FR:Assurance qualité

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Voir aussi : Exactitude, Complétude
En cours de traduction, votre aide est la bienvenue ! State as of 2012-08-28. Better start again and re-use the few already translated sections of this and the second page to merge.

Les outils de Quality Assurance vous aident à améliorer la qualité des données osm. Il indiquent soit des anomalies possibles détectées par un logiciel soit rapportés par un humain qu'il est ensuite possible de corriger avec des outils d'édition comme JOSM ou Potlatch

Outils de signalement d’anomalies

These are tools that try to highlight and point out parts of the data that are likely wrong. There are also reports from manual quality checks by humans. In both cases, the reported issues may contain false positives and, when editing, care should be taken to ensure their accuracy. However, they can provide a very valuable visualisation of which areas need attention and can help spot and correct errors.


At OpenStreetBugs (OSB), you can mark and describe bugs in OSM on a map without authentication. Hopefully someone else will notice your bug report and act upon it. OSB Reports contains OSB GPX and HTML files and statistics.


MapDust is a bug tool operated by skobbler, which is also integrated into their turn-by-turn navigation solution, thus originally focusing on navigation-relevant bugs but now serving as a general bug tool. As many of its users may not be aware of OpenStreetMap at all, there are also quite a few non-relevant error reports included, but it does contain many good reports that are not covered by other tools. Currently it is available in English, German, French, Italian, Spanish and Romanian.

Outils de détection d’erreurs

Les outils de détection d'erreurs vérifient dans la donnée OSM l'existence potentielle d'erreurs, d'éléments inexacts ou de zones peu cartographiées. Les utilisateurs doivent vérifier ces objets et les corriger, dans le but que la qualité de la donnée OSM progressent constamment.

Comparaison de quelques-uns des outils qui suivent
Outil Couverture Types d’erreurs Mode d’affichage Suggestion de correction Téléchargeable API Guide de correction
Keep Right Monde Beaucoup (50+) Couche de marqueurs non oui  ? Seulement en allemand
Osmose Monde Beaucoup (200+) Couche de marqueurs oui oui oui oui
JOSM/Validateur Locale Beaucoup List oui - -  ?
OSM Inspector Monde/partiel Beaucoup Carte de rendu non oui  ? non
Maproulette Monde/partiel Beaucoup (10+) Un object à la fois non oui oui non

Keep Right

Keep Right ( shows errors on a map or in list form. It has a system for reporting false positives and for labeling a bug as fixed. It has rules to automatically detect the following error types: non-closed areas, dead-ended one-ways, almost junctions, deprecated tags, missing tags, bridges/tunnels without layer (careful - not always an error), motorways without ref, places of worship without religion, POIs without name, ways without nodes, floating islands, un-tagged railway crossings, wrongly-used railway crossing tag, objects with FIXME tags, and relations without type. KeepRight shows tens of thousands of errors, including many that have little impact (e.g. a stream intersecting a highway: technically a bridge is needed here, but existing renders assume the stream is in a culvert).


Osmose [1] Osmose est un outil similaire et complémentaire à KeepRight.

Il effectue des tests structurels :

  • détection des giratoires qui n’ont pas l’attribut le définissant,
  • sens de circulation dans les giratoires,
  • manque de sens unique de circulation,
  • sens unique en voie sans issue...
  • Tracé approximatif,

Il effectue des tests sur les attributs :

  • vérification des valeurs numérique et des dates,
  • incohérence sur les vitesses et gabarits de circulation.

Le principal avantage d’Osmose est le test à partir de règles spécifiques sur les attributs et valeurs utilisés en France et/ou en langue française. Exemple de ce qui n’est pas couvert par Keepright :

  • les noms de rue (règle des majuscules),
  • la normalisation de l’orthographe, de la ponctuation ou des abréviations ambiguës dans les données à afficher sur la carte
  • les anglicismes,
  • les code INSEE sur communes en France.

