Feature/graph-analysis-visualisation

[rdnfn]

This tiny PR adds basic GeoGraphViewer functionality.

It currently is only built on the prior folium plotting functions, next step will be to redo it with ipyleaflet. I am planning to maintain the basic folium support because folium can be used on some platforms that don't support ipywidgets (and therefore ipyleaflet), like google colab. Also: plotting of polygons is not part of it yet and will be added once the df attribute is merged.

Main Changes

• Added GeoGraphViewer class

Other Changes

• fixed changed name for represenative point (to rep_point)
• removed choropleth color legend because not useful in our case.

Demo of usage:

[Croydon-Brixton]

... but that can come in another PR if you want to leave it until you implement the ipyleaflet viewer.

Agree with that 😉

[rdnfn]

@Croydon-Brixton @herbiebradley: Thanks for the reviewing! For the ipyleaflet version I will keep the polymorphism in mind 🚀