From Fedora Project Wiki
Introduction
Scilab is a package that provides a numerical analysis environment with a friendly graphical interface. This page provides information specific to the packaging of scilab for fedora as well as some of the dependencies that are currently unavailable through yum.
Status
A Scilab RPM has been proposed in Bugzilla (Bug 750997) and passed the package review process in December, 2011.
Packaging
Scilab is now available in Fedora 16 onwards.
Scilab 5.3
Scilab 5.3.3 has been release in July 2011. All of the dependencies are now available in Fedora.
Scilab 5.4
Scilab 5.4.0 has been release in October 2012. The needed dependencies are under review :