[R] rgdal: Convert ESRI ArcGis geo database (gdb directory) to geojson, or shapefile map

[Guido Biele]

Thanks,
Now I found the driver in the current rgdal version!

Unfortunately I still can't open the database, even though the OpenfileGDB
driver is used.
When I list the layers
and then try to load one of the layers, I get the error message that no
features are found:

ogrListLayers("Stoy.gdb")
[1] "veg_storbyomrader"         "veg_traffikert_veg"
 "flyplass_store_flyplasser" "bane_storbyomrader"
[5] "bane_traffikert_bane"
attr(,"driver")
[1] "OpenFileGDB"
attr(,"nlayers")
[1] 5
> m = readOGR("Stoy.gdb",layer = "veg_storbyomrader")
Error in readOGR("Stoy.gdb", layer = "veg_storbyomrader") :
  no features found
In addition: Warning message:
In ogrFIDs(dsn = dsn, layer = layer) : no features found


Is this likely due to the database, or could this be a problem with the
driver?

In case that helps, here is the link to the map layer I want to extrac (the
link is to a web page, but I have the data base file).
http://www.miljostatus.no/kart/?lang=no&extent=152517|6532562|210570|6557188&layers=147:46;20:100;138:100;&basemap=KART&opacity=71&saturation=90

Best - Guido


On Sun, Oct 26, 2014 at 7:21 AM, Michael Sumner <mdsumner at gmail.com> wrote:

> This driver is present in the Windows binary on CRAN (at least it was
> in July):
> https://stat.ethz.ch/pipermail/r-sig-geo/attachments/20140710/5dda6bc4/attachment.pl
>
> I'm not sure about on Linux, I thought it was there but I may have
> inadvertently switched to an older GDAL on some systems. I can try
> this out on a test VM though, I'm keen to have rgal-recipes for
> installing on various systems.
>
> Let me know if:
> 1) you want Windows or Linux
> 2) you want help building / installing on Linux (Ubuntu)
>
> (Compiling the Windows binary is hard and mysterious, but I'd love to
> be able to do that too. I can do all of it except the final .zip
> package bundle which I don't understand yet)
>
> Cheers, Mike.
>
> On Fri, Oct 24, 2014 at 9:06 PM, Guido Biele
> <guido.biele at neuro-cognition.org> wrote:
> > Hello,
> >
> > I have an ESRI  ArGis geo database directory which I would like to
> convert
> > to geojson or a shape file (or anything else that I can read into R).
> >
> > Unfortunately that does not work out of the box with rgdal, because it
> does
> > not come with the fileGDB or openfileGDB driver.
> > I could successfully install gdal and the fileGDB driver/extension, but
> it
> > seems that i can use gdal only to convert the gdb file to a SQL database.
> >
> > So before I start to learn about SQL, I thought I ask if anybody can
> point
> > me to a tutorial or similar that explains how to convert the contents of
> a
> > GDB folder to a R-readable format.
> >
> > I also wondered if it would be possible to let rgdal know that it could
> > access the required drivers because I installed them manually.
> > I would appreciate any hint about this too!
> >
> > Thanks in advance!
> > Best Guido
> >
> >         [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
>
>
> --
> Michael Sumner
> Software and Database Engineer
> Australian Antarctic Division
> Hobart, Australia
> e-mail: mdsumner at gmail.com
>

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