The map below is of course an interactive viz. The rest of the tabs are web pages from the census website which describe the sampling methods, the field names, etc.
Relatively depressing information, overall...
Tuesday, August 28, 2012
Thursday, August 9, 2012
Step 1: Enter a Seattle address to see 911 calls near that address
When you drill into a particular 911 call, look for the blue link in the tooltip to the incident report. This will take you to a Seattle Police website where once registered, you can pull up the incident report. If you get "no report available" it means no report was filed for the 911 call - this is a very normal result.
View source on this page to see the code I used to trigger the call to the Tableau viz. On the sending end, I used the google maps API to retrieve the latitude and longitude given a street address. On the receiving end inside of Tableau, we have parameters for latitude and longitude which can receive input from the URL. Finally, we have a mercator equation which allows you to specify a desired distance from your original address (download the workbook to see that calc).