update transit map, using S-Bahn interactive network map?

a2 commented 6 years ago

I would love to make a PR that updates the U3 line to Warschauer Str. but I don't know how this all works. Is there a guide for proposing updates to the JSON file?

derhuerst commented 6 years ago

Some context: I chose the JSON to ensure maximum reusability for bvg-topological-map. With the given markup, both SVG-native tools like browser libs can render SVG from it, but other tools can convert it into other formats like PostScript, because SVG path strings are well-supported.

Unfortunately, there is no guide currently. I guess it comes down to how much time you want to invest.

This repo is AFAIK the only machine-readable representation of the BVG transit map, so it's worth a lot to keep it up to date! However, the existing JSON file is the result of a time-intensive manual process:

download the transit map as a PDF
import in Sketch.app, which converts it to a SVG-like tree
clean it up: remove labels, logos, etc
join line shapes that are split into pieces, put their path definitions into the right order
tag all stations with their station IDs, using vbb-stations-cli
export as SVG
transform into JSON
optional: add special information like wifi

Repeating this process would yield a JSON file known to be up to date, but updating the JSON directly to reflect the changes seems more realistic. You would have to convert the JSON into SVG, edit it and reflect the changes back into the JSON file.

As documented in vbb-map-routing#3, I had started to update this repo to the latest transit map a while ago, but have stopped since, because I don't have enough time right now.

derhuerst commented 6 years ago

If you can think of a more straightforward way to keep this repo up to date, let me know!

derhuerst commented 6 years ago

Do give you an impression about the time required: It took me about 6 hours to take the official transit map through the whole process.

derhuerst commented 4 years ago

S-Bahn Berlin has published an interactive network map which has rasterised layers for all stations & lines. Let's see if we can reconstruct vector data from that!

derhuerst commented 4 years ago

BVG has a new transit map, with the connected U5.

creativecreatorormaybenot commented 2 years ago

S-Bahn Berlin has published an interactive network map which has rasterised layers for all stations & lines. Let's see if we can reconstruct vector data from that!

@derhuerst did you end up experimenting with that?

derhuerst commented 2 years ago

No, I haven't worked on this so far. You're very welcome to do so if you want.

derhuerst / bvg-topological-map

update transit map, using S-Bahn interactive network map? #7