[R-sig-Geo] Suggestion: option overwrite=T for writeOGR()

[Agustin Lobo]

Roger,

is this all you need? I thought sessionInfo was providing everything
needed. The driver is
"ESRI Shapefile" as stated in the command, have not tested any other
(it does work for
raster though, as you mention):

> require(rgdal)
Loading required package: rgdal
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 1.8dev, released 2010/01/19
Path to GDAL shared files: /usr/local/share/gdal
Loaded PROJ.4 runtime: Rel. 4.7.1, 23 September 2009
Path to PROJ.4 shared files: (autodetected)

Thanks

Agus

2010/12/10 Roger Bivand <Roger.Bivand at nhh.no>:
> On Fri, 10 Dec 2010, Agustin Lobo wrote:
>
>> Roger,
>>
>> It does not for me. The error is solved by deleting files xygcatLO.* ,
>> while directory xygcatLO may continue to exist.
>
> Agus,
>
> With which drivers, OGR version (in header when rgdal loads)? If I cannot
> reproduce this, I cannot readily help.
>
> Roger
>
>>
>> Also, I've found that with this version the below command does not
>> save the files within
>> the folder indicated by dsn, but outside. This was not the case in the
>> past, but do not know if this is
>> because of a change in rgdal, gdal or ubuntu 10.04 (I've changed all 3
>> since the last time I used writeOGR()).
>>
>>> writeOGR(xygcatLO,dsn="xygcatLO",layer="xygcatLO", driver="ESRI
>>> Shapefile")
>>
>> Error in writeOGR(xygcatLO, dsn = "xygcatLO", layer = "xygcatLO",
>> driver = "ESRI Shapefile") :
>>
>>        GDAL Error 1: Layer 'xygcatLO' already exists
>> Calls: writeOGR -> .Call
>>
>>> sessionInfo()
>>
>> R version 2.12.0 (2010-10-15)
>> Platform: x86_64-pc-linux-gnu (64-bit)
>>
>> locale:
>> [1] LC_CTYPE=en_US.utf8          LC_NUMERIC=C
>> [3] LC_TIME=en_US.utf8           LC_COLLATE=en_US.utf8
>> [5] LC_MONETARY=en_US.utf8       LC_MESSAGES=en_US.utf8
>> [7] LC_PAPER=en_US.utf8          LC_NAME=en_US.utf8
>> [9] LC_ADDRESS=en_US.utf8        LC_TELEPHONE=en_US.utf8
>> [11] LC_MEASUREMENT=en_US.utf8    LC_IDENTIFICATION=en_US.utf8
>>
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>
>> other attached packages:
>> [1] RANN_2.1.2      outliers_0.13-3 rgdal_0.6-30    raster_1.7-2
>> [5] sp_0.9-73       rkward_0.5.4
>>
>> loaded via a namespace (and not attached):
>> [1] grid_2.12.0     lattice_0.19-13 tools_2.12.0
>> 2010/12/10 Roger Bivand <Roger.Bivand at nhh.no>:
>>>
>>> On Thu, 9 Dec 2010, Barry Rowlingson wrote:
>>>
>>>> On Thu, Dec 9, 2010 at 8:56 AM, Agustin Lobo <alobolistas at gmail.com>
>>>> wrote:
>>>>>
>>>>> Hi!
>>>>>
>>>>> Could an option overwrite=T (default overwrite=F) be included in
>>>>> writeOGR()?
>>>>> Thanks!
>>>>
>>>> Submit a Feature Request here:
>>>>
>>>> http://sourceforge.net/tracker/?group_id=84716&atid=573625
>>>
>>> No, rgdal is on R-Forge, and a list called rgdal-devel will be available
>>> from tomorrow.
>>>
>>>>
>>>> It looks like it just needs to be a wrapper around OGR's delete layer
>>>> function.
>>>
>>> Contributions welcome. Note that the facility is present for rasters,
>>> which
>>> I fould out by accidentally deleting GRASS database objects (for which of
>>> course I did not have backups). Is this really needed - which drivers do
>>> not
>>> already overwrite without complaint? These do not complain for me:
>>> driver="ESRI Shapefile"; driver="KML"; driver="MapInfo File";
>>> driver="MapInfo File", dataset_options="FORMAT=MIF".
>>>
>>> Hope this helps,
>>>
>>> Roger
>>>
>>>>
>>>> Barry
>>>>
>>>> _______________________________________________
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>>>> R-sig-Geo at r-project.org
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>>>>
>>>
>>> --
>>> Roger Bivand
>>> Economic Geography Section, Department of Economics, Norwegian School of
>>> Economics and Business Administration, Helleveien 30, N-5045 Bergen,
>>> Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
>>> e-mail: Roger.Bivand at nhh.no
>>>
>>> _______________________________________________
>>> R-sig-Geo mailing list
>>> R-sig-Geo at r-project.org
>>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>>
>>
>
> --
> Roger Bivand
> Economic Geography Section, Department of Economics, Norwegian School of
> Economics and Business Administration, Helleveien 30, N-5045 Bergen,
> Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
> e-mail: Roger.Bivand at nhh.no
>
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