This month I tried something new. But first we will start with the usual monthly stats of the OSM Inspector Routing for Europe, this time for the middle of February 2011. Overall the following amount of errors appears for “Europe”: Unconnected Roads: ca. 107000 and Duplicate Ways (number of duplicate segments): ca. 109000 (in the OSM Wiki you can find more information about the error-types). This means that altogether there are 2600 unconnected streets and 16900 duplicate way segment errors have been fixed. In total we have an increment of 1111000 new OSM way segments for routing during the past 4 weeks in Europe (01/20/2011: 30600000, 02/20/2011: 31710000).

The following image shows the amount of errors divided by country for today’s Europe OpenStreetMap dataset:

In the past month several other countries were able to reduce the amount of errors, such as in: France (-1600), Italy (-1600), Poland (-1900), Sweden (-2300) and United Kingdom (-8000!!!). So congratulation to the UK, this is your month 🙂

Now let’s take a look at the new diagram: The following image shows the amount of errors per 100 km OpenStreetMap streetnetwork data for each country.

Do you have any other ideas for additional diagrams? I think dividing the amount of errors for each country by the number of OSM ways or segments could be an interesting approach, what do you think? The last image shows the amount of errors divided by country:

thx @ Dennis

Overall the following amount of errors appears for “Europe” at the middle of January 2011:

• Unconnected Roads: ca. 109600
• Duplicate Ways (number of duplicate segments): ca. 125900
• (read more about the error-types here)

This means that altogether there are 3000 unconnected streets and 13400 duplicate way segment errors have been fixed (last month we had 112600 unconnected roads and 139000 duplicate ways errors). In total we have an increment of 1139000 (+3.8%) new OSM way segments for routing during the past 4 weeks in Europe!

• 12/23/2010: 29400000
• 01/20/2011: 30600000

The following image shows the amount of errors divided by country for today’s Europe OpenStreetMap dataset:

In the past month several other countries were able to reduce the amount of errors, such as in: France (-2900), Portugal (-2900) and Romania (-2200). So I think the award for this month goes to Portugal 🙂 (Is the reduction a result of this action? However, nice work!). But further countries such as Albania, Belgium, Bosnia and Herzegovina, Bulgaria, Germany, Greece, Slovakia and Sweden were able to reduce more than 1000 errors each. Only Spain (+1200) and the United Kingdom (+2000) have a gained more errors!

The following diagram shows the total amount of errors for 1m, 2m, 5m unconnected & duplicate way segments:

As usual for Germany, the comparison of federal states (includes the error type “Unconnected 1m”):

Yay, nearly all federal states could reduce their amount of errors!

thx @ Dennis

Short update with new statistics for the “Routing View EU“. Overall the following amount of errors appears for “Europe” at the middle of December 2010:

• Unconnected Roads: ca. 112600
• Duplicate Ways (number of duplicate segments): ca. 139000
• read more about the error-types here

This means that altogether there are 5100 new unconnected streets and 20000 duplicate way segment errors have been fixed (last month we had 107500 unconnected roads and 160000 duplicate way errors). In total we have an increment of 1300000 (+4.6%) new OSM way segments for routing in the past 5 weeks in “Europe” (this is nearly twice the number in comparison to one month ago)!

The following image shows the amount of errors divided by country for today’s Europe dataset:

In the past month several other countries were able to reduce the amount of errors, such as in: Austria (-3200), France (-4400), Italy (-2100), Portugal (-1200), Sweden (-2000), Switzerland (-4828 !!) and the United Kingdom (-3700). So I think the award for this month goes to Switzerland 🙂 . Germany keeps going on with its negative trend: A gain of about 2700 errors! It seems like the German OSM community is primarly tracing from Bing-imagerys, doesn´t it?

In the following diagram the bars for each country shows the total amount of errors for 1m, 2m, 5m unconnected & duplicate way segments:

As usual for Germany, the comparison of federal states (includes the error type “Unconnected 1m”):

(Nearly all federal states have a positive value regarding the amount of errors, except Rheinland-Pfalz, Sachsen, Schleswig-Holstein & Hamburg)

This was my last blog post for this year, so Merry Christmas and a Happy New Year 2011!
Bye for now …

In the past I did some blog posts about the “Growing agreement to contributor terms” here and here. Both posts showed the amount of OpenStreetMap contributors who accepted the new CTs every day during each time frame (about 55 contributors a day). I created a new diagram that includes the past four weeks:

Overall for the past month about 57 accepted the new CT every day. This is nearly the same amount as during the months that have been analyzed before. But what does this exactly mean for the relicensable OSM data? Almost 2 months ago I did a post about the “Change of OSM object numbers through relicensing”. At this time there were about 55% of all OSM Nodes and 47% of all OSM Ways available for relicensing (you can find my post here).

