San Diego Civic Engagement

The Corporation for National and Community Service is a federal agency that encourages US citizens to volunteer, particularly for federal programs like AmeriCorps. They also have an excellent data site that provides statistics on civic engagement. We used their data extraction tool to pull a few datasets, which are posted on the Library’s data repository.  Here is … Read more San Diego Civic Engagement

Visualize Civic Engagement

Cities thrive when citizens get directly involved in working for their city. Not only do engaged residents solve problems and guide development, but the fact they got involved makes them love their city more, and encourages the people they socialize with to also care more about their city. Because loving something and watching it grow just feels good, creating … Read more Visualize Civic Engagement

Faking a Map in Excel

  UXBlog has a wonderful guide  to making fake maps in Excel. The technique involves putting values from a dataset into bins by rounding latitude and longitude, so that each cell in the spreadsheet represents one degree of lat/lon. If the color of the cell is computed from  the number of datapoints that fall into each cell, the … Read more Faking a Map in Excel

Crime Data Heatmaps

A heat map is a way of presenting data that makes it much easier to understand the density of a variable. Rather than just plotting each pont on a map, a point on a heatmap adds a bit of ‘temperature’ to a location, so a lot of points close together make an area “hotter”. There … Read more Crime Data Heatmaps