OS Open Data mistakes

by **timbucks** » Fri May 18, 2012 10:39 am

I've been using overlays of OS Open Data Locator on Google Earth to put names to roads. However, I thought it was supposed to be the accurate and definitive list of street names, but no, it has mistakes in it.

The OS data has Tippett Close in Milton Keynes down as Tippet Close - as does Google Maps, and various printed maps of the area. Bing is actually correct - I have driven past the road and confirm that the street name spelling of Tippett is on the sign (Google Street View also shows this)

There's also a Cathherine Street in Buckingham according to the OS which I know is just Catherine Street - Google have the double h spelling.

So if you're relying on the OS Data you'll need to double check if something looks a bit odd.

by **xteejx** » Sun May 20, 2012 1:38 am

Report those instances to them and they will fix it on the next map release. I had a slight misspelling somewhere in Canterbury and reported it to them. They apologised and had it fixed.
Most of these are simple typing or admin errors. OS doesn't have copyright easter eggs ;-)

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by **monosodium** » Tue May 22, 2012 10:37 pm

Historically there were 'deliberate errors' in the OS data sets which they used to find out if people had been copying their data. That's not to say it's not a fowl up though.

by **xteejx** » Wed May 23, 2012 1:50 am

I have it on good authority from the OSM community that there are no deliberate mistakes in the data. They work closer with OS than we do. Probably should follow suit, it works for them.

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by **Dave2084** » Wed May 23, 2012 9:05 am

I'm using the OS data more and more, definitely the best resource out there.

I'd there a better viewer than the OS one? I'd like to use more of the screen!

by **timbucks** » Wed May 23, 2012 11:53 am

I've made a google earth overlay for the SP square and it puts a pin in the middle of a road segment and a bounding polygon of min and max points. I then changed it to be split by authority and settlement so there weren't thousands of pins

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by **timbucks** » Wed May 23, 2012 12:11 pm

This also has the advantage of showing short roads that don't always appear on the OS viewer

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Timbones · by **Timbones** » Wed May 23, 2012 12:12 pm

This does highlight the need to check multiple sources, as no single map source can be 100% accurate.

Meanwhile, I've started working on an addon that will pull in the possible names for a selected road.
Haven't got very far though...

by **xteejx** » Wed May 23, 2012 12:30 pm

Tim, there's already OS Musical Chairs for what you've done. Could've saved your time mate. :-)

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by **timbucks** » Wed May 23, 2012 12:41 pm

Is there? Didn't realise. Have you got a link

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