Bug reported in: http://hub.qgis.org/issues/9998
Samuel Mesa. 2014-04-02 23:48 GMT-05:00 [email protected] <[email protected]>: > Thanks for your answer Alex. > > regards, > > Samuel Mesa > > > 2014-04-02 22:31 GMT-05:00 Alex Mandel <[email protected]>: > > On 04/02/2014 08:19 PM, [email protected] wrote: >> > Hello. I have a layer of meteorological stations with temporal >> information >> > in PostGIS. Some of the stations have variables with null values. In >> QGIS v2.3 >> > (Ubuntu 13.10), null values are displayed correctly in the attribute >> table. >> > However, when displaying the label is treated as a value of 0, >> similarly when >> > I perform an operation interpolation (IDW algorithm from the raster >> menu), >> > where this result should ignore null values stations. >> > >> > My question is, is this a bug in QGIS?. >> > >> > Attached a screenshot trying to explain the results of interpolation and >> > labeled, possibly wrong with null values. >> > >> > https://drive.google.com/file/d/0B9J3L0xnIeLZLWRtSkJLeXp1RzA >> > >> > regards, >> > >> > Samuel Mesa, >> > >> >> Might be a bug, I would suggest creating a Postgis View that filters out >> the nulls and work with that. >> >> Thanks, >> Alex >> >> > > > -- > --- > .~. > / v \ > // \\ > /( )\ > ^`~'^ > -- --- .~. / v \ // \\ /( )\ ^`~'^
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