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Re: [udig-users] How to: Merge layers
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On Wednesday 12 November 2008 22:38:40 marulic wrote:
> Thanks Silvia :-)
>
> Copy from layer to layer was my plan but I was hoping for better approach.
> I was playing with Spatial Operations but it didn't help.
>
> Any idea how to select features across several layers? Is it feasible?
>
> Looking forward layer merge option in the future :-)
>
> Marko
>
> Silvia Franceschi-2 wrote:
> > Hi Marko,
> > the easiest way to merge those layers, even if it is not the most clean
> > and
> > nice, is to copy and paste the items from all layers to one.
> > If the attribute table is the same, it should work.
> > I don't know if in uDig there is a specific tool for doing this...
> >
> > Hope this helps
> >
> > Silvia
> >
> > On Mon, Nov 10, 2008 at 9:43 PM, marulic <marulic@xxxxxx> wrote:
> >> I have more then 20 layers I would like to merge in one single layer.
> >> All layers have same data sets (columns).
> >>
> >> The question is how to merge all those layers in single one?
> >>
> >> Thank for all the help :-)
> >>
> >> Marko Marulic
I think a new spatial operation is required (Union). Please, could Marko and
Silvia confirm the following workflow ?
1 - specifying the sources
- select features from source layer 1
- select features from source layer 2
...
- select features from source layer n
2 - specifying the result
- select a a compatible target layer (geometry compatible with source) or
create a new layer
Questions and doubt:
The operation produces features with the source geometries (without changes),
doesn't it?
If a new layer is created the operation could make a new FeatureType using the
feature type 's property of source (this behavior could be an option: copy
data (yes/no)? ).
In the other hand, if an existent layer is selected as target, we cannot
modify its feature type. Options?
cheers
--
Mauricio Pazos
www.axios.es
