[OSM-talk] Land Information New Zealand (LINZ) -> Openstreetmap import first pass

[Dave G]

Joe

nice work!

I've only had a quick  look around a few SI areas that I'm familiar with on
map compare and the imported data would be huge bonus to the map

there are some obvious omissions and variations as you mentioned one that
stands out to me is the omission of the Rakaia River which is more than a
small creek!

and also Canterbury some roads shown as minor tracks but as I see it having
them is a huge bonus as they can be retagged later to correctly display etc
from local survey/knowledge

I don't have you tech skills but would be happy to assist with improving
correcting the data after the import as I have quite alot of local knowledge
and about and about all over the SI

thanks again for your good work

dave (gerkin)



2009/7/1 Joe Richards <joefish75 at yahoo.com>

>
> I've been working on the LINZ data import, on attribution/legal as well
> as the actual import.  The LINZ data I have is actually via the NZ
> Open GPS project and is in Polish Map (.mp) format, which seems
> to use Garmin types for its features.
>
> I've hacked around with a few other scripts and have created a python
> script which creates .osm files, and then imported them into a local
> postGIS instance I run at home.  From there I've generated tiles using
> Mapnik  and uploaded them to a dev server for your perusal....
>
> Upload is still in progress but most are there already (starting in the
> north and working south).  It's just south of Christchurch already and
> I have gone and rendered Dunedin, Queenstown and Glenorchy ahead
> of time.  If you find zoom 16 is not visible then zoom out a bit until you
> find the available tiles.  As mentioned all of the north island is done.
>
> http://linz.dev.openstreetmap.org/~JoeRichards/<http://linz.dev.openstreetmap.org/%7EJoeRichards/>
>
> Notes:
>  * import was done on a basic world map (from vmap0) to provide
> coastlines where they were missing
>  * some large rivers have a lot of detail, but some seem to be missing
> altogether (e.g. Lower Hutt river) - this was also missing in the NZOGPS
> dataset,
> not sure why
>  * tiles are still being generated and uploaded now (Tue 30th June),
> but all of the north island to 16 zoom levels is done as well as the
> Tasman... South of Christchurch is still being uploaded (although some
> tiles are there at lower zoom levels)
>  * I think most of the road types (primary, secondary, trunk) etc
> might be completely off, including the link roads.  Please send me any
> specific instances or comments on this
>  * No attempt made to support anything like turn restrictions or
> relations since this was missing from the original dataset
>  * Roundabouts seem to have an issue as well, where their parts are
> missing
>  * large lakes such as Lake Wakatipu near Queenstown were split across
> two datasets, and as such as not showing up
>  * central cities seem to have more detail in the existing OSM data
> (except perhaps some missing street names) but rural areas have
> less... This is ok, but your thoughts are welcome on how to merge
> these
>  * parcel boundaries (cadastral) information, showing property boundaries,
> shapes, and house numbers will be imported separately, ie are to-do
>  * Department of Conservation parks, national parks, reserves etc are
> also to-do, although some are present in the current dataset.
>  * No data is merged with current OSM data, so this is really to spot
> problems
> before we attempt merging.  It has been suggested we might use
> the java-based RoadMatcher for this.  Your comments are welcome.
>  * Thanks to Geofabrik.de for allowing me to use their "compare" javascript
>
> I will also put up the .osm files generated by the script so you can
> check out whether the data is there, but just incorrectly tagged.
>
> Please feedback to me anything you see, especially if it is incorrect.
> Since the plan is to merge this with the existing Openstreetmap data,
> missing features that are in OSM are less of an issue than features
> that should be in the imported dataset but are not (and hence are
> missing on both).
>
> Source (GPL) is here
>
> http://trac.openstreetmap.org/browser/applications/utils/import/linz2osm/mp2osm_linz_jr.py
>
> Anything in the code marked as TODO or FIXME requires special attention and
> verification.
>
> Enjoy and feel free to comment!
>
>
>
>
>
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>
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