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Adding Indicators to OSM Map Edits Assessment
Almost two years ago I published a web service that finds suspicious OpenStreetMap (OSM) map changes. You can use the service here and find some more information in previous blog posts. Especially Changeset discussions revealed that they are more or less de facto standard for communication between contributors during map change reviews. However, when I…
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Public profiles on “How did you contribute to OSM?”
The web page “How did you contribute to OpenStreetMap?” (HDYC) provides individual detailed information about project members. Some time ago, the page has been revised, that member profiles can only be accessed, when users logged in with their OpenStreetMap (OSM) user account. This feature has been implemented, after a long…
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Processing compressed OpenStreetMap Data with Java
This blog post contains a summary on how you can write your own Java classes to process OpenStreetMap (OSM) pbf files. PBF is a compression format, which is nowadays more or less the standard utilized for reading and writing OSM data quickly. In the OSM world, many tools and programs implemented this file format…
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Review requests of OpenStreetMap contributors
– How you can assist! –The latest version of the OpenStreetMap editor iD has a new feature: “Allow user to request feedback when saving”. This idea has been mentioned in a diary post by Joost Schouppe about “Building local mapping communities” (at that time: “#pleasereview”) in 2016. The blog post also contains some…
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Who is commenting?
An Overview about OSM Changeset DiscussionsAs mentioned in my previous blog post about detecting vandalism in OpenStreetMap (OSM) edits, it’s highly recommended that contributors use public changeset discussions when contacting other mappers regarding their edits. This feature was introduced at the end of 2014 and is used widely by contributors today. Each and every comment is listed publicly and every…
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Detecting vandalism in OpenStreetMap – A case study
This blog post is a summary of my talk at the FOSSGIS & OpenStreetMap conference 2017 (german slides). I guess some of the content might be feasible for a research article, however, here we go: Vandalism is (still) an omnipresent issue for any kind of open data project. Over the past few years the OpenStreetMap…
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Reviewing OpenStreetMap contributions 1.0 – Managed by changeset comments and discussions?
The OSM project still records around 650 new contributors each day (out of almost 5,000 registered members per day). Some countries (such as Belgium or Spain) already provide platforms to coordinate the introduction to OSM for new mappers. Others use special scripts …
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A comparative study between different OpenStreetMap contributor groups – Outline 2016
Over the past few years I have written several blog posts about the (non-) activity of newly registered OpenStreetMap (OSM) members (2015, 2014, 2013). Similarly to the previous posts, the following image shows the gap between the number of registered and the number of active OSM members. Although the project still shows millions of new…
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Unmapped Places of OpenStreetMap – 2016
Back in 2010 & 2011 I conducted several studies to detect underrepresented regions a.k.a. “unmapped” places in OpenStreetMap (OSM). More than five years later, some people asked if I could rerun the analysis …
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Verified OpenStreetMap contributor profiles?
The reputation of a contributor in OpenStreetMap (OSM) plays a significant role, especially when considering the quality assessment of the collected data. Sometimes it’s difficult …