Displaying 20 results from an estimated 300 matches similar to: "if function problems"
2008 Nov 22
1
Need some help in R programming code
Dear R guru,
I am Saikat Sarkar working as a researcher of Economics in Tampere
University, Finland. I am trying to estimate some Garch related tests with
Bayesian analysis by R programme.
I am not good in R but trying to survive.
Anyway I have the coding but not working properly. I have tried to find the
problem but failed. I am writing to all R gurus to help me out.
Could you please look at
2009 Jul 15
1
Is it possible to use EGARCH and GJR in R?
Hi,
Could you please help me with EGARCH and GJR?
Is it possible to use EGARCH and GJR in R? I have used below mentioned
code
for GARCH in R, but I never used EGARCH and GJR in R.
Thank you in advance!
daten<-read.table("H://Daten//Zeitreihen//dax_1.csv", sep=";", header=T)
DAX.kurs<-daten
DAX.kurs<-ts(DAX.kurs,names="DAX-Kurs")
2005 Aug 18
1
code a family of garch
Dear R-helpers,
I was wondering if anyone has or knows someone who might have an
implementation
of algorithm for estimating garcht-t, egarch and gjr models. I try to
use Fseries but I don't know how to code these models.
Thanks a million in advance,
Sincerely,
Nongluck
2005 Feb 22
1
Does R has the function for garch-t, gjr-garch, qgarch and egarch
Dear all,
I would like to know that R has the function for garch-t,gjr-
garch,qgarch and egarch.
Best Regards,
Luck
2005 Jul 02
1
how to call sas in R
Hello all,
I would like to know how to call sas code in R. Since I simulate data in
R and I need to use sas code (garch-t,egarch and gjr) to estimate it. I
need to simulate 500 times with 2000 obs. How I can call that code in
R.Also, how I can keep the parameters from the estimate.
j=1:500
i=1:2000
sas code
keep parameters.
Best Appreciate,
Luck
2011 Sep 28
1
fGarch - Fitting and APARCH-Modell with fixed delta
Hi there,
I'm trying to fit a GJR-GARCH Model using fGarch. I wanted to try that by
fitting an APARCH model with a fixed delta of 2 and a non-fixed gamma. So I
was simply trying to use:
spec <- garchFit(~aparch(1,1),data=garchSim(),delta=2)
coef(spec)
And sometimes, it's working like a charm and delta is indeed exactly 2 in
the resulting coefficient vector.
Frequently, though, the
2012 Oct 26
1
asking about R Code
Hi, my name is Ellen. I want to ask you about R Code.
I got a code for extracting a pixel value, but I can't compile it..
It is said "Error in is.data.frame(x) : object 'lena' not found"
Here is the original full code:
library(pixmap)
lena <- read.pnm("oldlennablur.pgm")
write.table(lena@grey,"mylenna", quote=FALSE, row.names = FALSE, col.names=
2004 Jun 23
2
Covered Labels
Dear All!
How can I cope with overlapping or covered labels (covered by labels
from other data points) in plots?
Martina Renninger
[[alternative HTML version deleted]]
2009 Dec 17
2
Which hist cell each value falls in?
Hi, all. I'm using hist() to obtain a vector of break values in an interval.
I then want to be able to identify which cell any value from another vector
falls in.
E.g. applying
> breaks
[1] -3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0
to
> x
[1] -3.74519666 -0.38183630 -1.22884247 -0.20971824 -0.30533939 -0.36271207
[7] -2.27513499 -2.23688653 -1.98827155 -1.48666274
2001 Aug 13
1
export-problem
Hello!
I am trying to export a data-file from SAS to R. It says in the R program
that the SAS file should be in XPORT-format. I assume that the file should
have and .xpt extension. But when I try to open the file in R I get only
the message "compressed" written all over. So, probably I should
un-compress the file in the R-program, the question is how?
Very greatful for quick help!
2011 Nov 27
0
Need Help with my Code for complex GARCH (GJR)
Hello,
i want to estimate a complex GARCH-model (see below).
http://r.789695.n4.nabble.com/file/n4112396/GJR_Garch.png
W stands for the Day of the Week Dummies. r stands for returns of stock
market indices. I stands for the GJR-term.
