Create geographical plots for method write up

[jwestw]

To illustrate the steps and intermediate steps that calculation goes through, it would be good to have some graphical outputs.

Plots that would be useful could include:

1. stops and their service areas
2. output areas and population weighted centroids within them
3. service areas with population weighted centroids both within and outside of them

Plots may be produced using geopandas and geoplot or, if a GUI is prefered, then QGis

Some useful geopandas and geoplot related links:

• https://towardsdatascience.com/plotting-maps-with-geopandas-428c97295a73
• https://geopandas.org/en/stable/gallery/plotting_with_geoplot.html
• https://geopandas.org/en/stable/docs/user_guide/mapping.html

[jwestw]

Plots we need:

• Calculation of service areas - buffering.
  • show the process of going from points to polygons to calculate those areas
• Calculation of the population inside of service areas
  • zoomed into subset of a city, show the OA centroids inside the service areas
• All stops in the UK
  • stops showing transport capacity with different hues for different capacities highlighting points of LAs on a map? How a network enquiry would be use to calculate the service area:
• example diagram of network enquiry

Knowing our data

• A plot showing Population Weight Centroids (PWCs) overlaid with road networks, or even better, with buildings. This would give us examples of how close/far the PWCs are to actual residential locations.

Other ideas:

• Plot points that have one service per hour on a weekday, with those which don't greyed out

Tables that could be useful:

Output an aggregated version of those with transport capacity who are disabled/not disabled, age, and sex as shown in Estonia's write up.

[Antonio-John]

Had a random go at plotting the service areas for Hull and comparing to images of the LA. Looks like the calculation seems to make sense!

[nkshaw23]

Attached some plots created in QGIS - can share the geopackage that contains all the layers if people would like.

Method plots designed to show process. Done for York as could get a good mix of city / rural output areas. Images below are:

LA LA + output areas Stops (green = bus, red = rail) Service areas Pop centroids in OAs Pop centroids in service areas Pop centroids not in service areas

[jwestw]

@nkshaw23 These look excellent. Really informative at a glance and will also really help explain the methodology write up. I would love to know how you have done them and whether the other needed-plots that I have listed above can be done by the same method(s).

[nkshaw23]

I can show you tomorrow on the call - but done in QGIS.

Happy to discuss other plots, but the nationwide ones would be difficult to present well due to data sizes..

[nkshaw23]

Making note to add this diagram into the docs before closing the ticket.

[nkshaw23]

Adding extra images (with legend) and additional rural / urban image before closing.