[Talk-GB] State of play of OS Vector data

[Chris Hill]

The Meridian data is pretty crude and incomplete. The residential level 
roads seem to be largely missing, especially in rural areas. The curves 
are chunky and crude. Similarly the woods and water are not fully 
represented and are chunky. The admin borders have chunks missing.

I just ignored it as worthless.

I am strongly in favour of surveying on the ground where possible. I'm 
trying to use the OS data for things we can't gather, such as boundaries 
and inaccessible things such as docks, some waterways and some railways.

Tracing the StreetView, with a suitable source tag, seems to me to 
provide a way for people who can't survey on the ground to add 
something, but the data you miss by doing this (shops, maxspeed, pubs, 
schools, churches, post boxes and so on, as well as stuff OS got 
wrong/missed/have changed) still makes this a poor, second rate job.

Using such a tracing to then walk/cycle/drive around to add the POIs 
does add a lot of value.

Cheers, Chris


Graham Jones wrote:
> Hi Chris,
> That is a really good summary of what the dataset contains thank you - 
> the woodland areas will certainly be useful for countryside maps.
>
> Do you know how this data compares to the Meridian data that OS 
> released last month?  I know many people were unimpressed with it, but 
> I think that it contained street names didn't it?   If so maybe that 
> would be a more useful 'first pass' import?
>
> I am thinking of some areas where I know there are housing estates, 
> but I have neither the time nor inclination to cycle around them to do 
> a proper survey -  Having something in the map for these seems better 
> than nothing to me.
>
> If we were to import such data (via an editor as discussed before - 
> not a bulk import!), we could tag it as 'verified=no' and get the 
> renderers to show them in a lighter colour until someone checks it and 
> takes the 'verified=no' tag off?   This could alleviate the concerns 
> that people had that users will not survey an area if it looks 
> complete on the map?
>
> Regards
>
>
> Graham.
>
> On 2 May 2010 13:14, Chris Hill <osm at raggedred.net 
> <mailto:osm at raggedred.net>> wrote:
>
>     Seventy 7 wrote:
>     > Can someone tell us what's happening with the latest release of
>     OS data please? When streetview came out there were quite a few
>     emails about tiles being rendered for tracing etc but this time
>     it's all been very quiet!
>     >
>     > I presume someone somewhere is doing the vector data, but what
>     about the others?
>     >
>     I've just written a blog about VectorMap http://is.gd/bQUgR
>
>     Cheers, Chris
>
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>
> -- 
> Dr. Graham Jones
> Hartlepool, UK
> email: grahamjones139 at gmail.com <mailto:grahamjones139 at gmail.com>