Displaying 20 results from an estimated 300 matches similar to: "farimaSim"
2006 Sep 16
1
regarding chaos
hi all,
I have a simple question that does power spectral analysis related to
capacity dimension, information dimension, lyapunov exponent, hurst
exponent.
If yes then please show me the way. I am newbie in the world of chaos.
Sayonara With Smile & With Warm Regards :-)
G a u r a v Y a d a v
Senior Executive Officer,
Economic Research & Surveillance Department,
Clearing
1997 Aug 25
1
R-alpha: HTML help
>> It is looking like a real pain to translate the current set of html files to
>> this format which means that there is going to be some real work required in
>> getting a 3.11 version going.
> Is it possible that the HTML->RTF->WinHelp generation pointer I sent
> you would work faster? Point being that you could generate the RTF
> file on a machine with long
2017 Sep 01
2
user works on DC, not on DM
good morning (here)
At a customer we face the issue that a new user (we tested creating via
RSAT and samba-tool) can't login to the DM server, but works on the DC.
DM: gentoo linux, samba 4.6.7
DC: Debian 9.1, samba 4.6.7
-
on the DM "main":
main ~ # smbclient -L localhost -U hansi%Kwaksi29+
session setup failed: NT_STATUS_LOGON_FAILURE
main ~ # wbinfo -i hansi
failed to call
2004 Dec 13
4
Dispatcher? how to use long urls with slashes to call a controller
Hello rails,
I have a controller called file with a method get that returns me a
file from the db.
want to do the following:
When calling http://localhost:8080/file/get/11/hansi.txt i want that
rails does the same as if i would call
http://localhost:8080/file/get/11
This i not the case. I get a 404.
This is useful as this makes the filename in the browser downloading
the
2010 Oct 06
2
text() background
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;
mso-font-charset:1;
mso-generic-font-family:roman;
mso-font-format:other;
mso-font-pitch:variable;
mso-font-signature:0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;
mso-font-charset:0;
mso-generic-font-family:swiss;
mso-font-pitch:variable;
2000 Feb 08
1
fix() changes character to factor (PR#415)
If x is a data.frame containing a column of mode character, this
column is changed to a factor after applying fix(x).
Example:
R> x_data.frame(a=1:3,b=letters[1:3],c=c("hansi","pepi","karli"))
R> x$c_as.character(x$c)
R> is.character(x$c)
[1] TRUE
R> is.factor(x$c)
[1] FALSE
R> fix(x)
## I change "karli" to "sepp"
R> x$c
[1]
2006 Jul 19
1
fracdiff
Hi, I'm using the function fracdiff and can not figure out how to get the estimated values for sigma2 or confidence intervals for the parameter estimates. Does anyone know how to obtain these values?
Thanks,
Melissa
2003 Jan 29
1
Add-on bug? Win fracdiff failed from http://www.stat.unipg.it/stat/statlib/R/CRAN/ (PR#2504)
Full_Name: Jussi Mäkinen
Version: 1.6.2
OS: Win2000
Submission from: (NULL) (193.210.145.2)
I tried to download fracdiff from http://www.stat.unipg.it/stat/statlib/R/CRAN/
but I got the messages box:
The procedure entry point daxpy_ could not be located in the dynamic link
library R.dll
and the following lines to RGui:
Error in dyn.load(x, as.logical(local), as.logical(now)) :
unable
2004 Feb 17
1
Bug report for fracdiff
I was sniffing in the fracdiff library (this is for fractionally integrated
ARMA processes; Haslett and Raftery 1989).
The documentation suggests that one tries the following simple example:
library(fracdiff)
ts.test <- fracdiff.sim( 5000, ar = .2, ma = -.4, d = .3)
fracdiff( ts.test$series, nar = length(ts.test$ar), nma = length(ts.test$ma))
When I run this, I get the following error:
R
2023 May 31
1
error in arfima...
dear members,
I am using arfima() from forecast package to model a time series. The following is the code:
> LYGH[[202]]
[1] 45.40 3.25 6.50 2.15
> arfima(LYGH[[202]])
Error in .fdcov(x, fdf$d, h, nar = nar, nma = nma, hess = hess, fdf.work = fdf$w) :
NA/NaN/Inf in foreign function call (arg 5)
I tried viewing .fdcov() with the following code:
2002 Jan 09
2
How to obtain the series of residuals from fracdiff
Hi
I'm using fracdiff package to estimate the parameters of a
fractionally-differenced ARIMA (p,d,q) model, and it works fine, but I wanted
to have also the filtered series and the series of residuals.
