Really great news for all our non-European OpenStreetMap.org Mappers: Since last month, the OSM Routing View is available for the whole world. You can read more in Frederik’s blog post. Yesterday he sent me the latest results of the view and I did some analysis with it. To all new readers: you can find more information about the OSM Inspector (OSMI) here. The Routing View within the OSMI “shows problems in the data, related to routing and navigation” (direct link).

However, here are the new *worldwide* stats for November 2011: we have a total of about 1,3 Mio errors. We can divide them into the following groups:

• Unconnected 1 meter: 248000
• Unconnected 2 meter: 62000
• Unconnected 5 meter: 170000
• Duplicate (number of duplicate segments): 833000

The following diagram shows the amount of errors per continent:

In the following charts you can see the amount of errors separated by country and the amount of errors in detail per country for “Europe”:

The last unmapped places analysis for OpenStreetMap that I conducted is nearly eight months ago. So I figured it was about time to create a new one. You can read in the last blog post how my algorithm exactly works.

However, at the moment (Nov. 4th. 2011) we have (according to the Geofabrik extract) about 597 000 entries in OSM for places that are located within “Europe“. This means we have an overall increase of about 90 000 places within the past eight months. We can separate them into several types with different values:

• City: 1093 (as of March 11th, 2011 it was 1055 ; +3.6%)
• Town: 16213 (as of March 11th, 2011 it was 16106 ; +0.7%)
• Suburb: 29642 (as of March 11th, 2011 it was 24913 ; +19.0%)
• Village: 301638 (as of March 11th, 2011 it was 278691 ; +8.2%)
• Hamlet: 238717 (as of March 11th, 2011 it was 184326 ; 29.5%)
• Isolated dwelling: 9064 (new in my stats)

First of all, sorry that I did not create a new stat regarding the Routing View past month. To all the new readers: Usually I create an analysis about the Routing View of the OpenStreetMap Inspector for each month for Europe. You can find more information about the OSM Inspector (OSMI) here. The Routing View within the OSMI “shows problems in the data related to routing and navigation”. You can read more about it here … A direkt link to the OSMI Routing View is here!

However, here are the new stats for May, 2011: we have a total of about 124000 “Unconnected Roads” and about 108000 “Duplicate Ways” (number of duplicate segments). Overall this means that we have about 17000 *new* „Unconnected Roads” errors and only ca. 1300 “Duplicate Ways” have been fixed in Europe. For the past three months we have an increment of about 2850000 new OSM way segments for routing. (May 7th: 34500000, February 20th: 31700000, January 20th: 30600000)

My last blog post about “Unmapped Places in Europe” was read by more then 800 people. So I think it’s time to redo the analyses a second time after three months. At the moment (March 11th, 2011) we have (according to the Geofabrik extract) 505091 places in OpenStreetmap Europe. They can be separated into the following place-types:

• city=1055 (as of Dec. 5th, 2010 it was 1045 -> +1%)
• town=16106 (as of Dec. 5th, 2010 it was 16032 -> +0.5%)
• suburb=24913 (as of Dec. 5th, 2010 it was 23563 -> +6%)
• village=278691 (as of Dec. 5th, 2010 it was 271147 -> +3%)
• hamlet=184326 (as of Dec. 5th, 2010 it was 165804 -> +11%)

During my last and also during this analysis I *only* used those places that had a corresponding “village”-value. My tool works so far as followed:

1. Get only places with a village-tag.
2. Search nearby (ca. 600m distance) for a street with one of the following highway-types: residential, service, living_street, cycleway, footway, pedestrian, steps or platform.

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 🙂

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!

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?

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.

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 🙂

As mentioned in my last post, I am trying to conduct some statistics for the “Routing View EU” each month that show the areas where the amounts of errors have changed.

Over all (according to the Geofabrik extract) the following amounts of errors appear for the area of Europe at the moment:

• Unconnected Roads: ca. 108000
• Duplicate Ways (number of duplicate segments): ca. 182000

This means that compared to last month about 3000 unconnected streets and 31000 duplicate way segment errors have been removed in Europe. The following image shows the amount of errors divided by country:

If Italy keeps up the good work (-11000 errors) it will catch up with Germany in one or two months. But also Austria, France and Norway were able to correct a lot of errors. For some reason the United Kingdom does not show much of a difference and still has a high amount of errors!?