Another crime visualization.

In this case using blobs to make the highest concentration areas of 
crime easily visible by making it look like blood - or strawberry
jelly :) - spilled on the map.


Again, advice on how to better convey information or visualize the data 
would be appreciated.

In particular, I want to make the volume of a blob roughly proportional 
to the number or severity of events that occurred inside it; but with 
the blob parameters I can't seem to find an easy way to make 100 events 
have a 10x bigger blob than 10 events without 1x blobs vanishing.  Maybe 
I need a low threshold or something?  I'm not sure.


[PS: the crime data is fake, so just because you see stuff on your house
doesn't mean you should feel in danger]

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