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I have many polygons that represent search areas of different people. By intersecting all that areas I want to get density map - 1 person searched in this area, two in that area and so on.

My trouble is that I have >5k geoJSON polygons and I need to intersect all of them. Is there a way to do it R's sf package or (less preferably) in ArcGIS?

Artsiom Sakharevich
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    I assume this is possible. A small sample of data would help. Please make your question reproducible. – Wimpel Mar 18 '19 at 15:16
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    Yes, it is possible. Please share a small reproducible example. If you need help on how to do that, see [here](https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example). – Roman Luštrik Mar 18 '19 at 15:38
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    See the last plot [here](https://r-spatial.github.io/sf/reference/geos_binary_ops.html). You just need to have a `sf` polygon object. If those >5k polygons are in one `geoJSON` file, then it should be as easy as `mysf = sf::st_read("/path/to/my_polygons.geojson")`. – TimSalabim Mar 18 '19 at 20:49
  • This might help? https://stackoverflow.com/questions/57010155/intersection-of-polygons-in-r-using-sf – damo Jul 19 '19 at 10:46

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