[R-sig-Geo] st_write and gpx file

[Ahmadou Dicko]

Hi Patrick,

You can add the driver manually.

st_write(walk, dsn = "walk.gpx", layer = "track_points", driver = "GPX")

Hope it helps,
Ahmadou


On Sat, Mar 5, 2022 at 6:53 PM Patrick Giraudoux <
patrick.giraudoux using univ-fcomte.fr> wrote:

> Dear listers,
>
> I am making trials with the sf package trying to write point geometries
> into afile. Here is the sf object:
>
> > walk  Simple feature collection with 2095 features and 2 fields Geometry
> type: POINT Dimension: XY Bounding box: xmin: 5.951268 ymin: 47.29238
> xmax: 5.974512 ymax: 47.3015 Geodetic CRS: WGS 84 First 10 features:
> track_seg_point_id ele geometry 1 0 243 POINT (5.95348 47.29709) 2 1 243
> POINT (5.953438 47.29704) 3 2 244 POINT (5.953219 47.29702) 4 3 243
> POINT (5.952884 47.29713) 5 4 243 POINT (5.952492 47.2972) 6 5 243 POINT
> (5.952335 47.29743) 7 6 242 POINT (5.951881 47.29732) 8 7 242 POINT
> (5.951495 47.29724) 9 8 293 POINT (5.951333 47.29719) 10 9 294 POINT
> (5.951388 47.29706)
>
> Writing a shapefile as well as a kml is no problem:
>
> st_write(walk,"walk.shp")
>
> st_write(walk,"walk.kml")
>
> But I cannot go through writing a gpx file, e.g.
>
> > st_write(walk,dsn="walk.gpx",layer="track_points")  Error: Could not
> guess driver for walk.gpx
>
> I have tried several other combinations all unsuccessful.
>
> Have someone an idea about what goes wrong ?
>
> Best,
>
> Patrick
>
>
>
>
>
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-- 
Ahmadou H. DICKO, PhD

Statistical consultant
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