Add Italy bidding zones (GeoJSON)

[antifa-ev]

No description provided.

[alixunderplatz]

@antifa-ev Wow, this absolutely made my day/night! 😃😃😃
Awesome, thank you so much!!!!!

Zones all look good to me!
@corradio is there any advantage/disadvantage of having these seperate GeoJSONs compared with "merging the regions the old way" like for the US, Russia etc. in generate-geometries.js?

[corradio]

I think it's easier to maintain if we extract them from Natural Earth instead of having custom polygons.
Also the boundaries between countries might be more robust.
@antifa-ev can you tell us a bit about how you extracted the polygons? Is it the aggregation of Italian regions? In that case it might be simpler to extract them using generate-geometries.js.

Very excited about splitting Italy!

[systemcatch]

Good initiative! When I import the shapes into mapshaper I get a json parse error with IT-SIC, the others are fine.

[antifa-ev]

@corradio I've downloaded the boundaries from OpenStreetMap, reprocessed them (deleted all islands) and simplified them with simplify-geojson.

I could simplify them in a matter, that adjacent boundaries share the same simplification. But this would involve PostGIS, so I would like to avoid it!

And: I've indeed forgotten to fix Sicily.

[corradio]

Hi @antifa-ev,
Thanks for the clarifications. However, do the individual areas correspond to regions? If that's the case, it might be better to use the generate-geometries.js script which will take care of everything for you, and will be more robust.

[antifa-ev]

@corradio What do you mean with do the individual areas correspond to regions?

I've merged Italian administrative regions into network regions, as demanded.

[corradio]

@antifa-ev can you ping me on Slack? It will be easier!

[jarek]

First thing I'm seeing is that these are LineStrings and our other maps use Polygons. That should be a really minor change though.

[jarek]

From second glance, this should be doable from Natural Earth geometries by merging on region_cod, e.g. Toscana is region_cod=IT-52 (and there are several subdivisions of it - Grosseto, Livorno, Pisa, Siena... but they all have the same region_code).

To preview the Natural Earth, download the file http://naciscdn.org/naturalearth/10m/cultural/ne_10m_admin_1_states_provinces_lakes.zip (this is referenced in https://github.com/tmrowco/electricitymap-contrib/blob/master/web/topogen.sh), then upload it to http://mapshaper.org. Using the "i" icon in top-right you can preview properties of the regions.

[jarek]

We might need to extend https://github.com/tmrowco/electricitymap-contrib/blob/master/web/generate-geometries.js#L65 to enable selection by region_cod

[corradio]

Closed in favor of #1604