ENVI is the premier software solution for processing and analyzing geospatial imagery and is designed to be used by everyone from GIS professionals to image analysts and image scientists, regardless of prior experience with imagery.
Scilab includes hundreds of mathematical functions, and it is possible to add new, written in different languages ??(C, C + +, Fortran, etc.). There are also a variety of data structures (lists, polynomials, rational functions, linear systems), an interpreter and a high level language.