commercial CD's (such as various
Linux distributions).

Merry Christmas and happy Scilabing

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