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Hot spot effect

August 10 2009 | 0 comments
Categories: Symbology


I'm trying to come up with a hot spot map but it doesn't show the data the way I want it to be shown. Please see attached. The points are companies. I want to show dark spots where the company density is high. But the map show lighter areas where the density is the highest. I know that the data might not be best to use with the Hot Spot analysis tool since the data is not random. What other tool can I use with demographic data to show this effect? The Business Analyst Challenge maps at the annual conference used this effect using demographic area. How was that done? I can do a spatial join of companies with census tracts or counties but then I don't know how to show this visual effect. Help please.

Thank you.

Mapping Center Answer:

I think all you need to do is flip your color ramp:

  1. Open layer properties and show the Symbology tab.
  2. Look for the Invert checkbox (just below the Histogram button) and change it.



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