OpenStreetMap

Pieren has commented on the following diary entries

Post When Comment
4 826 424 "addr:country=DE" 5 months ago

Well, if nobody stops the process, then it's a kind of passive consensus. And this is not a small one, it's about 30..50 million tags, I don't know exactly.

Import du bâti du cadastre du Maine-et-Loire dans OSM 7 months ago

Je note les buts et bonnes intentions. Si j'ai écris ce commentaire, c'est parce que la dernière phrase m'a fait tilté. Je pense que lorsqu'on se lance dans un projet d'import d'une telle ampleur, sans être assuré d'avoir assez de temps pour aller jusqu'au bout, il vaut mieux aller moins vite sur l'objectif final (compléter le bâti du département) et passer un peu plus de temps pour faire l'intégration correctement par commune.
Si le temps (ou l'envie) s'arrête avant d'avoir terminer, il vaux alors mieux laisser dans OSM des communes non importées et des communes importées mais proprement, plutôt que d'avoir importé toutes les communes mais avec beaucoup de problèmes qui restent à corriger derrière et qu'on laisse à d'autres. Le travail d'intégration avec l'existant est une part importante de l'import lui-même (même si c'est pas la partie la plus sexy).
C'est malheureusement avec ce type d'actions que les imports ont très mauvaise réputation au sein de la communauté OSM (ce que je déplore parce que je pense que c'est inévitable pour avoir au final la meilleure carte, ce que nous voulons tous).

Bon mapping,

Import du bâti du cadastre du Maine-et-Loire dans OSM 7 months ago

"vous êtes libre de corriger les imperfections ... A vous de jouer !"

Je trouve ça un peu facile d'avoir créer de nombreuses erreurs comme des routes qui traversent des bâtiments et de dire ensuite "démerdez-vous". Lorsqu'on fait un import, cela implique aussi la responsabilité de l'intégrer avec l'existant. Et cela implique aussi de corriger la position des routes déjà mappés. Sinon c'est de l'import bourrin. Personnellement, je n'hésiterais pas à faire des reverts et demander un blocage du compte si je constatais un tel comportement dans mes zones d'intérêt.

New users shouldn't be allowed to delete a lot of data 7 months ago

-1 If it's "non-editable", then it has nothing to do in OSM. Create a mashup with external data if you are not happy. Admin borders are changing anyway, it shall be possible to modify them and I dont want to see a new elitist caste of super-contributors in OSM. And what after borders ? motorways ? place names ? population ? coastline ? bus routes ? etc... What we need more is QA tools monitoring the quality of the data in general. Special tools are already checking admin borders and coastline.

+1 to create a status of 'new contributor' with reduced write access to the db. But this should be limited in time (e.g. max. 3 days of contributions).

Über Imports 8 months ago

Your example in France is outdated:

http://www.openstreetmap.org/#map=17/43.95028/0.37758

Don't copy others complains withtout rechecking ;-)

And I see no issue of importing buildings before tracing highways. Nothing in OSM is forcing a priority in features mapping. If you want to start with roads, good for you. If someone else wants to map postbox, forest, fire hydrants or buildings before any roads, why not !? ^^

Happy mapping

new useful proposal 8 months ago

For history, just remember that the wiki page has been create a 1st april -> April Fool's joke

highway=bus_stop - Mappen für den Renderer 8 months ago

Problem with public_transport is a birth defect : since its first porposal and during approval process, it was never clearly asking to deprecate "highway=bus_stop" for the simple reason that the new solution was more complex than the previous one for simple bus stops and the submitters knew they would fail in such way (by experience, all proposals starting with "depecrates this and that" are always slaped by responders).
The PT is nice for complex stations and multimodal connections. It's also nice when you map PT networks from the operator point-of-view. But it is too complicate for the simple contributor who just care about a simple bus stop/halt.
My proposal : keep simple scheme for simple stops, "bus_stop" for a bus stop, "tram_stop" for a tram stop. And switch to the PT scheme for complex/multimodal cases only.

highway=bus_stop - Mappen für den Renderer 8 months ago

+1 with Richard's comments.

I mapped several bus stops as a public transport (PT) user in the past but I stoped with the new tagging approved. See why:

The old scheme (ignore all optional/common tags like 'name', 'operator', 'ref', etc):
1 node where PT users are waiting + 1 tag ("highway=bus_stop")

The new scheme:
1 node where PT users are waiting + 2 tags ("public_transport=platform" + "bus=yes")
1 node where the vehicle itself stops + 2 tags ("public_transport=stop_position" + "bus=yes")
1 relation "type=public_transport" + "public_transport=stop_area"

The new scheme is nice for complex cases, especially stop areas mixing several types of transportation (e.g. tram+bus). But this is painfully over-complicated for the ~95% simple bus stops. How can you convince newcomers that 2 nodes, 1 relation and 6 tags is "better" than 1 node + 1 tag ?

