[Qgis-user] Categorised Styling of PostGIS layers

[McDonaldR]

Morning all,

I'm trying to style some flooding probability data.  It's in PostGIS and I'm using QGIS master (same issue in 2.0 and 2.2 though).  My polygon layer has a probability field with values H, M and L.  If I select a categorised style using the probability field I get the expected three values.  And an extra one.  And the data is drawn using the style of the extra category - in the screenshot the pink lines and not the blues as expected.  If I delete the extra category from the classification table then nothing is drawn on the canvas.  I have checked the field and there are only three unique values in it without nulls or blanks.  The table is properly indexed with a primary key and GIST spatial index.

So, is it a QGIS style engine problem or a PostGIS data problem?  I should add that the same data from PostGIS draws perfectly in ArcGIS 10.2.2 and is styled as expected.

Anyone else had similar experiences?

[If the screenshot is scrubbed by the list then you can see it here: http://openphoto.mixedbredie.net/photo/96/view]





Ross McDonald | GIS Data Coordinator | Resources Department, IT Division | Angus Council, Angus House, Orchardbank Business Park, Forfar, DD8 1AT
T: 01307 476419 | F: 01307 476401 | E: mcdonaldr at angus.gov.uk<mailto:mcdonaldr at angus.gov.uk> | W: Angus Maps<http://www.angus.gov.uk/maps/map_home.cfm>
 
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