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

Fri Dec 10 18:49:22 CET 2010

Roger,

I was not aware that 1.8dev is actually older than 1.7.2
I'll check why I have that gdal on the other machine and will try
to fix that on my side on Monday. But perhaps this problem will come up
again for future stable versions of 1.8.* ? Anyway, 1.8dev is clearly not a good
choice and I have to change it.

Thanks

Agus

2010/12/10 Roger Bivand <Roger.Bivand at nhh.no>:
> On Fri, 10 Dec 2010, Agustin Lobo wrote:
>
>> Roger,
>>
>> is this all you need? I thought sessionInfo was providing everything
>> needed.
>
> You had given sessionInfo() but that does not report which GDAL you are
> using. The report unfortunately does not give an svn revision, maybe
> gdal-config --version does? I develop using 1.7.* GDAL. Your 1.8dev is
> pretty old, certainly older that released 1.7.3. I can try to build a
> current GDAL trunk from source next week, if I get time, but this looks like
> something in your setup (development GDAL that is now stale?).
>
>> The driver is "ESRI Shapefile" as stated in the command, have not tested
>> any other (it does work for raster though, as you mention):
>
> I mentioned four variants of vector drivers, not raster.
>
> Roger
>
>>
>>> 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
>>>>>> 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
>>>>>
>>>>> _______________________________________________
>>>>> 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
>>>
>>> _______________________________________________
>>> 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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