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.
A Scilab RPM has been proposed in Bugzilla (Bug 472639). This has not yet been approved and is awaiting several dependencies. The Scilab binary has been successfully built (locally) with online help, PVM, Matio and Xcos.
Scilab is currently not available in the fedora repositories, as a result of incomplete dependencies required for functionality.
Scilab 5.3.3 has been release in July 2011. Most of the dependencies are available in Fedora. Only jhdf5 (Bug 730970) has not be merged yet.