Thanks for your answer Alex. regards,
Samuel Mesa 2014-04-02 22:31 GMT-05:00 Alex Mandel <tech_...@wildintellect.com>: > On 04/02/2014 08:19 PM, samuelm...@gmail.com 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 \ // \\ /( )\ ^`~'^
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