High Quality Contours via GRASS

Sample environment and script to create high quality contours via GRASS and GDAL/OGR. Typical use cases are isobar maps for weather- and elevation maps

It is inspired by an answer on StackOverflow.
http://gis.stackexchange.com/questions/87505/grass-v-generalize-method-douglas-not-working-as-expected

environment

• GRASS GIS 7.2.0
• GDAL 2.1.2, released 2016/10/24

build docker image

• docker build -t grass .

run sample script

• docker run -it --rm -v $(pwd):$(pwd) -w $(pwd) grass ./sample-script.sh
• results in new file sample-data/isolines.geojson

references

• GRASS and Shell
  https://grasswiki.osgeo.org/wiki/GRASS_and_Shell

• GRASS Docker Images
  https://github.com/geo-data/grass-docker