Merge pull request #146 from Appsilon/kamil.build-for-windows

Prepare for the 1.1.0 release
Appsilon · Jan 24, 2021 · 747bd95 · 747bd95
2 parents a8d8be4 + ca7333c
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diff --git a/DOWNLOAD_MAPS.md b/DOWNLOAD_MAPS.md
@@ -4,14 +4,25 @@ Use [Overpass Turbo](http://overpass-turbo.eu/), an interface for the OpenStreet
 You can run queries using [Overpass QL](https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_QL)
 and export results in `.geojson` format.
 
-The following query was used to create `map-sources/africa.json`:
-
+Download national borders and parks for 6 Central Africa countries using the following query:
 ```
-area["ISO3166-1"~"GA|NG|CM|CG|CD|GQ"]->.a;
+area["ISO3166-1"~"CD|CG|CM|GA|GQ|NG"]->.a;
 (
   nwr(area.a)[boundary=administrative][admin_level=2];
   nwr(area.a)[boundary=national_park];
   nwr(area.a)[boundary=protected_area];
 );
 out geom;
 ```
+
+Afterwards, you download the national borders for the remaining African countries
+(in batches, to fit in API quotas):
+```
+AO|BF|BI|BJ|BW|CF|CI|CV|DJ|DZ|EG|ER|ET
+GH|GM|GN|GW|KE|KM|LR|LS|LY|MA|MG|ML|MR
+MU|MW|MZ|NA|NE|RE|RW|SC|SD|SH|SL|SN|SO
+SS|ST|SZ|TD|TG|TN|TZ|UG|YT|ZA|ZM|ZW
+```
+
+Lastly, use [geojson-merge](https://github.com/mapbox/geojson-merge) to merge the files and
+[mapshaper](https://mapshaper.org/) to simplify the polygons and decrease the file size.