golden.3d.siteFrom a piece of paper and one digital file, can Surfer generate a beautiful and informative contour map of elevation values? You bet it can! There are a few steps to this process. You need to convert your paper data into digital x,y,z data, grid that x,y,z data, create a BLN file of the outline of the house, and blank the grid file with that outline. Then you can create a contour map of the blanked grid, and display the DXF of the floorplan overlaid on the contours if desired. The steps for each of these processes are detailed below, and sample files are attached so you can step through this process yourself. Read More