I've styled some census tract tilesets and set filters in Mapbox Studio, where everything looks fantastic, but I want the tracts to appear shaded irrespective of the zoom level, and Studio won't let me set a minzoom lower than 8. I've tried changing the minzoom after load in javascript:

map.setLayerZoomRange ('ba_percent', 4, 22)

And I see the change reflected if I log


But that doesn't affect what appears in the browser. There must be a way to show census tract data at whatever zoom level I choose, right? Just for reference, this is how the map looks when tracts are shaded.

enter image description here

  • 1
    What is the source of your census tract data? It is possible that there are settings that cannot be overridden. – MaryBeth Mar 18 '16 at 15:21
  • geoJSON files from censusreporter.org. I'm not an expert at reading geoJSON files, but it just looks like a few properties and then geometry for each tract. – rswerve Mar 18 '16 at 15:24
  • The geoJSON file likely has only data to a certain extent, if you wanted to see things at any extent, you would likely need to grab the raw data from the census database and create a js file from that yourself. – MaryBeth Mar 18 '16 at 15:34
  • Huh, I didn't realize it worked that way. Thanks for the tip! – rswerve Mar 18 '16 at 15:36
  • I am not 100% sure how your JSON files are being created, but here is a little background on ArcGIS and why there is a need to limit the amount of data someone can pull at a time from the server, if you are interested: doc.arcgis.com/en/open-data/provider/… – MaryBeth Mar 18 '16 at 15:42

In case anyone else runs into this: I used Tippacanoe to change the zoom limits on my existing geoJSON file. You just have to be careful of your settings or you'll end up with enormous files.

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