kriging on street grid

I don't know about road networks, but I know of at least four groups 
that have worked on kriging over river networks, and one or two that 
worked on coastal data using water distance instead of Euclidian 
distance. Googling "kriging river network" gave quite a few hits.
--
Edzer

Dear geo experts,
has anyone looked into kriging of spatial processes that do not live in a 2D
continuum but instead are constrained to a network/graph (e.g. a street
grid) ?
Clearly, distances need to be redefined but more than that, the covariance
matrix is a very different animal.

Thanks!

Markus

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Hello.

 Following papaer may be helpful.

 OKABE, A., SATOH, T. and SUGIHARA, K. "A KERNEL DENSITY
ESTIMATION METHOD FOR NETWORKS,
?ITS COMPUTATIONAL METHOD, AND A GIS-BASED TOOL",
Discussion Paper, No. 80, Center for Spatial Information
Science, Univ. of Tokyo, 
http://www.csis.u-tokyo.ac.jp/dp/89.pdf


 However, this SANET seems to support kriging.

 SANET will be available from
http://ua.t.u-tokyo.ac.jp/okabelab/atsu/sanet/sanet-index.html,
thoughI've nver used it.


Regards.

Dear geo experts,
has anyone looked into kriging of spatial processes
that do not live in a 2D
continuum but instead are constrained to a
network/graph (e.g. a street
grid) ?
Clearly, distances need to be redefined but more
than that, the covariance
matrix is a very different animal.

Thanks!

Markus

	[[alternative HTML version deleted]]

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R-sig-Geo at stat.math.ethz.ch
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