In this tutorial, I'll show you how to set up a Google Form and use Google App Scripts to store results directly to a CartoDB. As a bonus, we also will use a function to geocode location data using the Google service.

In the end we will have:
A form: docs.google.com/forms/d/1KmHy6EBmwdBHrPHfIvRiZgwZxVNj7_fjSk6Um2EHENM/viewform
A map: bl.ocks.org/andrewxhill/raw/5579335/

For all code used here, see here bl.ocks.org/andrewxhill/5579335

In this screencast we go over an entire project creating a population map of California. The screencast is based on Mike Bostocks example using D3. In this case we go over downloading data from two datasets, the polygons and the census data, and we combine them on a map using CartoDB.

The result of the video can be seen here: cdb.io/ZSjR1L

Here, I'm going to do some intersections and data analysis using points, linestrings, and polygons in CartoDB. This demo also looks at how to merge data from multiple tables and how to style your results.

Learn how to use the map interface in CartoDB to draw and store you polygons, points, or linestrings

A visual analysis of credit card transactions before and during Mobile World Congress 2012 to reveal the economic impact on the city.

The interactive visualization shows the number of credit card transactions in Barcelona performed by locals and visitors. It compares historical data from the week before and during the MWC 2012 (Feb 27 - Mar 2), showing the social dynamics of the city along the week. The data has been wholly anonymized, and includes only where and when transactions were performed.

Check out the visualization live at:

mwcimpact.com/