Jon WorthAre SNCF's TGVs too big for Italian tunnels?
The answer: check a map
But the problem: I do not know of a public loading gauge map for all Italian lines
Can anyone point me to one?
Grazie mille! Merci beaucoup!
Oliver Blanthorn@jon https://data-interop.era.europa.eu/map-explorer if you click on a line on this map and then click on a track in the pop-up it will tell you the loading gauge
if you're doing it enough that that's annoying and no-one else has bothered, i can probably hack together a map from the data
@jon i tried it for three different random places in Italy and they all did 🤔
are you definitely clicking on a "track" not not a "line"?
Will Deakin@bovine3dom @jon interesting. Is there an API or download for the ERA track-data?
波鉄 (Hatetsu)@HaTetsu @bovine3dom @jon yeah kind of but it seems to want me to write some kind of RDF triple query. Which is not my jam
@wnd @bovine3dom @jon I think that was Resources > Endpoint, though? Dataset Explorer seems to have, well, per infra manager dataset download links
@HaTetsu their server didn't like it when i asked for loading gauge so i wrote my own xml parser
i think we're getting somewhere. red is more restricted gauge, i think, and blue is less restricted?
if anyone can point me at a 'Gauge=20 => "GB"' dictionary and, even better, a big dictionary of 'my gauge => compatible gauges', i can make a nice map of 'i bought four billion quid's worth of trains now let's see where can i go with them'
@HaTetsu @wnd @jon i thought i would do it the 'right' way and use their SPARQL endpoint
i have suspiciously large amounts of missing data from spain (and the UK?) so i guess i will go back to doing it the wrong way with my handwritten XML parser - especially given the missing line next to ventimiglia that was there in the previous attempt
@HaTetsu @bovine3dom @jon as I understand it, RINF data is published to ERA under the INF TSI regulation. But not GB data, for obvious reasons. Although the INF TSI should still apply in Northern Ireland and data populated.
(The INF TSI has been superceded in Britain by the INF NTSN https://www.gov.uk/government/publications/ntsn-infrastructure
There is a pre-2019 cut of the GB RINF dataset and will see if I can find a copy.)
Noting, I don't know much about the INF TSI nor EC rail regulation in Norway...
@wnd aside from the missing data, poland, hungary and romania all look too perfect. is romania really truly entirely GC gauge?
also, it looks like the mapping i want of national gauges -> international ones only exists in a $500 EN standard - EN 15273-2 - if anyone happens to have a copy on their desk :)
@bovine3dom I would be able to sort this for GB gauges. European ones less so.
@wnd for the UK i had a rummage around the rail data marketplace but i couldn't see an obvious dump of XML about the infrastructure, the track model seemed to more or less only tell you where they were?
@bovine3dom the GB gauging is buried in a bunch of PDF files in the National Electronic Sectional Appendix (NESA). I scraped these here https://github.com/anisotropi4/nesa
Noting this isn't mapped to a geography but could then mapped using the track and waymarks from the track model https://raildata.org.uk/dataProduct/P-9b4e960e-8bb6-438b-9722-34ae5768a48f/overview
@bovine3dom (I should probably refresh this as it's been a while...)
@wnd thanks, but i was expecting to see W2 W7 etc, i thought those were the British classifications of loading gauge?
@bovine3dom @wnd @HaTetsu it’d not surprise me in Romania and Poland had indeed sorted this, yes. They’ve had double deck trains a long time in Romania.
Martin Scheidt@bovine3dom I would love to recreate this map with my students! Is it possible to provide the code via github? I assume it‘s in #julialang? -> which would be great!!
@kaat0 that would be awesome! but as i said there's some deeply weird stuff going on so there are definitely bugs to find :)
all the code is here https://github.com/bovine3dom/route_tchooseur
the "full" map you replied to uses a SPARQL query and DuckDB to make a parquet that i dumped in Kepler and then fiddled with the legend
the smaller map further up the thread is from the wrangler/ folder on that repo and parses the XML itself using Julia, which then gets shoved in Kepler for vis
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@kaat0 i was intending to go back to the Julia method after lunch to see if it solved stuff like the dirittessima apparently missing from the SPARQL results
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you wouldn't happen to have access to EN 15273-2 would you?
what i would really like is some mapping of train loading gauge -> compatible loading gauges of tracks and vice versa
i can sort of hack together national gauge -> compatible international gauges but it would be more satisfying to have national gauge -> national gauge
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@bovine3dom i can have look for EN 15273-2! It might take a while…