::  Posts  ::  RSS  ::  ◂◂RSS  ::  Contact

Visualizing Prediction Inaccuracy

February 26th, 2012
transit, mbtaplot  [html]
A major goal of mbtaplot is to visualize bus predictions by converting timing information to locations on a map. One thing I've struggled with is how to represent information getting out of date: the longer since we last got a position update the less accurate our estimate is. I think I've got a good solution now, adding a line back from the prediction to the last reported location. The longer the tail, the less sure we are about the position:






The main thing I like about mbtaplot over nextbus or mbtainfo is that because it gives me more information I can second guess the predictions. The goal with this new feature is to intuitively convey more information about the trustworthiness of the information.

(At some point I want to figure out how to get something like this on my phone; the current version uses too much javascript for that.)

Comment via: google plus, facebook

Recent posts on blogs I like:

No need to explain

I haven’t been posting much lately for several reasons, but mainly I just haven’t felt the desire to post. My posts usually come from trying to figure something out through reflection, or to explain myself to myself. I haven’t felt the need to explain mys…

via Holly Elmore December 8, 2019

Grad school is worse for public health than STDs

(The way you can *really* tell something is horribly wrong is that grad students find PhD Comics darkly funny, not just dark.)

via benkuhn.net December 8, 2019

I’m Giving a Talk About Construction Costs Tomorrow

By popular demand, I’m giving the talk I gave 2 weeks ago at NYU, again. The database will be revised slightly to include more examples (like Ukraine, which I added between when I gave the talk and when I blogged about it), and I may switch around a few t…

via Pedestrian Observations December 2, 2019

more     (via openring)

More Posts:


  ::  Posts  ::  RSS  ::  ◂◂RSS  ::  Contact