docs: Add GeoArrow to supported formats (#2503)

Signed-off-by: Daniele Santini <danysan95@gmail.com>
keplergl · Jan 27, 2024 · ac0d357 · ac0d357
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diff --git a/docs/user-guides/b-kepler-gl-workflow/a-add-data-to-the-map.md b/docs/user-guides/b-kepler-gl-workflow/a-add-data-to-the-map.md
@@ -24,7 +24,8 @@ Geometry coordinates should be presented with a geographic coordinate reference
 ## Supported File Formats
  - [CSV](#csv)
  - [GeoJSON](#geojson)
- - [kepler.gl Json](#kepler-gl-json): exported from kepler.gl. See [export map](https://github.com/keplergl/kepler.gl/blob/master/docs/user-guides/k-save-and-export.md#export-map-as-json)
+ - [GeoArrow](#geoarrow)
+ - [kepler.gl Json](#keplergl-json)
 
 
 ### CSV
@@ -190,6 +191,13 @@ kepler.gl will read styles from GeoJSON files. If you are a GeoJSON expert, you
 }
 ```
 
+### GeoArrow
+
+[GeoArrow](https://geoarrow.org/) file, a binary data format which can be visualized with the [PolygonLayer](https://docs.kepler.gl/docs/user-guides/c-types-of-layers/e-polygon).
+
+### kepler.gl JSON
+
+JSON file exported from kepler.gl. See "[Export Map as JSON](https://docs.kepler.gl/docs/user-guides/k-save-and-export#export-map-as-json)".
 
 ### Load Map Using URL
 

diff --git a/docs/user-guides/c-types-of-layers/e-polygon.md b/docs/user-guides/c-types-of-layers/e-polygon.md
@@ -1,11 +1,8 @@
 # Polygon
 
-Polygon layer can display [GeoJSON](https://tools.ietf.org/html/rfc7946) features. GeoJSON supports the following geometry types: `Point`, `LineString`, `Polygon`, `MultiPoint`, `MultiLineString`, `MultiPolygon`.
+Polygon layer can display all geometry types defined by [RFC 7946 (GeoJSON)](https://tools.ietf.org/html/rfc7946): `Point`, `LineString`, `Polygon`, `MultiPoint`, `MultiLineString`, `MultiPolygon`. 
 
-kepler.gl supports all the GeoJSON types above. You can pass in either a single [`Feature`][features] or a [`FeatureCollection`][feature_collection]
-
-[feature_collection]: https://tools.ietf.org/html/rfc7946#section-3.3
-[features]: https://tools.ietf.org/html/rfc7946#section-3.2
+You can load a GeoJSON file (with a single [`Feature`](https://tools.ietf.org/html/rfc7946#section-3.2) or a [`FeatureCollection`](https://tools.ietf.org/html/rfc7946#section-3.3)) or a GeoArrow file.
 
 
 ![GeoJSON layer](https://d1a3f4spazzrp4.cloudfront.net/kepler.gl/documentation/image20.png "GeoJSON layer")