Design of anisotropic functions within spatial analysis of data

The calculation of the minimum cost path is one of the newest tools in the spatial analysis of data. The problem acquires an added complexity when the cost associated to a phenomenon not only depends on its intensity but also on the direction in which it is revealed in the space. In this case, the authors run into an anisotropic phenomenon where the friction associated with it is also anisotropic. The article describes a methodology for the design of cost functions as well as anisotropic friction functions, which are based on semispatial statistical items as they are the circular variables.