Splatter: The GEDCOM Population Distribution Heatmap

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Mapping your world

I love it when I find a new and exciting way to view my genealogy data, especially when it provides a unique perspective into the relationships between people and the places they lived. Splatter: The GEDCOM Population Distribution Heatmap is the latest in my suite of free online genealogy tools. It will Splatter all the locations in your database across the face of a fully featured Google Map.


In Splatter, location markers are grouped into clusters and the total number of persons found within that cluster displayed inside the cluster icon. These clusters are also represented on the surface of the world as a heat map. This initial view gives a great overview of the world wide distribution of the people in your database. Zooming in exposes location markers. Hovering over these displays a conversation bubble with the list of persons found there.

Leave a Comment
  • Tim Forsythe
    16 Jan 2014

    Jim, if you are looking that kind of detail, you can run Adam or Twigs. As long as the Generations/A-List tab is enabled, an Ancestors Distribution List will be generated for each person and will appear on their profile page. I do not support a descendants only version.

  • Jim Rohrer
    16 Jan 2014

    Tim-How do I limit the map to just part of the data base, such as descendants of a particular person or ancestors of a particular person? This would connect your A list to splatter or the D list to splatter.

  • Tim Forsythe
    27 Jun 2013

    Kenneth, when you run Splatter or any of the other tools, the link to the resulting report is generally permanent and you could link to it. I try not to delete these, but there are occasionally style sheet changes that might occur make older reports not look so well. I also may flush them for other reasons so links are tenuous. You could download the report using your browser. If you do so, download the entire webpage so that icons, stylesheets and scripts are included. Since the page uses WordPress for its headers and footers, a lot of chaff might be downloaded. You could manually strip these after download and replace with your own h&f, but that is a lot of work.

    The best option is to use Adam to create a downloadable website. You can disable the pages you do not want.

  • Kenneth Marks
    27 Jun 2013


    Is there any way to save the map or get a link so that it can be embedded in a Family History website?

    Nice work!