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

[argunaw .]

Here is a small sample of the dataset I'm working with- the strings are
really long for geometry, so apologies for the messiness.

df = data.frame(a=1:5,
geom=c("0105000020D70800000100000001020000000C000000003BA049F49B2E4100667C2F07460F410012BC05F09B2E4100303670E4480F410019849E1D9C2E41007A13FB1B4C0F4180AFF579479C2E41005C30996E4E0F41001E3A23509C2E4100D0F0A76A500F41803BD015919C2E41004A1AFBA7540F4180024687D89C2E4100BA8183FD560F418067F48E3D9D2E410064EAE9D4590F4100852B29879D2E41007AD06D445C0F410053C7ADB99D2E4100D614CECE5F0F41006A378D0F9E2E4100E6D2D363620F4180781D0D679E2E41007829482A660F41",

"0105000020D70800000100000001020000000200000080048144E38A2E41001E996E65F20A41805C14EE428B2E41005617618EF50A41",

"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",

"0105000020D708000001000000010200000003000000009875DF60AC2D4100606296BDAC07410037DB98F1AC2D41001C5EFC79AA074180A23112E1AA2D41001E0E5F18A20741",

"0105000020D708000001000000010200000004000000809F59A9A8E02D41009EACC82A130841807FA2D79DE02D410092AB7B64130841007843FF9CE02D41003434DFAE130841805FF302D9E02D41002AC2FE9C180841"))

On Tue, Oct 15, 2019 at 3:30 PM Edzer Pebesma <edzer.pebesma using uni-muenster.de>
wrote:

> 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]]
> >     >
> >     > _______________________________________________
> >     > 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
> >     _______________________________________________
> >     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
>

	[[alternative HTML version deleted]]