[Talk-GB] OS VectorMap water feature import
Richard Mann
richard.mann.westoxford at gmail.com
Mon Dec 12 09:29:22 GMT 2011
If the conclusion is that there's no point importing OS VMD water features
into OSM...
Would it make more sense to extract the water features and convert them
into a standalone osm.pbf, so they can be used as-is to make a background
layer (warts-and-all)?
Richard
On Sun, Dec 11, 2011 at 7:45 PM, Graham Jones <grahamjones139 at gmail.com>wrote:
> On 11 December 2011 18:46, Tim François <sk1ppy14 at yahoo.co.uk>
>
>> The entire process took a long, long time (we're talking many hours), as
>> the OS data is all fragmented and needs joining up.
>>
>> This is one where it is certainly possible to import the data, but to do
> it manually is going to be a huge amount of effort, and I wonder if it is
> really worth the effort?
>
> I see the main benefit of OSM in providing 'added value' geographic data
> that is not available in other freely available sources. Last time I made
> a map of an outdoor area, I found that the OS Vector Map District (VMD)
> water features added a lot to it, because the OSM data was pretty plain.
> In the end I actually made the map from a mixture of OSM and VMD Data, with
> SRTM generated contours.
> I certainly used OSM footpaths and route relations (because they are not
> in any of the other data sets) - as I wanted to highlight a walking route.
>
> I used VMD waterways because they were far more complete than OSM.
> I think that for the area I was working on (Weardale) I used VMD roads
> too, because there are still a lot missing from OSM.
>
> Where I struggled was in woodland areas - you get a lot more if you use
> VMD, but I also know that quite a lot have been felled, which can be
> changed in OSM, but not VMD, so this was a difficult choice. (You can see
> the output here<https://github.com/jones139/Mapnik-OSM-Styles/raw/master/weardale_way/image_vmd_fc.png> (but
> there is something wrong with the grid on the version on that server,
> sorry!....and the rendering style is not as pretty as the main OSM one).
>
> I wonder if a more productive use of our efforts would be in developing
> tools to make it easier to make such merged data maps and highlight the
> 'value added' bits from OSM that make it stand out from a Land Ranger map?
> [Things like showing all the industrial archeology, real ale pubs etc.].
>
> I am working (very slowly) on a tool that will pull together the required
> data to produce these sort of things and render it at high resolution for
> printing. It is not at the sort of state that I would publish it and
> recommend that someone just tries it (no nice front end), but it is getting
> there and I can make maps from it when I want to. I would be happy to put
> more effort into it if there was interest (or anyone interested in
> helping!).
>
> One final thing is that if we do say that we will not import the VMD data
> into OSM, this means that it will not appear on the main OSM web site map.
> We could show off what is possible though by making a 'osm-uk' site with
> a web map that combines the various data sources in a web map?
>
> Regards
>
>
> Graham.
> --
> Graham Jones
> Hartlepool, UK.
>
>
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