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Statistical consultancy, courses, data analysis and software
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Apologies for cross-posting
There are two places available on a 3-day R course in Newburgh, UK
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Hello,
Why would I get an error message with the following code for gamm? I
want to fit the a gam with different variances per stratum.
library(mgcv)
library(nlme)
Y-rnorm(100)
X-rnorm(100,sd=2)
Z-rep(c(T,F),each=50)
test-gamm(Y~s(X),weights=varIdent(form=~1|Z))
summary(test$lme) #ok
We would like to announce a 3-day R course in the UK. Full details
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Kind regards,
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PLEASE do read the
in Newburgh.
Host: Organised by Highland Statistics Ltd.
Information and registration: www.brodgar.com/statscourse.htm
Kind regards,
Alain Zuur
Dr. Alain F. Zuur
Highland Statistics Ltd.
6 Laverock road
UK - AB41 6FN Newburgh
Tel: 0044 1358 788177
Email: [EMAIL PROTECTED]
Our statistics courses
on this course.
Registration: http://www.brodgar.com/statscourse.htm
Kind regards,
Alain Zuur
Dr. Alain F. Zuur
Highland Statistics Ltd.
6 Laverock road
UK - AB41 6FN Newburgh
Tel: 0044 1358 788177
Email: [EMAIL PROTECTED]
URL: www.highstat.com
URL: www.brodgar.com (Brodgar complies with R GNU license
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
anybody know of a nice test to detect trend turning
points in time
series? Possibly with reference?
Thanks,
joerg
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Dr Alain Zuur
Highland Statistics Ltd.
www.highstat.com
www.brodgar.com
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...which includes your time varying coefficients. You will also
need to
add an optimisation routine on top of the Kalman filter to estimate any unknown
parameters.
Not difficult...requires a bit of programming.
Alain
-
Dr Alain Zuur
Highland Statistics Ltd.
www.highstat.com