Ça dépend sans doute des régions, mais les notes qui permettent un interction posteur/correcteur (l’idée dórigine des notes) ne sont pas si rares que ça. On les trouve peut-être moins facilement car elles ont tendance à être corrigées plus vite, mais c’est une bonne chose.

Les notes “pense-bête” sont assez répandues et il n’y a pas de mal à ça, mais à condition d’inclure suffisament d’info pour qu’un autre contributeur puisse faire la manip à votre place au cas où.

À mon avis les notes purement personnelles (même dans un cadre “contibution OSM”) n’ont pas vraiment leur place dans la bdd. Utilisez un autre outil.

Perso, en mode Yaka, les deux fonctionalités que je voudrais seraient un filtrage par date et la possiblité d’indiquer qu’une note a besoin de plus d’info. Ça permetrais de filtrer les nombreux cas ou on ne peut rien faire sans aller sur place ou sans que le noteur réponde à la question.

How does that map (coverage of geolocation-via-cell-towers database) help you find stuff to map ? Are you adding cell towers to OSM ?

Many thanks. I tried to write an ad-hoc gpx-display plugin for Blogger a couple of years ago and gave up after much frustration.

I realistically won’t have time to look at it again for a while, but please put Blogger on your radar of interesting targets (and savour the irony of a Google platform getting OSM support before GM support).

Firstly, just looking at your numbers, I reach the different conclusion that most housenumbers are not tagged on the building way, since “Address nodes that are not on or within a building” is the most freqent case. One can slice and regroup the numbers in various ways, but that case still seems predominant.

The difference in interpretation probably come from your “where possible” wording. But an address node that isn’t on or inside a building doesn’t necessarily mean that the building wasn’t there and therefore impossible to tag directly. One popular convention is to put the address node on the letterbox, and that physical letterbox is often not on the building. Annoyingly, it seems hard to distinguish that case from the “no building way mapped” case.

Secondly, there’ll never be a one size fits all because, the real-world concept of a “housenumber” has various meanings, even before we try to convert it into OSM objects :

• Where snailmail gets delivered (aka the letterbox - a node on the building or outside somewhere)
• Where people knock on the door to visit (aka the main/back door - a node on the building shared with “entrance”=*)
• Where I live (aka the building, or just part of a building - tag the building proper)
• The whole property (including garden, depencencies, etc - an osm way enclosing the whole site)

For native English speakers, watch out for the fact that other languages (such as French) don’t necessarily include the word “house” to describe the concept of a housenumber, so the linguistic bias is different.

None of these real-world meanings are wrong. In fact, they coexist, which is usually solved in OSM by using a relation. I’ve never seen a type=address relation with letterbox/entrance/property/living_space member roles (I haven’t searched), but it would make pedantic sense. It wouldn’t make practical sense however, so instead we see a single one of the meanings adopted seemingly at random, but hopefully in accordance with local mapping conventions.

Pour répondre à la question “est-ce que je peux charger mon véhicule ici ?”, l’important n’est pas “bike/car/etc=yes/no” mais “operator=”, qui informe sur la compatibilité et l’abonnement. Le type de prise (socket:=N) ainsi que “voltage/amperage=*” peuvent aussi s’avérer utile (l’ampérage en particulier indique s’il s’agit d’une borne rapide ou non).

Il y a encore pas mal de flottement sur la manière de tagger ces bornes. Il peut être interessant de regarder des exemples sur overpass. L’ancien tag (fuel:electricity=yes) ne permet pas de donner assez de détails.

I’ll try to close all OSB in my area (Ireland), it’s not too overwhelming. If the bug cannot be armchair-fixed, I’ll just convert it to a note.

It would be great to have a one-click way to “convert” individual OSBs to notes. We didn’t want to bulk-import them, but now that OSB is disabling creation of new bugs, an easy review-one-and-import workflow would make sense.

Bien joué et bon courage :) Tu peux t’abonner au flux rss de tes erreurs, mais comme elles apparaissent comme “nouvelles” à chaque passage de la moulinette ça peut être chiant.

Ça m’a fait bizarre au début de voir des erreurs qui ne sont pas de mon fait arriver dans ma liste; il a fallut que j’ajuste ma définition de ce que contenait la liste. C’est aussi un peu chiant d’avoir des erreurs qui nécessitent une observation sur le terrain alors que je ne faisait qu’une petite correction à distance.

Actually, most GPS handsets do that, but there’s normally an option somewhere to disable the behaviour (because it can be a hinderance even outside of mapping activities).

I’d normally be surprised if the opt-out wasn’t available, but as this is Apple I’m not o sure.

That map really is amazing, there really is somthing to say about 2.5D and cartoon-like graphics for readability. The full-3D osm projects are great, but they somehow manage to be more toy-like than this. Another case of beautiful Vs usable.

I’d love to see an OSM version of that, but we are far from having enough data. OTOH, it seems that very few (if any) buildings in your example have been rendered directly from GIS data : the work is done by an artist each time. We could certainly achieve something close by using a few flexible renderable models and some artistic liberties.

For the record if somebody is reading this : the problematic changesets have been reverted, thanks Mackerski.

Welcome to OSM !

But : copying from copyrighted maps is a No-No for OSM. Even for “factual” things like the name of a street, we are required to avoid copryrighted sources, for legal reasons and because we want osm data to be freely redistributable.

