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Update Creating GeoJSON Files from Census Geography authored by Josh Wier's avatar Josh Wier
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Creating-GeoJSON-Files-from-Census-Geography.md
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...@@ -38,6 +38,6 @@ Choose "Simplify" from the top toolbar. You can play around with what algorithm ...@@ -38,6 +38,6 @@ Choose "Simplify" from the top toolbar. You can play around with what algorithm
This will give you a slider that you can use to visually find the highest acceptable level of simplification. The percentage shown by the slider is the percentage of points retained — so a rough proxy for file size. If you find this a little arbitrary, you could open the console and run the [`-simplify` command](https://github.com/mbloch/mapshaper/wiki/Command-Reference#-simplify) with its `interval=` option, which lets you specify a tolerance in meters (presumably that means square meters for Visvalingam) or latitude/longitude degrees. This will give you a slider that you can use to visually find the highest acceptable level of simplification. The percentage shown by the slider is the percentage of points retained — so a rough proxy for file size. If you find this a little arbitrary, you could open the console and run the [`-simplify` command](https://github.com/mbloch/mapshaper/wiki/Command-Reference#-simplify) with its `interval=` option, which lets you specify a tolerance in meters (presumably that means square meters for Visvalingam) or latitude/longitude degrees.
![image](uploads/bf24a5e06fd8fdcaaeb5e2eaad72c1c1/image.png) ![image](uploads/14cae738ad72d32bd54eed95675a9226/image.png)
Once you're done, hit "Export" and choose "GeoJSON" as your format. Once you're done, hit "Export" and choose "GeoJSON" as your format.