[GRASS-stats] spgrass7 support for strds?

[Rainer M Krug]

Edzer Pebesma <edzer.pebesma at uni-muenster.de> writes:

> On 02/11/2015 02:52 PM, Rainer M Krug wrote:
>> Roger Bivand <Roger.Bivand at nhh.no> writes:
>> 
>>> Since I'm uncertain whether the maintainer of spacetime is on this
>>> list, I'm CC-ing him here. It might make sense to discuss this -
>>> perhaps spgrass7 in the R-forge spgrass project is a logical place to
>>> support these functions?
>> 
>> It is a brilliant idea to support spatio-temporal data in the spgrass7
>> framework.
>> 
>> I agree that the functions should be in spgrass7 and that they should
>> have the same interface structure as the other read/write[RAST/VECT]
>> functions.
>> 
>> I never used the package spacetime or spatio-temporal datasets in GRASS,
>> but maybe these functions could be re-used (or at least parts of it)?
>
> yes; and use the TGRASS (Cc: Soeren, the author), framework. Also,
> raster stacks with time z should be of interest (Cc: Robert).

Please forgive my ignorance - but is there actually an accepted (as
SpatialGridDataFrame et al are accepted) object framework for these
spatio-temporal datasets in R? It sounds as if there is not at the moment?

>
>> 
>> But this should not hold back the release of spgrass7 in it's current
>> form.
>
> I suggest to rename this package to "grass", supporting the current
> grass release.
>
> Grass took 7 years to move 6 to 7; I discussed this with Markus last
> night, they might as well give up this crazy major version release cycle
> idea, with all kind of restrictions they impose on themselves.

This might cause confusion. And as long as GRASS has major versions, I
think we should stick with this naming scheme.

Cheers,

Rainer

>
>> 
>> Cheers,
>> 
>> Rainer
>> 
>>>
>>> Roger
>>>
>>>
>>> On Wed, 11 Feb 2015, Veronica Andreo wrote:
>>>
>>>> Hi
>>>>
>>>> Since you are discussing the new spgrass for GRASS 7 (and since GRASS 7
>>>> includes these great temporal modules), I was wondering if there's any
>>>> chance to include support for reading/writing spatio-temporal data sets.
>>>>
>>>> At present, there are two functions in spacetime package (read.tgrass and
>>>> write.tgrass) that allows reading and writing strds, but you need to export
>>>> it from GRASS first, do the R processing you need, and then, import it back
>>>> into GRASS. To have something a bit more straightforward would be awesome!
>>>>
>>>> I don't know how complicated this could be, that's why I dare to ask :)
>>>>
>>>> Keep the great job you are doing!!! And thanks a lot!!!
>>>>
>>>> Cheers,
>>>> Vero
>>>>
>> 
>> 
>> 
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-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
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email:      Rainer at krugs.de

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