The CartoDB platform

CartoDB is a cloud-based GIS platform which provides data management, query, and visualization capabilities. CartoDB is based on Postgres/PostGIS in the backend, and one of the most exciting functions of this platform is the ability to pass spatial queries using PostGIS syntax via the URL and HTTP API.

Publishing the data to CartoDB

To publish the data to CartoDB, you'll first need to establish an account. You can easily do this with the Google Single sign-in or create your own account with a username and password. CartoDB offers free accounts, which are usable for an unlimited amount time. You are limited to 50 MB of data storage and all the data published will be publically viewable. Once you've signed up, you can upload the layer produced in the previous section. Perform the following steps:

1. Zip up the shapefile-related files, at c3/data/output/channels.* and c3/data/output/toxic_channels.*, to prepare them for upload to CartoDB.
2. Log in at https://cartodb...