How to define slices for a DTM or Distance Map

The slicing consists on the generation of a thematic image from a rectangular or triangular grid or distance map. After defining the slices it is necessary to associate them with thematic classes of a previously defined category.

  • click on DTM - Slicing... and then on Slice Definition... or DTM - Buffering... and then Definition... at the window "Distance Map";
  • in case of slicing a numeric grid, observe that the Minimum Z Value and Maximum Z Value are presented on the top of the window. These values are not presented for a Distance Map;
  • in Step: select the slicing edition mode Fixed or Variable;
  • if you choose Fixed, provide the Start value, End value and Step, i.e., the intervals for slices equidistribution;
  • if you choose Variable, provide each Z value, Start and End, for each desired interval;
  • click on Insert after each interval (Variable step) or after filling in the Start and End values, in the Fixed mode:
  • click on Delete to remove a selected slice;
  • click on Apply to confirm the slices created and go back to the previous window. The slices association with thematic classes should be done afterwards.

DTM Slicing

Distance Map - Creating a distance map


See also:
Using SPRING - Reference Information
How to generate a Rectangular Grid
How to generate a triangular grid