[Qgis-user] Multiple geometries in an import file

[Tim Sutton]

Hi Zoltan

On Thu, Jul 21, 2011 at 12:45 PM, Zoltan Szecsei <zoltans at geograph.co.za> wrote:
> Hi everyone,
> I have some MID MIF and TAB files that have differing geometries in them
> (ie: points, plines and regions).
>
> QGIS seems to simply (and silently!!!!) stop reading that import file as it
> hits the first non-similar geometry.
>
> Is this the case? (or does it skip other geometries and read the entire file
> reading only the first-found geometry types?)
>

Yes we currently only support 1 geometry type per layer. How mixed
geometries are dealt with is provider dependent.

> Is this an underlying (ogr?) issue, or a QGIS internal data structure issue
> and how can it be solved?
>

Prolly you will need to do something like this:

ogr2ogr out_point.shp mixed.mif -where 'ogr_geometry = "POINT"'
ogr2ogr out_line.shp mixed.mif -where 'ogr_geometry = "LINESTRING"'
ogr2ogr out_poly.shp mixed.mif -where 'ogr_geometry = "POLYGON"'

(Taken from http://trac.osgeo.org/gdal/wiki/FAQVector#HowdoItranslateamixedgeometryfiletoshapefileformat)

Regards

Tim

> Thanks in advance,
> Zoltan
>
> --
>
> ===========================================
> Zoltan Szecsei PrGISc [PGP0031]
> Geograph (Pty) Ltd.
> P.O. Box 7, Muizenberg 7950, South Africa.
>
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>
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>
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