- Register at: https://download.kortforsyningen.dk/ and click:
Opret ny bruger
(create a user) - Follow the registration
- To download the map, use the ftp portal or direct link: ftp://ftp.kortforsyningen.dk/landinddelinger/dagi/SHAPE/DAGIREF_SHAPE_UTM32-EUREF89.zip
- Download "Countries, 2016 - Administrative Units - Dataset" from Eurostat
- Import into QGIS the file
CNTR_RG_01M_2016_4326.geojson
- Select Denmark and Export selected objects as file like
denmark.json
- Open
denmark.json
in mapshaper
Maybe this can also be done in mapshaper directly, I am open for feedback
- Drag on the files POSTNUMMER.dbf, POSTNUMMER.prj, POSTNUMMER.shp and POSTNUMMER.shx into mapshaper
- Using commands
mapshaper -clean
mapshaper -proj wgs84
mapshaper -clip denmark
mapshaper -each FS_CODE="DK--"+POSTNR_TXT
mapshaper -each FS_DESC=POSTBYNAVN
- Optionally simplify the map
- Download as geojson or shp files
Not checked in detail, maybe at http://dawa.aws.dk/