I repeated this analysis with the current OSM data: In the first attempt I used the last modifier of an OSM object (node/way/relation) as the owner of the object. During the second analysis I used the creator (version=”1″) as the owner of the object.

In my OSM-user-database of 12/15/2010 a total of 111310* members are the “owners” of the following OSM objects (* Notice: Not every member of the OSM project has contributed!):

• Number of nodes: 878201891
• Number of ways: 73825397
• Number of relations: 790100

(Current status of the OSM database statistics are here)

As of Dec. 19 th, 2010 (16:00), 6076 Users have accepted the new license. 25487 new OSM members (uid >= 286582) have accept the new contributor terms automatically. I created the following numbers of OSM objects, which will be available for relicensing (at the above mentioned date of my data). If you assume that the last modifier is the owner of the object: (the numbers in brackets represent the percentage of the total objects!)

• Number of nodes: 584163816 (66,52%) (as of 10/10/2010 it was 55,89%)
• Number of ways: 45536248 (61,68%) (as of 10/10/2010 it was 47,56%)
• Number of relations: 491014 (62,14%) (as of 10/10/2010 it was 31,06%)

I did the same analysis with a second dataset in which the creator (version=”1″) is also the owner of the OSM object (my table is based on the full-history-dump of October 22, 2010). A total of 109005 members created:

• Number of nodes: 911411022
• Number of ways: 75235513
• Number of relations: 1151219

And the following numbers of OSM objects (version=”1″) will be available for relicensing:

• Number of nodes: 586598103 (64,36%) (as of 08/01/2010 it was 54,24%)
• Number of ways: 44844834 (59,60%) (as of 08/01/2010 it was 46,78%)
• Number of relations: 480370 (41,73%)

Notice: The last numbers of OSM objects could contain deleted objects too. I only checked and counted the version=”1″ of a object. So probably the numbers for relicensing OSM objects (version=”1″) should be smaller!

However, in my opinion the results are interesting enough to publish them here anyway.
Can anyone confirm these absolute numbers?

thx @ dennis !

And again, I did a small update to “How did you contribute to OpenStreetMap ?” (http://hdyc.neis-one.org).

You can now see your ranks within the OSM World, depending on how you have been contributing to the project!

Besides the regular OSM data update, implemented by applying the planet- & changeset-dump (dated 2010-12-15), I also added two additional rows with some information about your data. In the picture below you can see your rank in OpenStreetMap (1) separated by different OSM objects such as Nodes, Ways or Relations. The rank refers to the amount of objects that have been lastly modified by you (see also row: “… are the last modifier of:”). The percentage in the brackets gives you an impression of how big your contribution to the project has been so far in comparison to the whole OSM database.

Some more information about my current database (dated 2010-12-15):

• At the moment about 111000 different users* are the last modifier in the OSM database
• Overall about 149000 contributors have created a changeset
• In the OSM database there are about 878000000 nodes, 73800000 ways and 790000 relations

*Remember: Not every member of the OSM project, which are currently more then 330000, has contributed!

I think a regular contributor should have a rank better then #14000. A really active one could have a rank better then #1000 and probably only bots are in the Top Ten. However, what is your OSM Rank ? >> http://hdyc.neis-one.org
Have fun !

Thx @ “AFK” Dennis 😉

Last weekend I added some information to “How did you contribute to OpenStreetMap ?“. The “ChangeSets” (1) of an OpenStreetMap contributor can be seen now too. To be more specific, you get the following numbers:

• ChangeSets == Overall amount of your ChangeSets
• Changes == Overall amount of your changes within your ChangeSets
• First ChangeSet == Date of your first ChangeSet
• Last ChangeSet == Date of your last ChangeSet

You can make this information visible by clicking the “more“-link (2)! In the following picture below you can see the new add-on:

Notice that the date that is shown in the ChangeSet-information field (see image above) is always the same as the date that is being displayed underneath the “Your last Node … “-image (3). Check it out here: http://hdyc.neis-one.org

Recently some new posts on the German OpenStreetMap-Mailing-List regarding the coverage of yet undetected regions in OpenStreetMap have been accumulating, caused by the current clearance of the BING-aerial images.

