[Gvsig_english] from multipoint to point shape

[Johannes Valenta]

Hi all,

I tried to use *geometries to points* but Sextante won't accept my
multipoint layer  which I created in gvSIG.
While Antonio was answering I found the follwing "not so complicated"
workaround:
-export multipoint shp to PostGIS
-use this SQL-Statment:
"SELECT ST_X(geom) As x, ST_Y(geom) as y
FROM (SELECT (ST_Dump(mpt.the_geom)).geom
   FROM multipointtest mpt)AS mpt;"
this will explode the multipoints into points (function ST_Dump) and
create  the coordinates columns (functions ST_X and ST_Y)
-Export the results as csv
-Add csv as Event Layer in gvSIG
- be happy ;-)
see screenshot

Best,
Johannes

PS: I  still use 1.1.2


2009/8/28 Antonio Falciano <afalciano at yahoo.it>

> Wolfgang Qual ha scritto:
> > Hello Jean,
> > hm. right. I would suggest to write a feature request to this list. I
> > could imagine that it is not that complicated to write a function for
> > this purpose.
> > However, I am not a developer. Therefore, I would be very glad, if one
> > of the developers could comment this issue - ...
> > gvSIG allows to create new multipoint features, but will it allow to
> > convert multipart shapefiles to singlepart? Will it be possible to
> > write a nice script for this purpose once the new 2.0 is available?
> > Maybe it is more complex than I think. ogr2ogr does not allow the user
> > to do this conversion...
> > Any comments would be great.
>
> Hi all,
> you can try with "Geometries to Points" tool of Sextante.
>
> Best regards,
> Antonio
>
> > Best,
> > Wolfgang
> >
> >
> > Jean Hemmi schrieb:
> >> Hi Wolfgang,
> >> The Sextant option you've proposed does not change the shapefile type
> from
> >> multipoint to point...
> >> It explose the points in many shp files.
> >>
> >> Has anybody an idea to change MULPOINT to POINT ?
> >> ogr2ogr refuse... Gvsig ?
> >>
> >> This thread is not about Sextant on 1.2 and 1.9...
> >>
> >> Thanks for your help.
> >>
> >> Jean
> >>
>
> --
> Antonio Falciano
> http://www.linkedin.com/in/antoniofalciano
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