VISIM is a GSLIB style program that can be used to solve linear inverse problems, using either Sequential Gaussian Simulation or Direct Sequential Simulation (with histogram reproduction) conditioned to noisy block data.
It can also function as a conventional point based simulation algorithm.
The mGstat interface enables one to read VISIM parameter files into a Matlab structure. Any VISIM option can be changed through this structure.
Using mGstat, VISIM can be used to perform Conditional Simulation thorugh Error Simulation. M, and S-GeMS are provided