To build isoline maps, the program interpolates each data point value onto the grid nodes. An orthogonal 100x100 grid is automatically overlaid to encompass all data points and borders. Use the “Objects->Grid” dialog to make the grid finer, typically to obtain smoother isolines, or to define the grid with square cells. The length of a square cell side should be given units of X and Y.
The button |
in the
toolbar panel shows or hides the grid. The grid parameters are automatically stored in the
directory of input data.