[Gvsig_english] from multipoint to point shape

[Luigi Castro Cardeles]

Hi,

you could use qgis, plugin ftools -> multi to single parts.

[]'s
Luigi Castro Cardeles


2009/8/28 Johannes Valenta <spatialjoe at googlemail.com>

> Hi Wolfgang, list,
>
> geometries2points should be located at "tools for vector layers".
> Unfortunately I do not know how to figure out which Sextante version I am
> using. It is the one with 241 algorithms.
> I just checked this function with one plain polygon and it worked properly
> delivering all vertices as points. Nice, I should use this more often ;-)
> Maybe dealing with multi-part features is not implemented?
>
> Best,
>
> Johannes
>
> 2009/8/28 Wolfgang Qual <Wolfgang.Qual at muenchen.de>
>
> Hi Johannes,
>> I did not even _find_ the function geometries to points - ...
>>
>> Beste,
>> Wolfgang
>>
>> Johannes Valenta schrieb:
>>
>>> 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 <mailto:
>>> 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
>>>    _______________________________________________
>>>    Gvsig_internacional mailing list
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>>>
>>>
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>>
>> --
>>
>>        *Wolfgang Qual
>>
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