In one of my former blog posts that I wrote back in August this year, I introduced an analysis that included the search for “places” such as small villages etc. in Germany that probably had not been mapped in OSM at that time (the post in German language can be found here).

However, I repeated this analysis using the database of the routing view. This time I expanded the research area to entire Europe. In total there are 477591 places in Europe covered in OSM (at the moment). They can be separated into the following place-types:

• city=1045
• town=16032
• suburb=23563
• village=271147
• hamlet=165804

During my analysis I *only* used those places that had a corresponding “village-tag”. For the case of Germany it can be assumed that places with “higher” place-type tags such as “town” or “city” have already been mapped. In the special case of the “hamlet”-tag there were too many “false=positives” included, thus they could not be considered during the analysis.

The results showed that of the total 271147 villages, about 156940 villages (58%) who are located within Europe, have not been detected or mapped yet (corresponding to the Geofabrik extract). The following diagram shows the distribution of the numbers by country.

The results can either be displayed as a GPX-overlay on an OSM-map which can be found http://resultmaps.neis-one.org or they can be downloaded as a *.zip file that includes the results for all countries that have been included in the analysis (see at the End!).

Remarks for http://resultmaps.neis-one.org :

1. Not each and every country is available as an overlay.
2. Some countries such as France, Poland and Ukraine showed longer browser loading times to display the GPX-overlays.

There is a possibility that some of the “places” have been mapped by now. Currently there is a lot of work being contributed to OSM with the help of the new BING aerial images!

thx @ VBA Dennis 😉

Download Unmapped Places GPX *.zip file: 20101205_results_unmapped_eu.zip

In my last post in average ca. 38 members accepted the new Contributor Terms (CT) every day. I created a new diagramm which shows the increase of the accounts for the past month.

Overall for the past month every day ca. 55 accepted the new CT.

What causes the increasing support to the new license? Are more people getting familiar with the new license through publicity work? Or is it maybe Fabian´s ODbl-Map?

thx @ dennis

Because of the upcoming license discussions, I made some small additions to the “How did you contribute to OpenStreetMap?” website. First (1) I imported a new planet dump file dated 11/17/2010. Additionally the user can get the information now if the OSM contributor has agreed to the new ODbL/CT, indicated by a green “Agreed” at the bottom part of the page.

If the OSM contributor has not agreed to the new ODbL/CT yet, it’s showing a different message (3), requesting the contributor to review and accept the new ODbL/CT here.

I hope that helps and please remember: If a contributor has not agreed to the new license yet, it could imply that he/she does not know about the license changes so far!

Try it out: http://hdyc.neis-one.org/

thx @ Dennis

And again, here are the new statistics for the “Routing View EU“.

Overall (according to the Geofabrik extract) the following amount of errors appear for Europe at the middle of November 2010:

• Unconnected Roads: ca. 107500
• Duplicate Ways (number of duplicate segments): ca. 160000

Unfortunately this means that overall only 500 unconnected streets and 22000 duplicate way segment errors have been fixed (last month we had 108000 unconnected roads and 180000 duplicate way segments errors). As always, the following image shows the amount of errors divided by country:

Wow Italy! It’s really nice to see what’s happening there! During the past month they fixed more than 9000 errors again. And now they are really catching up with Germany 🙂 But also in several other countries some people were able to reduce the amount of errors too, such as in: Albania, Denmark, Greece, Iceland, Norway or Sweden. More than 1000 errors have been fixed here in each country 🙂

Slightly disturbing is the situation in Germany: A gain of more than 3.000 errors! What’s going on?! 🙁

The comparison for each month and country can be seen in the following diagram. (The bars shows the total amount of errors for 1m, 2m, 5m unconnected & duplicate way segments):

As usual, the comparison of federal states of entire Germany that included the error type “Unconnected 1m”:

Overall, nearly all federal states have a positive value regarding the amount of errors 🙁 Not quite good, especially considering the numbers of the past few months. So tell me…what’s going on in Germany? Are you not interested in fixing errors in the map or database?? What do you think is the problem?

thx @ dennis and Good Luck to you for Thursday!