I have a dataset of 70,000 points and I would like to interpolate the properties as a 3D raster. I have created 'slices' of properties each meter of elevation in the model domain; approx: 200 slices.

The format of the dataset is as follows: BH, EastingNad83, NorthingNad83, Elevation, Property(numerber),Property(text)

(coordinates are in UTM)
The data points are located along boreholes (approx 5000).

I am able to import the data set in Grass Gis. However, I am unable to create the 3D raster using V.Vol.Rst. Is the data set too large for this module?

  • Did you also set the 3rd dimension of the computational region with g.region (b - bottom and t - top parameters)? See grass.osgeo.org/grass74/manuals/…
    – markusN
    Commented May 3, 2018 at 6:04
  • I am wondering if as the data points are stacked above each other (vertical data set) then it just imports one layer (or elevation slice)
    – fanfanGis
    Commented May 6, 2018 at 15:54

1 Answer 1


it was an issue of g.region where you have to provide a value for the resolution for each parameter, and resolution should match if they are referring to the same direction.

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