Generate a .25 degree tileset for an area in northern California
regions -R-123.5/-122.75/37.75/38.75 -T .25
Output:
regions_tile_set.shp
Generate DEMs of all the tiles
waffles -R regions_tile_set.shp -E 1s -M cudem:pre_count=1:filter_outliers=85:min_weight=.6 -O nocal -P epsg:4326+5703 -p -w -X0:5 mar_grav,-106:bathy_only=True,.001 charts,-200,.01 hydronos:datatype=xyz,-202,.1 copernicus,-103,.6 ehydro,-203,.6
Output:
nocal1_n38x00_w123x00_2024v1.tif
nocal1_n38x00_w123x50_2024v1.tif
nocal1_n38x25_w123x25_2024v1.tif
nocal1_n38x50_w123x00_2024v1.tif
nocal1_n38x50_w123x50_2024v1.tif
nocal1_n38x75_w123x25_2024v1.tif
nocal1_n38x00_w123x25_2024v1.tif
nocal1_n38x25_w123x00_2024v1.tif
nocal1_n38x25_w123x50_2024v1.tif
nocal1_n38x50_w123x25_2024v1.tif
nocal1_n38x75_w123x00_2024v1.tif
nocal1_n38x75_w123x50_2024v1.tif
Generate hillshades of all the DEMs, setting min/max z of the CPT so the hillshade edges match:
for i in nocal1*v1.tif; do perspecto -M hillshade $i --min_z -360 --max_z 800; done
Figure 1. DEM hillshade generated from CUDEM code example.