[Gvsig_english] wish: (extended) field statistics

[Wolfgang Qual]

Hi Kenavo,
very interesting! This new version of GDBMS - is it a standalone solution 
written in java? When will it be available (approx.)? 

Regards,
Wolfgang

----------8<---------
Am Montag 26 März 2007 pH:57:20 nachmittags/abends schrieb erwan bocher:
> Hi,
>
> Currently we are working on a new version of GDBMS with Fernando Gonzales
> Cortes the original developer.  The new version will be full SQL 92
> compliant and it will integrate many functionalities for spatial and
> statistical analysis.  In first step GDBMS will be decoupled from gvSIG. In
> the future, if gvSIG team seems that it can be integrated in the roadmap we
> will be happy to synchronize our developments.
>
>
> Kenavo
>
> R1.
>
> On 3/26/07, Alvaro Zabala <azabala at gmail.com> wrote:
> > Actually you can do that with geoprocessing tools.
> > Dissolve->Alphanumeric dissolve->Group by functions.
> >
> > You must select the numeric attributes you want to group by, and the
> > group by function (sum, avg, etc.)
> >
> > The only precondition is that you have a numeric field with the area of
> > the polygons youre going to group by.
> > (future versions will have a geoprocess to add a area and perimter field
> > to polygon layers).
> >
> > Best regards!
> >
> > 2007/3/13, Wolfgang Qual <wolfgang.qual at gmx.net>:
> > > Hi list&developers,
> > > another wish for gvSIG: it would be good, if gvSIG would enable me to
> > > calculate some extended field statistics. An example:
> > > I have a polygon theme with some categories (1-4). Now, I would like to
> > > sum up
> > > all ar eas for these categories - total area of all polygons with cat.
> > > 1,
> > > total area of all polygons with cat. 2, etc.
> > > For dbf-files, I think, this should be possible also in openoffice
> > > (actually,
> > > I do not know how, but I'll looking for a solution), but it would be
> > > nice to
> > > be able to do the same for other file-types (postgresql, ....) -
> > > therefore a
> > > built-in function for this purpose would be nice-to-have for gvSIG.
> > > What do you think?
> > >
> > > Best,
> > > Wolfgang
> > >
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> >
> > --
> > Alvaro Zabala Ordóñez
> > Tlf: 657235082
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