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<p><font size="2">Thanks for the reply. I was planning to generate a surface for each time slice independently, so just x ,y.</font><br>
<font size="2">Siobhan</font><br>
<img width="16" height="16" src="cid:0__=0ABBF2C4DF9018178f9e8a93df@worldbank.org" border="0" alt="Inactive hide details for Re: [R-sig-Geo] using IDW with anisotropy"><font size="2">Re: [R-sig-Geo] using IDW with anisotropy</font><br>
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<b><font size="2" color="#E26200">Edzer Pebesma</font></b></td><td width="1%"><img width="18" height="1" src="cid:2__=0ABBF2C4DF9018178f9e8a93df@worldbank.org" border="0" alt=""><br>
<font size="2" color="#929292">to:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=0ABBF2C4DF9018178f9e8a93df@worldbank.org" border="0" alt=""><br>
<font size="2">r-sig-geo</font></td><td width="1%"><img width="141" height="1" src="cid:2__=0ABBF2C4DF9018178f9e8a93df@worldbank.org" border="0" alt=""><br>
<div align="right"><font size="2">03/17/2011 02:03 PM</font></div></td></tr>
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<font size="2" color="#929292">Sent by:</font></td><td width="100%" valign="middle"><img width="1" height="1" src="cid:2__=0ABBF2C4DF9018178f9e8a93df@worldbank.org" border="0" alt=""><br>
<b><font size="2" color="#E26200">r-sig-geo-bounces@r-project.org</font></b></td></tr>
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<tt><font size="2">Are you interpolating in 3D (x,y,t)?<br>
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On 03/17/2011 04:21 PM, smurray@worldbank.org wrote:<br>
> hello,<br>
> <br>
> I have a timseries dataset of monthly precip data from rain guages. The coverage <br>
> is relatively sparse (approx 30 stations covering the country) and there is <br>
> strong anisotropy in the data - at the monthly timestep data is strongly <br>
> correlated in the E-W direction. Is there any way to use modify the IDW <br>
> interpolation in gstat, to incorporate a directional bias in the distance weight?<br>
> <br>
> many thanks for any suggestions<br>
> <br>
> <br>
> <br>
> <br>
> _______________________________________________<br>
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> R-sig-Geo@r-project.org<br>
> </font></tt><tt><font size="2"><a href="https://stat.ethz.ch/mailman/listinfo/r-sig-geo">https://stat.ethz.ch/mailman/listinfo/r-sig-geo</a></font></tt><tt><font size="2"><br>
<br>
-- <br>
Edzer Pebesma<br>
Institute for Geoinformatics (ifgi), University of Münster<br>
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251<br>
8333081, Fax: +49 251 8339763 </font></tt><tt><font size="2"><a href="http://ifgi.uni-muenster.de">http://ifgi.uni-muenster.de</a></font></tt><tt><font size="2"><br>
</font></tt><tt><font size="2"><a href="http://www.52north.org/geostatistics">http://www.52north.org/geostatistics</a></font></tt><tt><font size="2"> e.pebesma@wwu.de<br>
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