Smoothing a Wireframe
The smoothness of a 3D wireframe map is a function of the density and topography of the grid. For example, a 10 by 10 grid file (ten rows and ten columns) appears much more angular than a 50 by 50 grid file created from the same data. To smooth the wireframe map, you need to increase the number of rows and columns in the grid file.
You can increase the number of grid rows or columns in one of two ways. One method is to create a new grid file with more grid nodes in the X and Y directions in the Grid Data dialog.
Alternatively, use the Grids | Edit | Spline Smooth command to insert additional rows and columns into an existing grid file. Also, the Grids | Edit | Filter command can be used to increase the smoothness of the map.