Work on northern italy map

README.md

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+# Maps for Jet Lag: The Game
+
+## Useful things to know
+
+### Overpass Turbo
+
+https://overpass-turbo.eu/
+
+Can be used to query literally any kind of thing from OpenStreetMaps.
+The wizard can be used to generate API queries in a human-readable-ish way.
+e.g. you can search for `"Railway Route" in italy` and it'll make a query for you.
+
+Sometimes the queries miss stuff. The above query won't actually get all the train routes.
+
+If you see that your query misses someting (e.g. a railway), you can go to https://www.openstreetmap.org, find that railway, and inspect it to see what you can search for. 
+
+### Map base layer
+
+You can use Carto as a base layer in QGIS.
+`Web` -> `QuickMapServices` -> `Carto` -> `Positron`
+
+### Masking the map
+
+Use the `Mask` plugin.
+
+Select a polygon using the `Select Features by Area or Single Click` tool in the toolbar.
+Set it as the mask in the plugin menu.
+
+You can combine different polygons using e.g. `Vector` -> `Geoprocessing Tools` -> `Clip`

italy/train stations.overpass-turbo.txt

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+/*
+https://overpass-turbo.eu/
+This has been generated by the overpass-turbo wizard.
+The original search was:
+“"Train Station" in italy”
+*/
+[out:json][timeout:25];
+// fetch area “italy” to search in
+{{geocodeArea:italy}}->.searchArea;
+// gather results
+// exclude subways because they are apparently train stations.
+// TODO: are there other kind of "Train" stations we want to exclude?
+nwr["public_transport"="station"]["train"="yes"]["subway"!="yes"](area.searchArea);
+// print results
+out geom;