I would like to provide heat map visualizations at the US County level. My source includes county ids from every county across the US, but it does not include lat/long data.
There's a great thread here with how to set up custom maps using GeoJSON:
I am able to create a single custom map which includes every US county. However, much like the thread above, the resulting visualization is too small to be useful (without the ability to zoom custom maps).
I am also able to break the GeoJSON into separate files, one for each US state. These can then be added through Admin, and selected withing the visualization settings of a card.
A couple questions:
- Is there any way to dynamically select which custom map file is used in the visualization for a given card in a dashboard? For example, I could add a single-select "State" dropdown to the dashboard. When the user selects a state, I'd like to update the visualization to show that state map.
- Is it possible to dynamically set the path for a custom map? I control the URLs for the custom maps. If I could pass in a state name to the url, I could dynamically select the appropriate state using one custom map.
- Am I missing an obvious, better alternative for displaying aggregate data at the County level?