I have a set of points (x,y,z and value). I need to produce graphs in these "four dimensions" . Anybody knows a suitable software or program that i can use?. I am now programming in Scilab.
Topological analysis (search for minimum, maximum and saddle points). The Marching Cubes algorithm also works, it generates surfaces with the variable "value" with a fixed value (isosurface).
There are some programs that do this type of analysis. I have programmed some that specialize in topological analysis of electronic charge density (the value) in 3D grids.