[R-sig-Geo] CSV with Geometry Column to SF object

[Edzer Pebesma]

Without sharing a (minimal) reproducible example, it is unlikely that
someone else can help you find out whether this points to a problem in
your data, or in the software.

On 10/15/19 2:31 PM, argunaw . wrote:
>   When I run this, I get the following error:
> 
> *Error in CPL_sfc_from_wkt(x) : OGR error*
> 
> When I run it on my data, I get the same error.
> 
> On Tue, Oct 15, 2019 at 2:16 PM Edzer Pebesma
> <edzer.pebesma using uni-muenster.de <mailto:edzer.pebesma using uni-muenster.de>>
> wrote:
> 
>     You may try something along these lines:
> 
>     # read data.frame with read.csv; here, we create an example by hand:
>     df = data.frame(
>                     a = 1:3, b = 3:1, geom = c("LINESTRING(0 0, 1 1)",
>     "LINESTRING(1 1,2
>     2)", "LINESTRING(5 5,6 6)")
>     )
> 
>     library(sf)
>     sf = st_sf(df, geom = st_as_sfc(df$geom))
>     sf
> 
> 
>     On 10/15/19 1:58 PM, argunaw . wrote:
>     > I'm not sure how it was exported from postgis- the person who gave
>     me the
>     > file wasn't the one who downloaded it unfortunately.
>     >
>     > The file is a line file of roads. The files main columns are road ID
>     > numbers (type integer) and the geometry column (type geometry,
>     long strong
>     > of letters and numbers). Only the IT admins where I am have the
>     postgis
>     > load/import tools in the pgadmin/sql interface. The rest of us can
>     download
>     > from sql and create new tables from other sql databases, but not
>     create a
>     > new table from a csv file.
>     >
>     > On Tue, Oct 15, 2019 at 1:11 PM Alex Mandel
>     <tech_dev using wildintellect.com <mailto:tech_dev using wildintellect.com>>
>     > wrote:
>     >
>     >> On 10/15/19 8:43 AM, argunaw . wrote:
>     >>> Hello Everyone,
>     >>>
>     >>> I have a csv file with a postgis "geometry" column. I've been
>     trying to
>     >>> import it in to R as a SF file, with the goal of exporting it to a
>     >> postgis
>     >>> database, but to no avail. I've used the following methods:
>     >>>
>     >>> 1. file <- st_read("name.csv", stringsAsFactors=F,
>     geometry_column=geom)
>     >>>
>     >>> 2. file <- fread("name.csv", headers=True)
>     >>>     file <- st_as_sf(file)
>     >>>
>     >>> How can I import a csv with a postgis "geometry" column in to R as a
>     >>> spatial/SF object?
>     >>>
>     >>>       [[alternative HTML version deleted]]
>     >>>
>     >>> _______________________________________________
>     >>> R-sig-Geo mailing list
>     >>> R-sig-Geo using r-project.org <mailto:R-sig-Geo using r-project.org>
>     >>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>     >>>
>     >>
>     >> Can you paste an example somewhere, is it binary data or some kind of
>     >> plain text column? Do you know how it was exported from Postgis?
>     >>
>     >> If it's a dump from a postgis database did you try loading the table
>     >> directly to postgis with it's own load/import, or sql tools?
>     >>
>     >> Thanks,
>     >> Alex
>     >>
>     >
>     >       [[alternative HTML version deleted]]
>     >
>     > _______________________________________________
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>     > R-sig-Geo using r-project.org <mailto:R-sig-Geo using r-project.org>
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>     >
> 
>     -- 
>     Edzer Pebesma
>     Institute for Geoinformatics
>     Heisenbergstrasse 2, 48151 Muenster, Germany
>     Phone: +49 251 8333081
>     _______________________________________________
>     R-sig-Geo mailing list
>     R-sig-Geo using r-project.org <mailto:R-sig-Geo using r-project.org>
>     https://stat.ethz.ch/mailman/listinfo/r-sig-geo
> 

-- 
Edzer Pebesma
Institute for Geoinformatics
Heisenbergstrasse 2, 48151 Muenster, Germany
Phone: +49 251 8333081

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