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Exercise

Area in km squared, geometry in decimal degrees

In this exercise, you'll start again with the council_districts GeoDataFrame and the permits DataFrame. You will change the council_districts to use the EPSG 3857 coordinate reference system before creating a column for area. Once the area column has been created, you will change the CRS back to EPSG 4326 so that the geometry is in decimal degrees.

Instructions

100 XP
  • Change the coordinate reference system for the council_districts to EPSG 3857, and print the crs and first two rows again.
  • Create a column called area. Divide the area of each polygon by sqm_to_sqkm to get the area in kilometers squared.
  • Change the coordinate reference system for the council_districts back to EPSG 4326. Print the crs and first two rows.