Nœuds en doublon

The Duplicate nodes map ([2]) is a tool written by Matt to show all duplicate nodes, i.e. nodes with identical coordinates, on a slippy map. These are particularly prevalent in U.S. TIGER data, and so the map gives a good indication of TIGER fixup progress. There is more information about the tool, and how to fix duplicate nodes on the about page.

JOSM Validator

JOSM/Validator est une fonctionnalité de JOSM qui vérifie les données chargées dans l'éditeur, fait ressortir les erreurs et les avertissements, et peut (à la demande) faire quelques corrections automatiques.

Outils de Gary68

Gary68 has created a whole bunch of quality assurance tools:

WayCheck is a program which checks the OSM data (file) for open ends and crossings. The found positions must be evaluated by a user and he or she can correct the data in JOSM or Potlatch or post a mark in Openstreetbugs. The Waycheck page lists reports generated by the program and any user is encouraged to run reports and correct errors listed on the page and its links. This is especially useful for the quality of routing related data.
MotorwayCheck lists problems related to highway=motorway. Page also shows reports.
osmdiff is a program which compares two osm files and documents the changes in list and map form<!-I hope that's what "writing and drawing" meant-->. Some reports can be seen here: osmdiff reports.
unmappedplaces finds a list of potentially unmapped places. These are reported on the wiki page The query can be run for other countries as well.
Mapping Quality is the successor of unmappedplaces. See the wiki page for the results. You get automatic street directory, KPIs (numbers) per place, maps that show status and CSV files for further processing.
SomeChecks performs some checks: One-way check, Roundabout check, Double-node check (ways), Area Check.
Relation Diff - Differences in relations
Relation Check
Self intersecting way reports

"All" bugs as GPX file

All results from the checks done by Gary68 can be obtained as a GPX file for use in JOSM, etc. These checks mainly cover Germany. Openstreetbugs are covered as well. It is also possible to get data for a bounding box only:

Actual run of quality check scripts from above

Collection of several scripts described above, run on your country. If it is a rainy and wet day and you do not want to go out, fixing these data issues is a useful kind of "armchair mapping" : OSM Quality Assurance

Coastline Error Checker

Coastline error checker ([3]) shows holes and other problems in coastlines.

OSM Inspector

OSM Inspector ([4]) has several views for specific mapping needs.

Public transport validator

ÖPNV-Validator ([5]) checks if a public transport relation has valid tags according the new public transport schema. User:Oxomoa/Public_transport_schema. This schema is now in the voting process for its own validation Proposed_features/Public_Transport.

NoName Map

NoName map ([6]) - Map showing streets with no names updated using minutely diffs.

TIGER Edited Map

TIGER Edited Map ([7]) - Map showing which areas of the U.S. have been edited since the TIGER import.

Coarse Highway

Ragged highways with few points (blog entry): Coarse Highways.

OS Locator Musical Chairs

OS Locator Musical Chairs ([8]) attempts to intelligently match OSM streets in GB against the OS Locator streetname database and show a browsable interface of the results.

Turn Restrictions Analyser

Turn restriction analyser - displays turn restrictions on a map and highlights errors


Maplint is an osmarender configuration for highlighting errors. It used to be prominently available as a layer on the front page, updated by tiles@home.

US Interstate refs

US interstate refs List of ref numbers and corresponding OSM interstates.

Autres outils de validation des données OSM (Layers, par OpenStreetMap France)

Yet another validation tool for osm data (YAVAT) comprend un carte mobile avec des couches en superposition permettant d'aider les contributeurs de trouver des erreurs de données. (initialement seulement pour l'Europe, maintenant avec une couverture Mondiale).

Le service possède des couches pour :

  • les routes sans nom
  • les routes sans ref
  • les attributs fixme ou note
  • le manque de voirie par rapport au cadastre (FR)

Il utilise des test similaire que Osmose [9] mais est basé sur ces tests spécifiques, probablement plus efficaces.

