[gdal-dev] Public XYM or XYZM datasets?

[Carl Godkin]

Thank you very much for the response.  (This isn't the first time I've
found great example data from Finland, by the way.  When I was
experimenting with Lidar data a few years ago I found that Finland's
collection was enormous!)

However, I can't see what you mean by the "R" data.  I selected various
"Map Layers" and downloaded a few random shapefiles and none had "Measured"
geometry (according to ogrinfo).

Thanks for your help.  Sorry if this is a dumb question!

carl


On Sun, Aug 28, 2016 at 12:48 AM, Ari Jolma <ari.jolma at gmail.com> wrote:

> The Finnish national road data was my motivation to add M to OGR.
>
> You can download it from
>
> https://extranet.liikennevirasto.fi/extranet/web/public/latauspalvelu
> The page is also in English (click EN on top left)
>
> The "R" data is the one you want.
>
> The meta data etc is probably in Finnish only so you may need to
> experiment. M values are used to encode point-like attribute data into the
> line strings.
>
> Good luck,
>
> Ari
>
> 26.08.2016, 01:43, Carl Godkin kirjoitti:
>
> Hi,
>
> While I had read about XYM and XYZM on the mailing list a few months ago,
> I had no experience with those geometry types until today when I happened
> to stumble on
>
> http://www-static.bouldercolorado.gov/docs/opendata/OSMPTrails.zip
>
> which contains a shapefile of trails around Boulder, Colorado that has
>     Geometry: Measured Line String
> in GDAL 2.1's ogrinfo.
>
> I would like to find some other datasets with XYM (and/or XYZM) geometry
> for testing.
>
> I didn't see any associated with the RFC or tickets associated with it.
>
> Can anyone point me to any others?  Thanks very much,
>
> carl
>
>
>
>
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