Making the geovent map

The geovent map is a lot like the starting point map we discussed earlier. It's basically a boolean (black/white, on/off) map that says where the geovents go.

To place geovents, select the 'edit geovent map' button in the Spring Mapping wizard, highlighted below:

This will make L3DT display the 'Spring-Geovents' map and open the 'indexed map brush' tool (as shown below), which we'll use to apply the geovents.

To place a geovent, first select the 'Geovent' option in the value drop-list, as shown below:

Then, to place the geovent, simply left-click the brush tool on the map. When you do this, the map pixel where you clicked should turn to a white spot. To remove a geovent, select the 'None' option in the value drop-list, and click on the existing geovent.

When you are done, your 'Spring-Geovents' map should look something like this:

The next stage is the feature map.