Displaying 20 results from an estimated 1000 matches similar to: "OS-dependent behaviour of strucchange?"
2012 May 29
1
strucchange Fstats() example
Dear all,
I'm trying to understand how the strucchange package is working and I have been looking at the examples given for the Fstats() function.
The first example (Nile), shows one peak in the F-stats and one breakpoint is estimated, that can be plotted using the following code
## Nile data with one breakpoint: the annual flows drop in 1898
## because the first Ashwan dam was built
2005 Feb 18
2
Partial structural Change in STRUCCHANGE PACKAGE
Hi,
I am using the Strucchange package in R to test for structural change in regression coeffcient. Given a model y = b0 + b1*X + b2*Z, the Fstats test whether there is a change in both b1 and b2 over a time period.
Is there any way where I can restrict the test to hold b2 constant and test for break in only b1? That is, instead of a pure structural change, could I test for partial structural
2010 Jul 19
2
Help on R strucchange package
Hello,
Im using strucchange package in R software in order to apply Bai and
Peron (1998, 2003) structural break tests to a set of n=1671
observations with a constant term (no AR terms).
For that purpose I have read several papers, for instance Validating
Multiple Structural Change Models An Extended Case Study, in which
its aim is to replicate the results from Bai and Perron (2003) in R
2011 Jul 29
2
'breackpoints' (package 'strucchange'): 2 blocking error messages when using for multiple regression model testing
Good morning to all,
I am encountering a blocking issue when using the function 'breackpoints'
from package 'strucchange'.
*Context:*
I use a data frame, 248 observations of 5 variables, no NA.
I compute a linear model, as y~x1+...+x4
x4 is a dummy variable (0 or 1).
I want to check this model for structural changes.
*Process & issues:*
*First, I used function Fstats.* It
2009 May 12
1
strucchange | weighted models
Greetings -
Am hoping to use the strucchange package to look for structural breaks
in some messy regression data. A series of preliminary analyses indicate
that BLUE for these data will involve some weighting the data (estimates
of a particular population parameter) by a function of the variance of
the estimate (say, inverse of the variance). While I've gone through the
docs for
2011 Sep 13
1
estimating Fstats in strucchange
Hi,
I am new to R. It would be kind if I could get some help on this.
I am using R to estimate Fstats but I am getting following error. a3 is
annual GDP data from 1951 to 2010.
> fs<- Fstats(ecm.model, from=1954, to = 1975,data=a3)
Error in Fstats(ecm.model, from = 1954, to = 1975, data = a3) :
inadmissable change points: 'from' is larger than 'to'
In addition: Warning
2004 Jun 29
1
strucchange-esque inference for glms ?
hello R-world,
according to the strucchange package .pdf, "all procedures in this package are
concerned with testing or assessing deviations from stability in the classical
linear regression model."
i'd like to test/assess deviations from stability in the Poisson model.
is there a way to modify the strucchange package to suit my purposes, or should
i use be using another
2008 Aug 02
1
running strucchange?
Greetings,
I'm complety new to "R" and have a question. I've read through a couple
of manuals but I'm having a problem with getting something run properly.
I'd like to attempt to use the "strucchange" package with some sample data
however I'm having trouble understanding the proper syntax of the commands
from which to do so. I basically want to take
2004 Aug 12
0
updated package strucchange 1.2-4
Dear useRs,
the strucchange package for testing for structural change
has been updated: the current version is 1.2-4.
The most significant additions were two functions gefp()
and efpFunctional().
gefp() implements a class of generalized M-fluctuation
tests for testing for parameter instability or structural
change in general parametric models including generalized
linear models (GLMs).
2004 Aug 12
0
updated package strucchange 1.2-4
Dear useRs,
the strucchange package for testing for structural change
has been updated: the current version is 1.2-4.
The most significant additions were two functions gefp()
and efpFunctional().
gefp() implements a class of generalized M-fluctuation
tests for testing for parameter instability or structural
change in general parametric models including generalized
linear models (GLMs).
