[GRASS-stats] Speedup of readVECT6() with plugin

Roger Bivand Roger.Bivand at nhh.no
Mon Jun 23 16:36:01 EDT 2008


I've submitted spgrass6_0.5-9.tar.gz to CRAN, so barring accidents it 
should be out soon. If you're using the raster or vector plugins and have 
comments, please let me know - look for the new plugin= argument, which is 
FALSE by default to avoid problems, but can be NULL for autodetection, or 
TRUE to force use if the plugin is known to be available.

Roger

On Sun, 22 Jun 2008, Markus Neteler wrote:

> Dear Roger,
>
> On Mon, Jun 2, 2008 at 10:03 AM, Roger Bivand <Roger.Bivand at nhh.no> wrote:
>> On Sun, 1 Jun 2008, Markus Neteler wrote:
>>>>>>>> On Sat, 31 May 2008, Markus Neteler wrote:
>>>>>>>>> I have to read in Lidar data from GRASS, so speed matters. I have
>>>>>>>>> modified the readVECT6() function to not export to SHAPE but
>>>>>>>>> read in directly via GRASS-GDAL/OGR plugin:
> ...
>>> thanks for the high speed rewrite of the interface. Downloaded and
>>> installed
>>> successfully (I see the new message
>>> "GRASS GIS interface loaded with GRASS version: 6.4.svn"
>>> ).
>>>
>>>> or a variant that works. The vector version looks OK,
>>>
>
>> Markus,
>>
>> For now, the plugin= argument defaults to FALSE. If NULL, it will
>> autodetect, if TRUE, it will try to use the plugin or fail. To avoid
>> breaking things for users with a plugin but scripts that might break, I set
>> plugin=FALSE for now. Once we have some experience, I'll increment the
>> version number from 0.5-* to 0.6-1, and set plugin=NULL by default.
>>
>
> I have partially reinstalled R here. Should I continue to use the CVS
> version for this improvement? I feel that things won't be tested widely
> unless the code isn't easily available (i.e. CRAN).
>
> Best wishes
> Markus
>

-- 
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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