[gdal-dev] Public XYM or XYZM datasets?

[Ari Jolma]

In the download email you should have K and R data set options (two 
URLs). Only R has measured geometries.

Ari


29.08.2016, 01:43, Carl Godkin kirjoitti:
> 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 
> <mailto: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
>     <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
>>     <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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