2012 Jun 19
1
STRUCCHANGE DETECTING BREAKPOINTS IN A TIME SERIES
HI
i'm trying to detect breaks points in various flow time series, they all
contains seasonality and trend
my question is :
i have to remove this seasonality and trend before apply the function
breakpoints du package strucchange??
another question, the function breakpoints is similar to de Pettit tests ?
or how does it realy works?
THANKS!!!!
DENISSE
--
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2012 Feb 26
1
strucchange breakpoints (Bai and Perron, 1998, 2003)
If I try the breakpoints() function (strucchange package) with a minimum
segment size = the number of regressors, there appears the following error
message:
"minimum segment size must be greater than the number of regressors"
According to the documentation:
"breakpoints implements the algorithm described in Bai & Perron (2003) for
simultaneous estimation of multiple
2006 Jun 03
1
strucchange package for windows
Hi Achim,
I'd like to try to run the strucchange package on R. However, it
seems that the package can only run on systems running Debian and not
Windows XP. Is this true? Or is there a windows version? I downloaded
the strucchange file but they seem to have the dot deb extension and
seem to be designed to run with Debian.
If there is a windows version, could you please let me know how to
2011 May 18
1
strucchange package Linux help
When I run the code below on Macintosh and Windows, the plot comes out
fine. However, on Linux, the png generated is invalid from R console,
and loading strucchange crashes rkward. Is this a known issue on Linux
and, if so, is there a workaround? Many thanks!
require(strucchange)
data("RealInt")
bp.ri <- breakpoints(RealInt~1, h=15)
summary(bp.ri)
fac.ri <- breakfactor(bp.ri,
2001 May 11
0
new package 'strucchange'
There is a new package in the devel-section of CRAN called 'strucchange'
providing functions for testing on structural change in linear
regression relationships.
It features tests/methods from the generalized fluctuation test
framework as well as from the F test (Chow test) framework. This
includes methods to fit, plot and test fluctuation processes (e.g.,
CUSUM, MOSUM, recursive/moving
2013 Jan 20
3
strucchange breakpoints r-squared
Can anyone please tell me how to get the r-squared output from a piecewise
(segmented) regression using the strucchange package? Here is the R code I
have tried thus far.
library(lmtest)
library(strucchange)
data <- ts(c(rnorm(30), runif(30)), frequency = 12, start = c(2005, 01))
bpts <- breakpoints(data ~ 1)
print(bpts)
summary(bpts)
coeftest(bpts)
[[alternative HTML version
2004 Nov 05
1
Error message from vignette strucchange-intro example
Hello,
I am just studying the following example from vignette:
strucchange-intro,
contineousely ending up in an error.
This is the given code:
1. library(strucchange)
2. data(USIncExp)
3. if (!"package:stats" %in% search()) library(ts)
4. USIncExp2 <- window(USIncExp, start = c(1985, 12))
A.Modelling:
coint.res <- residuals(lm(expenditure ~ income, data = USIncExp2))
2009 Dec 22
1
strucchange | breakpoints - pure structural change model?
Dear R-Team,
Am I right supposing that the "breakpoints()" function in the strucchange
package is an implementation of the pure structural change model proposed
by Bai and Perron (1997, 2003)?
My question relates to a partial structural change model that Bai and
Perron formulate in their 2003 paper, e.g. formulated as
y = x' beta + z' delta_j + epsilon,
where beta and delta
2005 Feb 17
1
Multiple Fstats/breakpoints test using Panel data
Hi,
I have recently use the strucchange package in R with a single time series observation. I found it extremely useful in the testing of change points.
Now, I am thinking of using the strucchange package with panel data (about 500 firms, with 73 monthly time series observations each). For each firm, I have to conduct the Fstats and breakpoints tests. Based on the test of each firm, I have to
2011 Oct 09
1
strucchange Nyblom-Hansen Test?
I want to apply Nyblom-Hansen test with the strucchange package, but I don't
know how is the correct way and what is the difference between the following
two approaches (leeding to different results):
data("longley")
# 1. Approach:
sctest(Employed ~ Year + GNP.deflator + GNP + Armed.Forces, data = longley,
type = "Nyblom-Hansen")
#results in:
# Score-based CUSUM