
Object of class sf for 4-digit postcode regions in the Netherlands
      Source: R/data_nl_gemeente.R
      nl_postcode4.RdAn object of class sf (simple feature) for 4-digit postal
codes (Dutch: postcode) regions in the Netherlands.
Format
A simple feature object with 4053 rows and 7 variables:
- pc4
- 4-digit postal code 
- areaname
- name of corresponding 4-digit postal code 
- city
- name of city 
- biggest_20cities
- pc4 is in one of the following twenty (biggest) cities in the Netherlands: Amsterdam, Rotterdam, 's-Gravenhage, Utrecht, Eindhoven, Tilburg, Groningen, Almere, Breda, Nijmegen, Enschede, Apeldoorn, Haarlem, Amersfoort, Arnhem, 's-Hertogenbosch, Zoetermeer, Zwolle, Maastricht, Leiden. 
- geometry
- geometry object of postal code 
- lon
- longitude of the 4-digit postal code centroid 
- lat
- latitude of the 4-digit postal code centroid