DESCRIPTION
v.vol.idw fills a RASTER3D raster volume matrix with
interpolated values generated from a set of irregularly spaced data
points using numerical approximation (weighted averaging)
techniques. The interpolated value of a tile is determined
by values of nearby data points and the distance of the
cell from those input points. In comparison with other
methods, numerical approximation allows representation of
more complex volumes (particularly those with anomalous
features), restricts the spatial influence of any errors,
and generates the interpolated volume from the data
points.
EXAMPLE
v.vol.idw input=map output=rastermap3d column=col_name npoints=36
SEE ALSO
g.region,
v.in.ascii,
v.in.db,
v.surf.idw,
v.vol.rst,
v.to.rast3
AUTHOR
Jaro Hofierka, Department of Geography and Regional Development,
University of Presov, Presov, Slovakia,
hofierka@geomodel.sk
Modifications for raster3d library and vector format:
Noortheen Raja J, Institute of Remote Sensing,College of Engineering, Guindy,
Anna University, India.
jnoortheen@gmail.com
Last changed: $Date$