How can I create a Google Visualization intensity/heat map using a KMZ document?

Question

I'd like to create a Google Visualization API intensity/heat map based on UK counties.

To do this, it appears that I need to use a custom KML/KMZ file that contains the county mapping data (which I've located).

Could anyone provide me with a sample of how I can display an intensity map based on a KMZ file? I know how to display Google Visualization intensity maps in general. I just can't find any examples that use a custom KMZ file.

Answer 1

You can take a look at our free-for-now service:

diffent.com/heatmap

we use just lat/long/data triples, and you can just paste your data into our site

or if you like we have JavaScript and PHP examples if you like to code

no KML is needed or KMZ...just raw data