Using leaflet to create geographical mappings. NHS geographies as example.

Overview

• Code as: 02-geoplot-approach.R.

• ICB boundary downloaded from ONS Open Geography Geoportal. Others, such as Regions or Local Authorities, can also be sourced.

• Additional ICB information (for hover, colour-coding, labels, filtering) can be defined in ICS_master.xlsx. In this case, as an example, we sourced some additional population projection information and practice number information from NHS England allocations.

• Trust file trusts_master.xlsx should contain latitute and longitude. This can be geocoded from postcodes (provided in reference files, namely etr.csv and ect.csv), by using a library such as postcodesioR.

• Further trust information (for hover, colour-coding, labels, filtering) can be defined as additional columns in the same file.

Example results *

*(will render from https://nhsengland.github.io/leaflet-geomaps-NHS/). If seeing readme, click to website or follow links below.

simple cloropleth of ICB boundaries

Output of simple cloropleth of ICB boundaries

<iframe src="Output/ICS_2023-06-28-2.html" height="600px" width="100%" style="border:none;"></iframe>

cloropleth of ICB boundaries colour-coded for population

Output of cloropleth of ICB boundaries colour-coded for population

<iframe src="Output/ICS_pop_2023-06-28-2.html" height="600px" width="100%" style="border:none;"></iframe>

ICB layer with added Trust markers layer

Output of ICB layer with added Trust markers layer

<iframe src="Output/AOPv02-cloro-ICS_Trust_2023-06-28-2.html" height="600px" width="100%" style="border:none;"></iframe>

ICB layer with added Trust circles layer

Output of ICB layer with added Trust circles layer

<iframe src="Output/AOPv02-circles-cloro-ICS_Trust_2023-06-28-2.html" height="600px" width="100%" style="border:none;"></iframe>