Explore the Application Filter Interaction

Finally, use the application filters to determine how the selections interact.

Remember that there are 39 possible categories of police incidents, distributed across policing 10 districts.

1. Open the app in view mode.

   

2. Use the first application filter, datetime, to limit the date range to the 2010 calendar year. Start on 2010-01-01, end with 2010-12-31.

   Click Apply.

   

3. In the second application filter, category, select the value BAD CHECKS.

   

4. In the third application filter, pddistrict, notice that the value for PARK is missing; there are only 9 policing districts available in the filter.

   This is the result of filtering based on category BAD CHECK and date range 2010-01-01 through 2010-12-31. The resulting subset of data in the dataset does not include rows where pddistrict equals PARK.