Dear friends,
I'm conducting some spatio-temporal/space-time analysis for point pattern
data, and the following functions maybe used to do it.
Anybody knows some other functions/methods for spatio-temporal/space-time
analysis in R?
stkhat (splancs)
Space-time K-functions
stmctest (splancs)
See the help for the interp() function in the akima package. It has
some examples that should be reasonably easy to follow.
-Don
At 2:48 PM +0200 9/12/07, Andre Jung wrote:
>Hello,
>
>I'm dealing with the following problem:
>
>I have a table with x and y coordinates and corresponding values of a
Edzer and List,
Success! Thanks so much to Edzer and all who took the time to write.
I adjusted the x coordinates by a small amount such that no two x
coordinates were exactly the same, then recalculated the covariance
matrix and the negative eigenvalues disappeared.
However several case
Edzer,
Thanks again, sorry if I misread you. Thanks also to James Holland
Jones and Christopher Paciorek who responded with helpful comments. I
will read over all of these and give it another try.
Keith
-Original Message-
From: Edzer J. Pebesma [mailto:[EMAIL PROTECTED]
Sent: Wedn
Hello,
I'm dealing with the following problem:
I have a table with x and y coordinates and corresponding values of a
mineral concentration, let's call it z.
Can someone provide me a short step-by-step manual for the steps
necessary to get a contour map?
How to sort and interpolate my matrix t
Keith, read my suggestion good; I didn't suggest replacing all zeroes in
the distance matrix! You either rearrange points and recompute
distances, or modify off-diagonal zero-distance entries in the
covariance matrix.
Sounds like you modified the zero entries on the diagonal as well.
--
Edzer
