[GRASSLIST:5399] s.vol.rst

GRASS GRASS user
1

hi

I've interpolated precipitation data with r.vol.rst.
what is the advantage of this volumetric interpolation over a 2D
interpolation
(e.g. s.surf.rst) for precipitation data? s.vol.rst does not consider the
orography, does it? Is there a benefit using s.vol.rst instead of s.surf.rst
if I only need a 2D raster output?

thanks
christoph

2

Christoph Hoesli wrote:

hi

I've interpolated precipitation data with r.vol.rst.
what is the advantage of this volumetric interpolation over a 2D
interpolation
(e.g. s.surf.rst) for precipitation data? s.vol.rst does not consider the
orography, does it? Is there a benefit using s.vol.rst instead of s.surf.rst
if I only need a 2D raster output?

thanks
christoph

Hi,

details about volumetric interpolation of precipitation data using s.vol.rst can be found in this paper:

Hofierka J., Parajka J., Mitasova H., Mitas L., (2002): Multivariate Interpolation of Precipitation Using Regularized Spline with Tension. Transactions in GIS 6, pp. 135-150.

Examples and short explanation is also in GRASS book written by Markus and Helena:

Neteler, M., Mitasova, H.: Open Source GIS: A GRASS GIS Approach. Kluwer Academic Publishers Boston, 2002, 464 p.

Jaro