I'm connecting to WFS layer by qgis. On some layer I've got points features and few multi-point features. Whole layer contains about 1000 features, how can I do some query just to know which features is multipoint geometry?
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which version of qgis?– vinayanCommented Jul 19, 2013 at 3:13
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Do you really have a mix of Point and Multipoint features, or do you have all Multipoint features, and you want to select those that have more than one point within them?– smithkmCommented Jul 19, 2013 at 21:05
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@smithkm yes, when I was trying to export to shapefile I've got message, that geometry type is mixed, and I need to default one type of geometry..– KrystianCommented Jul 22, 2013 at 8:18
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1 Answer
Export the Geometries into CSV format with a WKT (well known text) field containing the types. Load the CSV into Spatialite using QGIS's Qspatialite plugin. Run an SQL SELECT WHERE WKT LIKE "something%something" to search for the strings that are indicative of the data types you are looking for.
To create a WKT field, export the shapefile (other formats?) by typing
GEOMETRY=AS_WKT
in the OGR Layer option, of QGIS SAVE AS, then Save As CSV and QGIS.
The WKT field should have the data you build your SQL SELECT statement with.
answered Jul 18, 2013 at 14:08
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thanks, I didnt figure it out before.I saved to geoJSON, and then I've got geometry type by default.– KrystianCommented Jul 22, 2013 at 8:17