Hi Tonino I think this is related to how QGIS takes "null" values in this version: null values are taken as "minus infinite" (-inf), then perhaps it is also taken as "nan" (not a number).
Try to make your work with GRASS plugin. If you are not familiar with it, try to convert "nan" values into zero values. Try this expression with raster calculator: (DEM<0)*0+(DEM>=0) This expression converts values less than zero to 0. If you have layers with different extension, you must be aware about it en raster calc. Good luck Carlos Cerdán 2014-08-12 8:34 GMT-05:00 CONTI Tonino <[email protected]>: > Hi Luis Miguel, > I tried to reduce points and lower the resolution without resolve. > I thought then that it was a problem with the type of data contained in > the field that expresses the elevation. > I then tried to use a number of type double with an accuracy of one > decimal but I have not solved yet. > > Tonino > > > ------------------------------ > *Da:* Luis Miguel Royo Pérez [[email protected]] > *Inviato:* martedì 12 agosto 2014 11.18 > *A:* [email protected] > *Oggetto:* Re: [Qgis-user] spatial interpolation by a shape file of points > > Hello, > maybe I'm wrong, but when I have that message in any software is something > related with RAM. Maybe the raster file created is very large, try to make > one with low resolution. > > Best wishes. > > El 12/08/14 a las #4, CONTI Tonino escribió: > > ing a dem from a point file format in shape. > The raster is not shown but qgis returns the message "bad allocation" and > the legend shows "nan". > > > -- > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user >
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