Abstract: “Most of spatial analyzes in geographic information systems (GIS) use simple geometric calculations, from which more complex algorithms are built. Traditionally these calculations have been conducted in Euclidean metric, but the geographical information has become more available and planimetric accuracy what has caused these calculations in GIS are inaccurate. These errors could become significantly important in some individuals cases, such as large geographical areas or equidistant projections. Therefore in this paper we proposed an algorithm for calculating the area of polygons supported in a generic method that takes into account the coordinate system and / or projection with which it works, allowing a correct and efficient functioning in GIS applications.”

Keywords: algorithm, computational geometry, geometric analysis, geographic information