stud/contours/README.md

Countour line generator from LIDAR data

Usage:

1. Download contour lines in format 6062999.75,584000.75,88.07: coordinate pair and height (in meters) to DTM_XX_YY_N.zip files.
2. Adjust BOUNDS in the Makefile.
3. Run make -j$(nproc) smooth_<X>.gpkg. This will output a geo-package with contour lines every X meters. X can be fractional (e.g. smooth_2.5.gpkg).

Dependencies:

• postgis
• gdal-bin
• unzip

TODO:

1. Replace managedb stack with postgis-over-docker. This will lead to a less fragile postgis setup.
2. Accept BOUNDS in a way that does not require to change the Makefile.