In this example, what is `screen` and `france`? ``...

# data2viz

[nwh]

In this example, what is screen and france?

val franceMercator = Geo.Projections.Mercator {
    fixExtend(screen, france)
}

I have the entire world as a GeoJsonObject so I'm not sure if I should be passing just a GeoJsonObject representing France or not (and if so, how would go about obtaining an object representing just France)

EDIT: Okay, something I've noticed that is slightly related:
When a JacksonFeature is converted to a Feature (that is, a GeoJson one), all property and id information is lost.

// toGeoJsonObject.kt line 47
private fun JacksonFeature.toFeature() = Feature(this.geometry!!.toGeoJsonObject() as Geometry)

Oddly, the Feature constructor has an id field, but it's not used. This applies to other JacksonXYZ -> XYZ conversions as well. This is kind of annoying because it would be trivial to preserve the information. Should I PR a fix for this?

[gaetan]

I didn’t have the time to work on these serialization features yet, so any your PR is welcome. https://github.com/data2viz/geojson-kotlin/issues/5