Displaying 9 results from an estimated 9 matches for "arunfrm".
2013 Feb 22
2
Model selection in nonstationary VAR
Folks,
Is there any implementation available in R for the simultaneous selection of lag order and rank of a nonstationary VAR as described in Chao & Phillips (1999): Model selection in partially nonstationary vector autoregressive processes with reduced rank structure, J. Econ. (91).
Or any other systematic procedure for the consistent selection of lag order and cointegration rank?
I
2011 May 12
1
strength of seasonal component
Hi All,
a) Is it possible to estimate the strength of seasonality in timeseries
data. Say I have monthly mean prices of an ten different assets. I decompose
the data using stl() and obtain the seasonal parameter for each month. Is it
possible to order the assets based on the strength of seasonality?
b) which gives a better estimate on seasonality stl() or a robust linear
model like
2011 Jun 28
2
Running R from windows command prompt
1. I have a R program in a file say "functions.R".
I load the "functions.R" file the R using source("function.R") and then call
functionsf1(), f2() etc. which are declared and defined within "function.R"
file.
I also need to load a couple of R libraries using library() before I can
use f1(), f2() etc.
My question is can I acheive all this (i.e. calling
2012 Mar 07
1
VECM simulation
Dear members,
I estimated a vector error correction model (VECM) using the "ca.jo"
function in package "urca". I need to simulate the estimated model using R.
I am aware how to simulate a VAR(p) model. Since the VECM is
in difference form, I can't modify the VAR simulation codes to VECM. May
one help me in this regard please?
Thanks
Mamush
[[alternative HTML version
2012 Dec 23
3
Spammer radhi
This happened two or three weeks ago and it's happening again.
Spammers are using Nabble to attack R-Help. The psts are signed radhi
and the posts' titles are taken from previous posts and therefore seem
authentic but all messages end with "click here". I suggest you don't.
And don't rply to this "radhi"
And again on a weekend.
Rui Barradas
2018 Jan 05
0
Help with Regular expression
...;, "\":\"03-JAN-2018 16:00:00\""),
format = "%d%b%Y%H%M%OS")
[1] "2018-01-03 16:00:00 GMT"
_____________________________________________________
Arun Kumar Saha, FRM
QUANTITATIVE RISK AND HEDGE CONSULTING SPECIALIST
LinkedIn: http://in.linkedin.com/in/ArunFRM
Personal : http://WWW.ARUNSAHA.IN <http://WWW.ARUNSAHA.IN>
_____________________________________________________
[[alternative HTML version deleted]]
2011 Jul 13
3
Colors in R
HI everyone,
I''m trying to assign colors to multiple lines in a graph. Problem is I don''t want to type in as many colors as there are lines....is there a way around this? In brief, I''m plotting the logratio for up to 60 samples and want a different color for each sample. Here is the code I''m using now..
Any help is greatly appreciated..
Best
LT
data <-
2011 Jun 07
2
About DCC-garch model...
Hi, everyone,
I currently run into a problem about DCC-Garch model. I use the package
cc-garch and the function dcc.estimation. One of the output of this function
is DCC matrix, which shows conditional correlation matrix at every time
period you gives. However, I cannot figue out how the function calculate the
conditional correlation matrix at the first time period, since there is no
data to be
2012 Mar 21
3
how calculate seasonal component & cyclic component of time series?
i am new to time series,whatever i know up till now,from that
i have uploaded time series file & what to build arma model,but for that i
want p & q values(orders)
tell me how to calculate best p & q values to find best AIC values for model
i am doing but giving error
>bhavar<-read.table(file.choose()) #taking time series file
> decompose(bhavar$V1)
Error in