I'm trying to interpolate with the algorithm "v.surf.idw" in Qgis version 2.18 Las Palmas.
The data that i'm using are points whose coordinates were loaded by a CSV file, these the guade as a new shape type layer. From the attributes of the points I am interested in interpolating with respect to "Rendimiento".
the formats of the attributes are the following:
When I run the algorithm the result is as follows.
When reviewing the registration message this is what it throws.