[R-sig-Geo] variogramST does not like STIDF

[Edzer Pebesma]

On 10/04/2012 04:54 PM, Bruin, Sytze de wrote:
> Dear all,
> 
> 
> 
> I intend to compute a space-time variogram from irregularly spaced data. I created a STIDF object for that (package stacetime), but gstat's function "variogram" only seems to only accept STSDF or STFDF objects as data. The following message was generated: Error: is(data, "STFDF") || is(data, "STSDF") is not TRUE. A solution would be to first coerce the STIDF to STSDF --which is wat I am doing-- but is there a reason why variogram does not accept STIDF?
> 
Sytze,

The reason is that nobody has implemented it, so far, and this is the
first time someone asks.

When you're done coercing, please let me know whether you still think
there is a need for computing variograms from STIDF data.
-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763  http://ifgi.uni-muenster.de
http://www.52north.org/geostatistics      e.pebesma at wwu.de