[R-sig-Geo] tpk files

Edzer Pebesma edzer@pebe@m@ @end|ng |rom un|-muen@ter@de
Thu Apr 11 22:56:49 CEST 2019


It's a 30 Gb 3D point file:

$ ogrinfo EMU.gpkg
INFO: Open of `EMU.gpkg'
      using driver `GPKG' successful.
1: EMU_Master (3D Point)

@Shaun: homebrew seems to be supported neither by apple, nor by CRAN, so
you are a bit on your own there. Have you tried the CRAN binary packages
using GDAL?

In any case, the windows binary does (should) support gpkg, see
https://github.com/rwinlib/gdal2

Trying to read this file into R with sf::st_read will require a lot of
RAM, or some strategy to read in parts only.

On 4/11/19 5:52 PM, Shaun Walbridge wrote:
> I think the issue is, most GDAL installations don't have the Geopackage raster driver [1] installed by default, which lists "Needs libsqlite3 (and any or all of PNG, JPEG, WEBP drivers)" for it to be available. At least on my Homebrew installation of GDAL, this driver wasn't built out of the box. If you rebuild GDAL with this additional driver, or find a prebuilt binary which has it, it should be able to open. A simple test is if `gdalinfo EMU.gpkg` returns information about the dataset outside of R.
> 
> 1. https://urldefense.proofpoint.com/v2/url?u=https-3A__www.gdal.org_drv-5Fgeopackage-5Fraster.html&d=DwIGaQ&c=n6-cguzQvX_tUIrZOS_4Og&r=fCPRb7QX-vd5bnO9gIJHCiX852SVUtyYX--xtCKtpfk&m=p5ULiF5de1gKZBP-IzWbMO9Pe5LFzv9uaZ5VJYnWw1Y&s=d6xaKGlN0jpd8mBdjKXAhzst7N3Bgo43BvJlLnDSngk&e=
> 
> On 4/11/19, 11:41 AM, "Barry Rowlingson" <b.rowlingson using gmail.com> wrote:
> 
>     What did you try? The instructions at the top say:
>     
>     "Download 3.3GB tile package and rename extension from .tpk to .zip.
>     Extract to get EMU.gpkg"
>     
>     If that's a valid GeoPackage then `sf` should be able to read it. Not sure
>     what might be in the geopackage though, "tile package" sounds like rasters,
>     but GeoPackages are generally vector...
>     
>     I'll try in five minutes when all 3.3Gb have downloaded....
>     
>     On Thu, Apr 11, 2019 at 3:37 PM Marta Rufino <marta.m.rufino using gmail.com>
>     wrote:
>     
>     > Hi,
>     >
>     > I would like to open (and use) a 'tpk' file from arcgis in r.
>     > For example:
>     >
>     > https://esri.maps.arcgis.com/home/item.html?id=24885cd6bd9544f5a8e15d0bf40f67d6
>     >
>     > I tried raster and sf package, but no luck.
>     >
>     > Any ideia if we can do this in r?
>     >
>     > Thank you very much in advance,
>     >
>     > Best wishes,
>     > M.
>     >
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-- 
Edzer Pebesma
Institute for Geoinformatics
Heisenbergstrasse 2, 48151 Muenster, Germany
Phone: +49 251 8333081

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