OpenStreetMap Isn't All That Open, Let's Change That and Drop Share-Alike 8 months ago

If the NYC government wanted to copy buildings that have changed from OpenStreetMap to the NYC building dataset they couldn't as their data needs to remain in the public domain.

In the other way, if OSM license becomes PD, it will not be be possible to import data sources others than PD themselves. And many public data in Europe still gets some licenses which are ODbL or compatible but not PD.

OpenStreetMap Isn't All That Open, Let's Change That and Drop Share-Alike 9 months ago

Well, I'm not a lawyer but ... I agree with Bart about legal expertise. The argument saying "odbl is complicated, move to public domain" is true in first part but is not enough for promoting the second. OSM could be more widely used if we (or the foundation) could provide a better support to developers, projects or companies questions about the license (better than "I'm not a lawyer but ..").

Remove a spam user in French 9 months ago

Reporting something on trac doesn't required power-users expertise. Between some hypothetical "easy reporting in one-click tool" and nothing, the "trac" tool already exists and the process of using it could be set-up quickly.

Remove a spam user in French 9 months ago

Do we really need a new reporting system ? we could reuse the trac tool with a special category "spam"

Mapbox and the lake of attribution to OSM 9 months ago

I checked again Mapbox site because we find at regular intervals online maps on the web with Mapbox/OSM in background layers but the OSM attribution is most of the time missing (see my previous blog). I think that Mapbox is not informing their potential users about the attribution. Otherwise I cannot explain why it is so often missing.

The wrong side of mapping transient events in OSM 9 months ago

Perharps we should distinguish a permanent attribute (e.g. "access=no" because it's always 'no') to a temporary attribute ("access=no" because the road is repaired), not by using sub-tags like "start/end_date" which doesn't say which attribute/s is/are temporary, can be easily ignored by data consumers or never updated by the contributors but with a special namespace which would be automatically destroyed at a planned time (a bot). Something like "transient:access:=no". It should be all defined in a single tag, including its validity period (a time duration or a date), to avoid incomplete information (which could be the case if you split the details in 2 or more tags).
Advantage of this method is that permanent attributes are clearly separated from the transient ones. Data consumers could decide to take into account the transient details or not in their use. For instance, a car navi system could ignore the "transient:*" tags in OSM (or just the ones covered by the validity period) but a disaster map renderer could highlight all these "transient:" atributes in his rendering style.

The wrong side of mapping transient events in OSM 9 months ago

disasters which by definition is transient

We don't map disasters but the consequences of disasters. A collapsed building is something more than "transient" I guess. But some tiles of a roof damaged by wind which can be quickly repaired is more "transient". Add an "end_date" tag doesn't help since no one is able to predict the future (for instance, damaged buildings can be just repaired or renovated or fully rebuilt from scratch). "start/end_date" should be reserved for dates in the past. My concern is more about access tags which have a possible long term impact on offline copies e.g. in small devices like navi systems. Also some contributors are just attracted by the project when "events" are widely present in the media. But once the rescue teams and TV reporters are gone, the armchair mappers are just leaving the "transient" data.

How to add batch watermarks to video? 9 months ago

spam

How to watermark an image by time settings? 9 months ago

spam

Ajouter des adresses avec JOSM 9 months ago

Oui, ça peut s'améliorer.

OSM mapping at regional or national scales: aiming at creating consolidated reference layers / La cartographie OSM à échelles régionales et nationales : l'objectif de créer des couches de référence consolidées 9 months ago

This attempt to map by "areas of interest" instead of "by zone" is not new. For a long time (and even today), it has been organized in the wiki itself, with tables where users can subscribe and later, with special icons showing the progress. Some hints:

http://wiki.openstreetmap.org/wiki/Mapping_projects

http://wiki.openstreetmap.org/wiki/Category:Projects

http://wiki.openstreetmap.org/wiki/Special:WhatLinksHere/File:State_Car2.svg

Ajouter des adresses avec JOSM 9 months ago

Le problème des ter, bis, c'est qu'il y a aussi des rues avec des A, B, C. Il faudrait donc 3 commandes : une pour les numéros normaux, une pour les bis, ter et une pour les a, b, c. Le tout devrait aussi être configurable suivant les préférences des contributeurs : "25 bis" ou "25bis" (espace), "25 t" ou "25 ter" (raccourcis), "25 Bis", "25 bis" (majuscule). Bref, beaucoup d'options mais rien d'insurmontable.