[R-sig-Geo] Fwd: Re: Conversion of a SpatialPolygonsDataFrame into a ESRI file
joona.lehtomaki at cs.helsinki.fi
Tue Mar 20 14:00:09 CET 2012
Which version of ArcGIS are you using? The dbf-format is notorious for
mangling the field names longer than 10 characters. I can't imagine how
this might prevent the attribute table from showing, but you never know.
In ArcGIS, you could just try exporting the shapefile into a new file
(shapefile or geodatabase feature layer) and see if the new file behaves
On 03/20/2012 02:37 PM, Cristina Silva wrote:
> Sorry, I didn't reply for the list.
> -------- Original Message --------
> Subject: Re: [R-sig-Geo] Conversion of a SpatialPolygonsDataFrame into
> a ESRI file
> Date: Tue, 20 Mar 2012 12:15:46 +0000
> From: Cristina Silva<csilva at ipimar.pt>
> To: Pýnar Aslantas Bostan<aslantas at metu.edu.tr>
> Hi Pinar,
> The problem is not to get the data, this can be done directly with
> write.csv or write.table. I was looking for a package/function to export
> the whole spatial object to a ESRI shapefile with all the files needed
> (.shp, .shx, .prj and .dbf). With writeOGR I can do this but the
> resulting .dbf file is not read properly, although the data are there.
> Thanks anyway.
> On 20/03/2012 11:36, Pýnar Aslantas Bostan wrote:
>> Dear Cristina,
>> For this purpose I use "write.table" function.
>> my code is this;
>> write.table(dem, file="D:\\Data\\dem_outputs.txt", quote = TRUE, dec = ".",
>> qmethod = c("escape", "double"))
>> # "dem" is SpatialPixelsDataFrame in my study.
>> then you can add your data as txt file in ArcGis.
>> I hope this helps.
>> Best wishes,
>> -----Original Message-----
>> From: r-sig-geo-bounces at r-project.org
>> [mailto:r-sig-geo-bounces at r-project.org] On Behalf Of Cristina Silva
>> Sent: Tuesday, March 20, 2012 1:11 PM
>> To: r-sig-geo at r-project.org
>> Subject: [R-sig-Geo] Conversion of a SpatialPolygonsDataFrame into a ESRI
>> Dear all,
>> I need to export a SpatialPolygonsDataFrame to a shapefile to be read by
>> ArcGIS. I have used several packages and functions to do this with different
>> 1) with maptools, function writePolyShape: The file .prj is not created
>> 2) with spsurvey, function sp2shape: Doesn't work, gives the following
>> message "Error: Opening .prj file in C function writeShapeFilePolygon"
>> 3) with rgdal, function writeOGR:
>> * with data projected (transforming longlat into utm) or not (longlat:
>> the file is read by ArcGIS. However, when I try to open the
>> Attributes table, it gives the message that could not load the data
>> from the data source, suggests to refresh (which is not possible)
>> and opens an empty table, although having the number of columns and
>> lines of the data. Looking for the info of each polygon in the map,
>> the data are displayed for each individual record. So, the data
>> exist but are not acessible from the Attributes Table.
>> * To display the Attributes Table, I had to convert the .dbf file in
>> .csv and export again as a .dbf.
>> Is there any better way to make this conversion?
>> Cristina Silva
>> Unidade de Recursos Marinhos e Sustentabilidade Av. de Brasmlia, 1449-006
>> Lisboa Portugal
>> Tel.: 351 21 3027096
>> Fax: 351 21 3015948
>> csilva at ipimar.pt
>> [[alternative HTML version deleted]]
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