urca package - summary method -

Hi

 I am using the package urca and I am interested about the KPSS test.
 That works fine except the method "summary" did not work in 
the script,
 only when it is typed direct in the console the results are 
shown( not a
 source file).

Hello,

which version of urca are using? The problem you mentioned has been
fixed in November  last last year (see R-Help, there is an extensive
thread about the explicit loading of methods as well as the Changelog of
urca:

2006-11-04  Dr. Bernhard Pfaff  <bernhard at pfaffikus.de>

	* NAMESPACE: import(methods) inserted
).

I have checked again with:

<file kpsstest.R>
library(urca)
data(nporg)
gnp <- na.omit(nporg[, "gnp.r"])
gnp.l <- log(gnp)
kpss.gnp <- ur.kpss(gnp.l, type="tau", lags="short")
summary(kpss.gnp)
summary(ur.kpss(gnp.l, type="tau", lags="short"))
<end file>

and

R CMD BATCH --no-restore kpsstest.R

which runs flawlessly. Hence, a simple update of 'urca' should solve
your problem.

Best,
Bernhard

 Is there any problem with these method ?

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