Le meilleur atout de cet outil est la génération en couche coloré et transparentes pour voir les limites administratives par admin_level et bien d'autres limites politique (en France, limites électorale, intercommunales..) mais aussi dans d'autres pays pour les limites non administratives (judiciaire, électorale,..)

L'affichage des secteurs colorés permet un vision rapide et globale des oublis, ruptures, incomplète mais aussi des superposition, duplication des secteur de même type. Afin de trier la visualisation, il suffit de cocher ou non les différents type de vérification voulues.

Voir :

Polygones rompus

[10] - Polygons which present a problem for Nominatim. These ‘broken’ polygons could be where the interior of a multipolygon is disconnected or, where a polygon intersects itself.


housenumbervalidator checks addr:* attributes for duplicate addresses, incomplete addresses, and possibly incorrect street names. Results are displayed on a slippy map. Currently validation is performed for Germany and Austria only, as there are some language-specific checks.

Outils de visualisation


ITO Map [11] is a map overlay service from ITO. The layers cover different data types: Barriers, Buildings and addresses, Car parks, Electricity distribution, Fixme, Former railways, Layers, Metro, Navigable waterways, Railways, Schools, Speed limits km/h, Speed limits mph, Tracktype, Unknown roads, Water.

Outils de suivi

En plus des outils ci-dessus de signalement des erreurs et anomalies,il existe un nombre d'outils qui vous permettent de situer rapidement les modifications erronnées. Par exemple si vous êtes familier d'une zone que vous avez cartographiée scrupuleusement, vous pourriez vouloir suivre tous les changements effectués ensuite sur cette zone et vérifier qu'aucun domage inattendu ni vndalisme ne survient dans cette zone.

Voir aussi :

API v0.6 introduced the concept of changeset. This is a group of edits made by particular user, with a comment. Some new displays have been developed for the web front end:

OpenStreetMap Watch List

OWL (OpenStreetMap Watch List) - Watch what is happening in OSM in a special area.

ITO world OSM Mapper

OSM Mapper - osmmapper is a tool to let you see when an area has been mapped the last time.

Real-time change following

  • LiveEditMapViewerJ is a java program that allows you to follow changes as they happen on a world map.
  • Khtmlib - ticker allows you to follow changes in realtime on a slippy map and get additional data about them.

History Browser

History Viewer

  • OSM History Viewer shows changesets in a visual way, highlighting object positions before and after a given changeset, and also highlighting modified objects that were not moved.

OSM Aware

Historical Coverage

  • Historical Coverage service creates animations of the historical development in a specific area. (service no longer active)


  • UserActivity Statistics and maps of user activity in two osm files. Possibly detect vandalism... Reports (for Germany) generated periodically.

Basic Node/Way History

  • Potlatch_2 List history of selected node and/or ways, and let you contact the mapper. ( Select a node/way, click on advanced, then double-clic on unclicable Way number ).


Outils assistants

Traffic Sign Tool

Traffic Sign Tool - Assistant to get the right tags for German road signs.


QualityStreetMap ([12]) is a large grid for coordinating mapping work. You can select a tile and mark it complete for a specific tag. The grid covers the whole world and any tag. To edit the grid you have to log in with your OSM account. Zoom in to see the grid (min zoom level 12). The service is in beta.


DE:MaxSpeed Karte ([13]) - Map showing streets tagged with maxspeed.

Listes de routes

In Germany we requested different official lists: Straßenverzeichnis.

Statistiques sur les attributs

To compare the use of a tag or to see typos, use these statistical tools. See also: Stats.


Taginfo is a system for finding and aggregating information about OSM tags and making it browsable and searchable.


ITO Map ([14]) is a map overlay service from ITO. It runs scripts that highlight specifics tags which shows how consistent, or not, use of that tag is. It displays groups of related tags simultaneously.


Comparaisons externes

Voir aussi