To avoid problems of negative values in GeoTiff format, we have integrated DEMin a way that:
To implement your own visualization, you can write a script along the following ways, e.g. “terrain if sea level rises for 2 meters”:
if (DEM >= 32768) {
elevation = DEM - 65535.0;
}
else {
elevation = DEM;
}
if (elevation > 2.0) {
return [0,0,1];
}
else {
return [elevation/1000,elevation/1000,elevation/1000];
}