I need some help with three problems:
1.) implementation of the GJR-term in the variance equation
2.) compute robust covariance matrix
2006 Aug 11
2
Colour-coding intervals on a line
Hi,
This is a simple version of something that I am trying to do. If I can
sort the problem basically, I figure I should be able to sort it for the
program I'm writing (which would take longer to explain).
I need to know if there is any way of using different colours for
different intervals of a line on a graph. Eg. If I plot the line y=x for
x=1:10, and split this line into 106 intervals
2011 Sep 01
0
qqplot for count data
Dear list,
I just tried to do the same thing, and did not find anything on a
weighted qqplot. My weights are actually counts (positive integers).
Here is a modification of qqplot, following Duncan Murdoch's
suggestion. Any feedback would be welcome!
Thanks,
Jean-Christophe
weighted.qqplot <- function (x, y,
plot.it = TRUE, xlab = deparse(substitute(x)),
ylab = deparse(substitute(y)),
2009 Oct 19
2
Time Series Data
Hi all and thanks in advance.
I am regressing Time and Weight, and then predicting Weight at
different Time. The format of the Time data is day/month/year. How
can I get R to use time series data such as this?
Keith
--
M. Keith Cox, Ph.D.
Alaska NOAA Fisheries, National Marine Fisheries Service
Auke Bay Laboratories
17109 Pt. Lena Loop Rd.
Juneau, AK 99801
Keith.Cox at noaa.gov
marlinkcox at
2018 Jan 19
0
Bayesian Analysis in GJR-GARCH (p, d) model with Student-t innovations
Good day Ma'am/Sir, I am Resa Mae R. Sangco a Master of Statistics student
from the MSU- Iligan Institute of Technology located in Iligan City,
Philippines. I am currently doing my thesis entitled ?Bayesian Analysis in
GJR-GARCH (p,d) model with Student-t innovations". In finding my posterior
distribution since it is hard to integrate, I use Markov Chain Monte Carlo
simulation
2010 Oct 05
1
Tukey HSD Test als Post Hoc Test nach einem GLM inkl. Anova
Hallo,
zur Analyse von Daten zum Artenreichtum von Pflanzen, habe ich ein Glm (glm)
und anschlie?end eine Anova (anova) durchgef??hrt. Nun m??chte ich f??r die
signifikanten Einflussfaktoren einen Post Hoc Tukey Test durchf??hren, um zu
ermitteln in wie weit die einzelnen Faktorstufen sich signifikant
voneinander unterscheiden.
Mit dem Befehl (TukeyHSD) komme ich nicht
2009 May 18
8
Simple plotting errors
Dear R Users,
I have 12 data frames, each of 12 rows and 2 columns.
e.g. FeketeJAN
MEAN SUM_
AMAZON 144.4997874 68348.4
NILE 5.4701955 1394.9
CONGO 71.3670036 21196.0
MISSISSIPPI 18.9273250 6511.0
AMUR 1.8426874 466.2
PARANA 58.3835497 13486.6
YENISEI 1.4668313 592.6
OB 1.4239179 559.6
LENA 0.9342164
2008 Nov 23
0
why this function give error message
Dear R guru,
I am Saikat Sarkar working as a researcher of Economics in Tampere
University, Finland. I am trying to estimate some Garch related tests with
Bayesian analysis by R programme.
I am not good in R but trying to survive.
Anyway I have the coding but not working properly. I have tried to find the
problem but failed. I am writing to all R gurus to help me out.
Could you please look at
1998 May 29
0
aov design questions
R developers,
I have a first attempt to make an aov function. Eventually I want to
build in Error() structure, but first I am trying to get this
presentable for balanced data with only a single stratum, just using
residual error. I am following R. M. Heiberger's Computation for the
Analysis of Designed Experiments, Wiley (1989)
I a using a wrapper (aov.bal) to call the
2007 Dec 26
1
probability from different values
Hi all,
i'm new R user and i need some help:
i have two vectors (A and B) and i need create another vector (C) from the subtraction of A's values with the B's values. How can i estimate the probability of C's values if i have differents values combinations of A and B that can result in the same value? like 90 -20 = 70 and 91 - 21 = 70.
example:
B = {18 18 18 19