SedonaKepler
SedonaKepler offers a number of APIs which aid in quick and interactive visualization of a geospatial data in a Jupyter notebook/lab environment.
Inorder to start using SedonaKepler, simply import Sedona using:
from sedona.spark import *
Alternatively it can also be imported using:
from sedona.maps.SedonaKepler import SedonaKepler
Following are details on all the APIs exposed via SedonaKepler:
Creating a map object using SedonaKepler.create_map¶
SedonaKepler exposes a create_map API with the following signature:
create_map(df: SedonaDataFrame=None, name: str='unnamed', config: dict=None) -> map
The parameter 'name' is used to associate the passed SedonaDataFrame in the map object and any config applied to the map is linked to this name. It is recommended you pass a unique identifier to the dataframe here.
If no SedonaDataFrame object is passed, an empty map (with config applied if passed) is returned. A SedonaDataFrame can be added later using the method add_df
A map config can be passed optionally to apply pre-apply customizations to the map.
Note
The map config references every customization with the name assigned to the SedonaDataFrame being displayed, if there is a mismatch in the name, the config will not be applied to the map object.
Example usage (Referenced from Sedona Jupyter examples)
map = SedonaKepler.create_map(df=groupedresult, name="AirportCount")
map
Adding SedonaDataFrame to a map object using SedonaKepler.add_df¶
SedonaKepler exposes a add_df API with the following signature:
add_df(map, df: SedonaDataFrame, name: str='unnamed')
This API can be used to add a SedonaDataFrame to an already created map object. The map object passed is directly mutated and nothing is returned.
The parameters name has the same conditions as 'create_map'
Tip
This method can be used to add multiple dataframes to a map object to be able to visualize them together.
Example usage (Referenced from Sedona Jupyter examples)
map = SedonaKepler.create_map()
SedonaKepler.add_df(map, groupedresult, name="AirportCount")
map
Setting a config via the map¶
A map rendered by accessing the map object created by SedonaKepler includes a config panel which can be used to customize the map
Saving and setting config¶
A map object's current config can be accessed by accessing its 'config' attribute like map.config. This config can be saved for future use or use across notebooks if the exact same map is to be rendered every time.
Note
The map config references each applied customization with the name given to the dataframe and hence will work only on maps with the same name of dataframe supplied. For more details refer to keplerGl documentation here