Change geopandas dataframe to_crs() usage syntax (#1251)

* Change input from deprecated data.to_crs(epsg=4326) to data.to_crs('EPSG:4326')

* Convert crs to string if provided as a dict

* Revert "Convert crs to string if provided as a dict"

This reverts commit 7dff5aa.

Co-authored-by: Artem Nikitin <[email protected]>
Co-authored-by: Frank <[email protected]>

Author: 3 people

folium/features.py

@@ -492,7 +492,7 @@ def process_data(self, data):
         elif hasattr(data, '__geo_interface__'):
             self.embed = True
             if hasattr(data, 'to_crs'):
-                data = data.to_crs(epsg='4326')
+                data = data.to_crs('EPSG:4326')
             return json.loads(json.dumps(data.__geo_interface__))
         else:
             raise ValueError('Cannot render objects with any missing geometries'