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Lighthouse Map
- divbzero 5y agoTIL: Modern lighthouses no longer have a rotating light source. The “flashing” light is actually flashing. [1] [1]: https://www.govtech.com/dc/articles/north-carolina-lighthouse-enters-the-modern-age.html https://www.govtech.com/dc/articles/north-carolina-lighthous...
- irrational 5y agoAnyone have any idea why the dataset doesn't include any the lighthouses along the Oregon coast? It has ones in California and Washington, but nothing for Oregon. Strange.
- mtmail 5y agoThere's open issues for several US states https://github.com/geodienst/lighthousemap/issues https://github.com/geodienst/lighthousemap/issues Could simply be that the Overpass API query timed out for those regions.
- Naga 5y agoThanks for sharing that. My first thought was that there were none on the Great Lakes, which there's already an open issue for as well.
- johnsonap 5y agoLots missing in NC as well
- greggman3 5y agoeven ones in California are missing. For example this one: https://www.google.com/search?q=Point+Vicente+Lighthouse https://www.google.com/search?q=Point+Vicente+Lighthouse Still very cool. Not complaining. Just passing on info :)
- ramoz 5y agoWas hoping to see more on the U.S. east coast
- salaloquy 5y agoA bunch of Oregon lighthouses exist in OSM but they don't have specific data about the signal sequence yet so they aren't displayed on this map. (an example of a sequence would be 0.5+(3.5) which means the light is shown for 0.5 seconds and eclipsed for 3.5 seconds) From the README: "it asks the Overpass API for all elements with an seamark:light:sequence attribute" If you run the query here you'll see that there's not any lights with sequence data in Oregon yet. https://overpass-turbo.eu/s/1fnZ https://overpass-turbo.eu/s/1fnZ If you run a new query you can find that there are plenty of lights on the OR coast with other attributes. (try searching for: "seamark:light:character=*" for instance) I looked at some US coast guard data and found that while most light houses have data on the colour, characteristic, and period, it's rarer to have sequence data. I think for most purposes, just knowing that there's a white light that flashes every 4 seconds is good enough. Knowing that the light flashes for 0.5 seconds is probably less needed (unless you're making a map visualization) If you really want to see the OR lighthouses you could find and add sequence data to lighthouses in OSM. Or you could fork this and write some code to visualize the lights that have some data (like colour and period) but not sequence, by making some assumptions/default values.
- madengr 5y ago
- greenflag 5y agoWould love to know why Norway has so many lighthouses / "blinking beacons". Wikipedia lists many [0], but not as many as shown. [0] https://en.wikipedia.org/wiki/List_of_lighthouses_in_Norway https://en.wikipedia.org/wiki/List_of_lighthouses_in_Norway
- dtlanghoff 5y agoIt seems to include a lot of sector lights. Here is the nautical chart: https://norgeskart.no/#!?project=norgeskart&layers=1008 https://norgeskart.no/#!?project=norgeskart&layers=1008
- lb1lf 5y ago-That it does, I zoomed in on my local area (I can see five sector lights just from my office window on the northwestern coast of Norway - they're all over the place!) - all are present in the map. I love this map; would be even better if one could set opacity for the lights so that it is simpler to see the coastline details, though.
- Ma8ee 5y agoIsn't a sector light a type of lighthouse?
- guerrilla 5y agoMaybe they just have provided more detailed data? Then again, Norway has a very rugged coast which is used a lot.
- dylan604 5y agoI was going to suggest it might have something to do with all of the fiddly bits that were a favorite of Slartibartfast.
- Stevvo 5y agoIt's because Norway made a conscious decision to maintain its lighthouses. It's done to preserve the cultural legacy as the majority of lighthouses are obsolete.
- ogazitt 5y agoVery cool visualization, but the underlying dataset is very Euro-centric.
- themusicgod1 5y ago
- trimbo 5y agoIs this at all accurate? San Francisco has dots in random places. But, to me, the most obvious missing lighthouse is the Montauk Point Light.
- godzillafarts 5y agoVery cool. One thing I noticed on mobile - if you pan far enough in either direction such that the tiles end up wrapping / repeating, you lose all of the map markers.
- mmaunder 5y agoFirst light I checked, and have verified in real life, is missing. Patos Island light on the Canadian border in the San Juan island group. Cute, but inaccurate. https://keepersofthepatoslight.org/about-patos-island https://keepersofthepatoslight.org/about-patos-island
- hyperhopper 5y agoSame, the Makapu‘u lighthouse on Oahu, Hawaii, seems to be missing.
