tRacket

Open Data

Noise Meter devices and noise levels are stored in a webCOMAND Base (cloud database) and made available on this website in the following ways.

• The Noise Map on the home page visualizes aggregate noise meter levels by meter and Toronto ward.
• Noise Meter Graphs for individual noise meters.  Select a meter from the top-left on the home page.
• Toronto Wards geographic data is available on the Toronto Open Data Portal and in a streamlined format for JavaScript in our data.js.
• Open Data API can be queried to access the public device and noise data.  See the section below for more information.

Open Data API

The following information can be used to access the COMAND Web Services API.

Web Services Base URL: https://noisemeter.webcomand.com/ws/
Public API Token: UPooYuLm4Zwu859Ehidgl5Ta19iuKTUG

Examples

Here are a couple of examples to access devices and noise samples in JSON format.

List of noise meter devices:

https://noisemeter.webcomand.com/ws/get
?token=UPooYuLm4Zwu859Ehidgl5Ta19iuKTUG
&query=SELECT DeviceID, RandomizedLatitude, RandomizedLongitude, CityWard.Title, CityWard.LongCode FROM Device

Latest 100 noise samples for a specific device (replace b88 with any valid Device ID):

https://noisemeter.webcomand.com/ws/get
?token=UPooYuLm4Zwu859Ehidgl5Ta19iuKTUG
&query=SELECT DeviceID, Timestamp, Min, Max FROM Noise WHERE DeviceID='b88' ORDER BY Timestamp DESC LIMIT 100

To access the same information in CSV format, append &format=text/csv to the end of the URLs above.

More information about the API will be documented here in the future.  In the meantime, you can refer to the examples above and learn more at COMAND Get Web Service.

Questions

Have questions?  Reach out to us at Civic Tech Toronto #proj-noisemeter on Slack.