The local map that you got is very probably copyrighted by the Ordinance Survey Ireland, which makes it unsuitable for OSM. When you are not sure about the licence of a data source, it is best to assume the source isn’t usable.

I’m sorry but anything that you maped and isn’t known from a proper source (such as your survey notes, holiday photos, Bing imagery, or GSGS out-of-copyright maps will need to be reverted. Please have a look through your changesets with a critical eye.

If you need help (to revert a changeset or something else), pop over #osm-ie on irc.

How did your GPS fare in those thightly-packed streets ?

I find the best remedy against strange looks is to be more visible, not less. Wear a high-viz jacket, or even a bright-yellow T-shirt with the OSM logo and/or “surveyor” printed on it (many shops offer print-on-textile services). That may not work as well in India where even officials can be looked upon with suspicion, but it should help.

Another thing to do is to print some OSM leaflets to distribute if people ask questions. Turn an akward discussion into an evangelising session :) Evangelising OSM, especially to the not-so-techie population, is still ugely important.

One last thing people do to avoid stares while surveying is to survey during very early morning. That’s too much work for me :p It probably also make you look even more suspicious.

General RSS feeds is on the osmose todo list.

I like it too :) You should mention it on the talk mailinglist.

Other QA tools include http://tools.geofabrik.de/osmi/ and http://osmose.openstreetmap.fr/en/map/ , but I can’t find an RSS feed for them (osmose has an user-based feed, but apparently no bbox-based one).

You need to pay mapbox to see their satellite imagery as a user, on your mapbox map. But like with Bing, OSM contributors have a special permission to use them for free to improve the map.

Taken from JOSM’s default list of available imagery providers, the url is tms[17]:http://{switch:a,b,c}.tiles.mapbox.com/v3/openstreetmap.map-4wvf9l0l/{zoom}/{x}/{y}.png With JOSM you just go to preference, tms/wms, and activate the corresponding entry. I’m not sure what the procedure is for other editors.

Note that OSM itself doesn’t provide or manage satellite imagery. It relies on third-parties that kindly allow us to use their imagery for mapping. Aquiring and processing high-res imagery is a time-consuming and costly business, so it is often not very up to date nor comprehensive.

The most widely used imagery comes from Bing, but there are other providers, from mapbox (who promises low-res but frequently-updated imagery soon) to local sources to self-made shots using DIY balloons or drones. If you ue JOSM, there is a nice pre-made list of existing imagery, and with any editor it is easy to add imagery not in the default list if you know the link. Have a look, maybe some sources are more up to date than Bing for your area.

JOSM (and many other tools, standalone or integrated) Make it easy to correlate a series of photos with a gpx file : right-click on the photos layer, then “correlate”, then choose the gpx file, then adjust the time shift to get all photos at the right place.

As it happens, my camera (lumix dmc-tz20) includes a GPS chip but it is crap, witha granularity of about 1km, unusable for maping. Photos taken from smartphone have the advantage of storing which direction (north, south, etc) you were pointing at. The lat/long is not as precise as with a dedicated GPS device, but it isn’t a big problem for photomaping.

When cycling I just have one hand on the handlebar and another on the camera. I dont go very fast, and I do not shoot every single house. Even if you end up walking and stoping every now and then, the bike is worth it just to get to the mapping location. Some people do video mapping instead, with a sports camera like the gopro. Garmin even unveiled a sport camera with a gps unit recently.

I was never tempted by audio mapping, prefering instead to take pictures (using a small but good/standalone camera, and a treking gps).

The advantage is that you grab all details in one second, instead of 2-3 second per detail with audio. I tend to cycle instead of walk. The disadvantage is that you need daylight and that some residents get suspicious and ask angry questions (but if you brought some OSM printouts, this easily turns into an OSM advocacy opportunity).

I’m currently preparing a complete mapping of my home town’s addresses (population ~9000) by bing-tracing all the buildings before I go (re)survey. I expect fieldpapers will be great to use if buildings are already there.

Lastly, I recently (finally !) ordered a tablet (10.1’), which I hope to use to edit the map during the survey instead of after, making maping both faster and more opportunistic. We’ll see how convenient that is.

I haven’t really formed an opinion on coastline vs boundary. I expect it differs legally from country to country. To me this looks awfully silly and makes me wish for county borders away from the coast, but I can understand the argument that only the country itself, not its constituent counties has sovereignty out in the see. To think that it I’m rowing between those islands I’m in Ireland but not in Mayo nor Connaght feels weird, but I haven’t argued against the established order so far.

Water bodies are difficult to map because their shape changes quickly. Tidal water is the obvious example, but the convention of mapping the high water mark is fairly well established.

Lakes may seem static but they are not. In Ireland we have a lot of turloughs that can swell to hundreds of meters length in a matter of days, stay around for a few weeks or months, and disapear again. Even for an identical “fill factor”, the shape may be different from year to year. This is an extreme case, but all the lakes of the world probably fit between “static” and “turlough”.

So how do you map such a beast ? No one outline will be correct.

• Figure out wether your satellite image was taken during a wet or dry spell.
• Accept the fact that your mapping is going to be subjective, and that different sources (canvec, satellite, ooc maps, etc) will draw a different shape.
• Keep the coastline’s “mean high water” convention in mind.
• Use natural=wetland around the natural=water where applicable.
• Compound all that and use your best jugement.