- echelon 5y agoThe site is missing lighthouses all up and down the eastern US seaboard, but perhaps they'll take a few pull requests. https://en.wikipedia.org/wiki/Harbour_Town_Light https://en.wikipedia.org/wiki/Harbour_Town_Light https://en.wikipedia.org/wiki/Cape_St._George_Light https://en.wikipedia.org/wiki/Cape_St._George_Light https://en.wikipedia.org/wiki/St._Simons_Island_Light https://en.wikipedia.org/wiki/St._Simons_Island_Light https://en.wikipedia.org/wiki/Tybee_Island_Light https://en.wikipedia.org/wiki/Tybee_Island_Light https://en.wikipedia.org/wiki/Ponce_de_Leon_Inlet_Light https://en.wikipedia.org/wiki/Ponce_de_Leon_Inlet_Light https://en.wikipedia.org/wiki/List_of_lighthouses_in_Florida https://en.wikipedia.org/wiki/List_of_lighthouses_in_Florida
- was_a_dev 5y agoIt is an European project, it is to be expected
- ygra 5y agoData is from OpenStreetMap, so just add it there (which incidentally benefits all data consumers instead of just one single map). Note though, that Wikipedia is not a compatible source for OSM data; the licenses are incompatible.
- groby_b 5y agoSame for Wangerooge, Neuer Leuchtturm. Granted, there's a blinking thing a few dozen miles of in the North Sea instead.
- mutant 5y agoHuh, nothing on Great Lakes.
- cjensen 5y agoLooks like this is a work in progress. All the nav markers on buoys seem to be in place for the SF Bay, but none on the coastline or in Oregon. But hey, looks like it's on GitHub for anyone to submit patches.
- londons_explore 5y agoThe data comes from openstreetmap, so send your data there.
- cozzyd 5y agoMissing the Chicago Harbor Lighthouse...
- ragebol 5y agoSeems to be quite Europe focussed, but then again 'Dienst" is Dutch for "Service". It's a project of the university of Groningen [0] [0] https://www.rug.nl/society-business/centre-for-information-technology/research/services/gis/ https://www.rug.nl/society-business/centre-for-information-t...
- jamessb 5y agoThe README [1] says it is using data from OpenStreetMap, fetched with the Overpass API. [1]: https://github.com/geodienst/lighthousemap https://github.com/geodienst/lighthousemap
- ragebol 5y agoYep, saw that. Then I wonder: why are those attributes (seamark:light:{sequence, range, colour}) filled more often for lighthouses in Europe?
- ygra 5y agoOpenStreetMap in general seems to have way more contributors from Europe: https://www.osmstats.neis-one.org/ https://www.osmstats.neis-one.org/ But in this case perhaps much of that data came from a data import that didn't have compatibly-licensed data for the US.
- MrGilbert 5y agoTIL that German and Dutch share the same word for "Service". :)
- ragebol 5y agoThere's many such words, since the languages share a common root. I'm Dutch but work for a German company and the main language is English. If we can't find a word, typically stuff not core work related, it's often quickest to say the German or Dutch word.
- fergonco 5y agoI would make the point size dependent of the scale. When I zoom in I get huge balls. And I would make them not blink.
- pqs 5y agoThey blink as they blink in reality. This is the point of the map.
- thombat 5y agoThe size of the points shows the reported visible range, the colour and pattern of blinks represents how the light should appear. But this all depends upon the OSM data being entered correctly, and as https://github.com/geodienst/lighthousemap#readme https://github.com/geodienst/lighthousemap#readme notes: "contains my best guess on how a light sequence will look based on these descriptions. However, it might be inaccurate, and it tries to do its best with the sometimes not entirely consistent data from OSM."
- trhoad 5y agoNice idea but could do with a key. Why are some bigger? What do the colours mean? What's the blinking about?
- jamessb 5y agoIt is a very literal encoding: the colors are the actual colors of the lights (unless you uncheck the "Show real colors" checkbox), they flash in the same pattern as the actual lights, and the radius of the circles is proportional to the nominal visible range (but I think they are smaller than the actual range [1]). [1]: https://github.com/geodienst/lighthousemap/pull/9 https://github.com/geodienst/lighthousemap/pull/9
- ygra 5y agoConsidering they're circles on a Mercator projection, they can't be the actual range, or at least they'd be off in at least one direction.
- jamessb 5y agoYes, but they're relatively small so circles are not too bad as an approximation. The Leaflet.Geodesic plugin can render (polygonal approximations to) geodesic circles correctly. Based on playing around with this demo [1] (drag the central marker to reposition, and drag the outer marker to resize), I don't think the deviation from circles would really be noticeable for most of the lights. (Edit: some lights may only be illuminated in a particular sector, and there may obstacles blocking the view in some directions - arguably both of these are far more significant problems with the use of circles as markers) [1]: https://blog.cyclemap.link/Leaflet.Geodesic/circle-interactive.html https://blog.cyclemap.link/Leaflet.Geodesic/circle-interacti...
- trhoad 5y agoOh nice! I thought there was some deeper meaning.
- mark254 5y agoEven some on the Danube - in the middle of Europe...
- AlgorithmicTime 5y ago
- pmdulaney 5y agoRecommendation: Keep the sizes of the circles constant as one zooms in.