Surfer - A powerful, flexible, easy-to-use contouring and 3D surface mapping software for the scientists and engineers. The sophisticated gridding methods transform X-Y-Z data into publication quality contour, 3D waveforms, vector, shaded relief, image, post & base maps. Overlay or stack any number of maps and display an unlimited number of maps per page, customizing the presentation as desired. Surfer is used extensively for terrain modelling, surface analysis, gridding, volumetrics, GIS applications & much more.