1

I am trying to visualise some street-level data I got, but since I'm very new to GIS I don't know the correct terminology to Google. My data looks like this:

Street, Incident Count
Congo Road, 12
Roydene Rd, 21
....

Using a combination of geocoding and Leaflet.js, I managed to get something like this:

current state

However, with geocoding I only get the geometric center of each street, so the visualisation isn't very informative. I'd like to get an image, where each street is colour-coded according to how many incidents occurred in it, e.g (excuse my poor Paint skills)

Desired effect

I was thinking I can use OSM to get the coordinates of each node that a street consists of, so I'd be able to represent a street as a collection of points, which would make the visualisation a bit better.

Any other suggestions?

New contributor
mbatchkarov is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.
  • OS Open Roads (Open Data from Ordnance Survey) ordnancesurvey.co.uk/opendatadownload/products.html the data is good for attaching your own attributes – Mapperz Aug 14 at 17:57
  • Thematic Mapping (TFL have roads level thematic map) content.tfl.gov.uk/… – Mapperz Aug 14 at 18:01
  • You could get the street lines from OSM or the ordnance survey, break them up into short sections (optional), attach the incidence data to the street lines by a table join based on the street name attribute -or- a spatial join -or- intersection, calculate points-per-distance for each street as [the number of points on each line segment] / [the length of that line segment], and color-code the lines based on their points-per-distance value. I don't know the exact steps in Leaflet, but it should be a fairly simple task in any GIS. The bold terms should help with Googling. – csk Aug 14 at 18:41

Your Answer

mbatchkarov is a new contributor. Be nice, and check out our Code of Conduct.

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.