I understand these are calculated in the subroutine fdfilt, in the program
fdcore.f, but I can't manage to get them out.
Any suggestion would be much appreciated
Thanks
Susana Barbosa
2023 Jun 01
1
error in arfima...
>>>>> akshay kulkarni
>>>>> on Wed, 31 May 2023 20:55:33 +0000 writes:
> dear members,
> I am using arfima() from forecast package to model a time
> series. The following is the code:
>> LYGH[[202]]
> [1] 45.40 3.25 6.50 2.15
>> arfima(LYGH[[202]])
> Error in .fdcov(x, fdf$d, h, nar = nar, nma = nma,
2004 Jun 14
1
forecasting from fracdiff objects
Does anybody know if it is possible to forcast or predict from a
fracdiff object?
Any help would be much obliged...
Cheers,
Alan
2005 Jun 14
1
using forecast() in dse2 with an ARMA model having a trend component
(My apologies if this is a repeated posting. I couldn't find any trace
of my previous attempt in the archive.)
I'm having trouble with forecast() in the dse2 package. It works fine
for me on a model without a trend, but gives me NaN output for the
forecast values when using a model with a trend. An example:
# Set inputs and outputs for the ARMA model fit and test periods
2023 Jun 05
1
error in arfima...
Dear Martin,
Sad that the bug is beyond your ken...
Fortunately, the error happens only rarely...The length of LYGH was 719 and there were only two such errors..I will just replace them with NA and make do.
By the by, what if I send LYGH as an attachment to your actual mail ( not the r-help mail)? Will it help? Can you then pinpoint the cause?
Or should I raise a bug
1999 Nov 03
1
Dimnamenames (PR#257)
I've just started digging into Andreas's old report:
> a <- array(0,c(2,2,2));
> dimnames(a)<-list(hansi=1:2, pepi=c("a","b"), karli=3:4)
> dimnames(a[,,1]) # losing component names
[[1]]
[1] "1" "2"
[[2]]
[1] "a" "b"
Now, this would be fairly easily fixed (I think) which would also make
it compatible with S3.
2009 Feb 20
0
residuals from a fractional arima model and other questions
Dear list and Martin,
I'm testing different approaches to fit an electricity demand time series and come upon the fracdiff package (v 1.3-1) for fitting fractional ARIMA models. The following questions are motivated by this package.
1. Despite having a help page, the residuals and fitted functions don't seem to have implementation, or did i miss something obvious? Alternatively, having a
2005 Mar 23
1
Error in unitrootTest (fSeries)
Hello, I am getting the following error message from unitrootTest.
Do you have any clue of what could be wrong.
Details: AMD64 (x86_64) Gentoo Linux system.
library(fSeries)
kmodel <- list(ar=c(.3,0,0,0,0.7,-.4*.7),d=1)
x=armaSim(nobs,model=kmodel)
unitrootTest(x,trend="c",statistic="t",method="adf",lags=2)
Error in file(file, "r") : unable to open
2005 Nov 21
1
arima prediction
x<-c(-1.873....,-0.121) # 23 numerics;
x.arma12 <- armaFit(x ~ arma(1,2))
#estimates y[t]= -0.11465 - 0.23767 y[t-1] - 0.14230 e[t-1] -0.85770 e[t-2] + e[t];
# ? how to predict 46 steps ahead based on 23 data points?
# the following doesn't work since n is in armaSim rather than armaFit;
predict(x.arima12, n.ahead=46)
# Thanks
---------------------------------
2002 Mar 08
4
ARMA and ARIMA modeling
I'd like to play with ARIMA models of stock prices, but I am a complete novice.
Could some kind soul explain the relationship among packages "ts", "tseries",
"dse", "dse2", and "fracdiff"? Are they 'competing' products or does one
depend on another? Where would be the best place for a novice to begin?
Thanks for any advice.
PS. I