3. Methodology
3.1. GIS definition
A GIS is an information system specialized in the management and analysis of geographic information
(geospatial information). These systems allow data entry by various channels, including direct scanning and
coordinate input by digital files (Santiago, 2005), both channels used for this study.
The basic functionality of a GIS is the manipulation of data for analysis and generation of new information,
providing results of different types, out of which, in this case, it has been chosen to generate a specific output, a 3D
animation of the Transpyrenean corridor route.
The information that represents the geographic data in a GIS can be encoded in two formats: raster or vector
(ESRI, 2004). In this case, both formats have been made use of.