[gdal-dev] Public XYM or XYZM datasets?

[Jaak Laineste]

It looks like I get only one link with some selected layers. Which layers are worth to try?

Your selected spatial data sets from the Finnish Transport Agency are available at the following link:
https://extranet.liikennevirasto.fi/livi/inspire-downloads/41...zip

The download link is valid for 10 days. For further information,please contact us at

Jaak
> On 29 Aug 2016, at 08:15, Ari Jolma <ari.jolma at gmail.com> wrote:
> 
> 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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