Is it possible that when you leave the expression editor and recompute the styling the colors accidentally get reversed (e.g. the one for 0 is now 1)? I've had this happen to me a few times.
Would it be possible to take a couple screen shots of the workflow so that we can see exactly what you mean? Jim On 10/01/2015 11:50 AM, David Addy wrote: > I have a query about the use of Rule based styles. > I have a layer of parishes within a county area, which is styled with a > transparent fill. Below it I have a copy layer of the same data. > In both layers the attribute table has a column headed WAPENTAKE, which > holds string data of 25 characters wide. Some of the fields contain a > wapentake name, and the remainder contain NULL. > I want the copy layer to display a certain style when the wapentake contains > a name, but nothing when the column wapentake contains NULL. > > Now comes the problem. If I set the copy layer to a rule based style so that > it will display a coloured shading where there is data in the field > WAPENTAKE, I expect to use the filter of "WAPENTAKE" IS NOT NULL. > This works correctly if I double click on the filter section in the Style > window, and manually edit the filter to this expression. > If instead I open the ellepsis button (...) in order to use the Expression > builder to build the same expression, the result is the reverse of what I > want. IE those with NULL content now show the selected style, and those > that have names in the column show no style. > Can anybody shed light on this issue please? What I am I doing wrong? > > (I am using QGIS 2.8.3 under Windows 7 Professional, 64 bit) > > > > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/Rule-based-styling-issue-tp5227403.html > Sent from the Quantum GIS - User mailing list archive at Nabble.com. > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user > _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
