[R-sig-Geo] create a 3d shapefile ?

[Agustin Lobo]

Thanks, this is what seemed to me, but the following phrase from the sp pdf
"The classes document where the spatial location
information resides, for 2D or 3D data"

and some scattered info such as
http://gis.stackexchange.com/questions/43342/how-to-use-z-coordinate-in-qgis
http://grokbase.com/t/r/r-sig-geo/127s88jzc6/problem-extracting-z-value-from-line-shapefile

make me think that some support for x,y,x coordinates actually exists
in sp and perhaps writeOGR() could
have taken advantage of it.

I've got very good advice on how to create the 3d shapefiles using
simple python scripting in the qgis list, I insert the link:
http://osgeo-org.1560.n6.nabble.com/create-3d-shapefile-and-or-GPX-tp5040855p5040863.html

Agus

On Sat, Mar 16, 2013 at 2:00 PM, Michael Sumner <mdsumner at gmail.com> wrote:
> It is not possible.
>
> Cheers, Mike
>
> On Saturday, March 16, 2013, Agustin Lobo wrote:
>
>> Is it possible to write point ESRI shapefiles with x,y,z
>> coordinates using writeOGR()?
>> According to what I've been able to find, it seems
>> that spatial points can have 3 coordinates while
>> spatial lines cannot. Nevertheless, coordinates() accepts
>> 2 arguments (x,y) only. So actually, do not know how to define
>> x,y,z coordinates for spatial points (data frame) objects.
>> Is it possible?
>>
>> Thanks,
>>
>> Agus
>>
>> _______________________________________________
>> R-sig-Geo mailing list
>> R-sig-Geo at r-project.org <javascript:;>
>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>
>
>
> --
> Michael Sumner
> Hobart, Australia
> e-mail: mdsumner at gmail.com
>
>         [[alternative HTML version deleted]]
>
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo at r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo