OpenGeofiction

Inner Borders

Posted by Tito_zz on 21 November 2017 in English (English)

Hey guys! I need help on making inner borders (like states). I know that there is a tutorial in the wiki, but I don't understand it. Please help.

Location: R4, TA114c

Comment from Toadwart on 21 November 2017 at 12:52

I understand, that learning these things is tricky. But do you expect us to explain it to you now in full detail? I mean, I could copy the tutorial here. Wouldn't help no one.

Maybe you could tell us where you got stuck?

Did you manage step 1: "plan the overall layout of your country first"?

Did you draw them as lines?

Having trouble putting them into relations?

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Comment from LemonKing on 21 November 2017 at 15:02

I got stuck on that for a long time myself, had to read the tutorial many times and learn through trial and error, but I finally figured it out. I can try to explain how I understand this.

First note this: A boundary is technically not an area, but a set of ways grouped in a relation.

The word "relation" can be a bit misleading. Is basically the same as a mathematical "set": https://en.wikipedia.org/wiki/Set_(mathematics)

"Sets" can overlap so that some "objects" are members of two or more "sets". Applied to boundaries: Each "way" that is part of a boundary is an "object", while each "relation" that forms the boundary of an area is a "set", E.g. the entire boundary of the Norwegian region Finnmark is a "set" ("relation"). The part of it which is also a part of the Finnish-Norwegian border is a member of the set, but also a member of other sets, like Norwegian national border, Finnish national border and Finnish regional border of Lappland. So the boundary must be cut into several ways at the intersections of borders of any level mapped.

Only after understanding this comes the practical part of creating a relation. it is first created to one member object, which initially forms a "one-member set". After that, other members can pick up the same relation (=become members of the same set). In other words, a relation is only created once for each administrative area.

If you get my points so far, then look at editor-spesific instructions.

if I explained something wrong, please correct me!

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Comment from Tito_zz on 21 November 2017 at 16:06

@Toadward I have problems with the relations

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Comment from Toadwart on 21 November 2017 at 16:14

Are you using JOSM?

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Comment from Tito_zz on 21 November 2017 at 16:50

But I can if it's easier.

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Comment from isleƱo on 21 November 2017 at 17:59

As stated at the top of the tutorial, these types of boundaries are recommended for advanced users only. New users who play with this stuff often damage their territory boundaries and labels, plus the boundaries and labels of their neighbors.

As also stated in the tutorial, real life borders are established over an underlying landscape, and reflect aspects of that landscape. Drawing borders before the landscape typically gives an unnatural looking result, which can already be seen in the motorways of this country. When borders (or highways) fail to reflect anything about the underlying topography, history, population patterns, etc, the result looks like it was drawn on a blank sheet of paper, not like it grew organically over a realistic geography.

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