Displaying 20 results from an estimated 2000 matches similar to: "Help"
2006 Feb 08
3
Bloomberg Data Import to R
Hi R-Experts,
Can anyone tell me how Bloomberg data can be directly downloaded to R?
Is there any package?
Sumanta Basak.
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2005 Dec 14
1
Kalman Filter Forecast using 'SSPIR'
Dear R Users,
I am new to state-space modeling. I am using SSPIR
package for Kalman Filter. I have a data set containing one dependent
variable and 7 independent variables with 250 data points. I want to use
Kalman Filter for forecast the future values of the dependent variable
using a multiple regression framework. I have used ssm function to
produce the state space (SS)
2006 Feb 06
1
Help In Sequence of Dates
Dear R-users,
First of all, I'm sorry if this is a simple question. I want a daily
date series which will be a sequence. E.g. starting from 07/03/1962 to
12/03/1997. Thanks in advance. I want to paste this date series with the
data series I have.
Thanks & Regards,
Sumanta Basak.
2006 Jan 03
2
KALMAN FILTER HELP
Hi All,
Currently I'm using DSE package for Kalman Filtering. I have a dataset
of one dependent variable and seven other independent variables. I'm
confused at one point. How to declare the input-output series using
TSdata command. Because the given example at page 37 showing some error.
rain <- matrix(rnorm(86*17), 86,17)
radar <- matrix(rnorm(86*5), 86,5)
mydata <-
2006 Mar 07
3
Boxplot Help Needed
Hi R-Experts,
How can I show all the relevant measures like mean, median, min. value,
max. value, outlier in a single boxplot diagram?
Suppose I have a data set c(2,4,5,7,12,14,15,13,8,5,23,98,11)
Sumanta Basak.
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2005 Oct 18
2
FIGARCH
Hi All,
Currently I'm working in FIGARCH process [Fractionally Integrated
Generalized Autoregressive Conditional Heteroscedasticity]. I've already
got the codes to do the process in S-Plus. Can anyone help me to do it
in R?
Thanks,
SUMANTA BASAK.
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2006 Jan 02
1
Use Of makeARIMA
Hi R-Experts,
Currently I'm using an univariate time series in which I'm going to
apply KalmanLike(),KalmanForecast (),KalmanSmooth(), KalmanRun(). For I
use it before makeARIMA () but I don't understand and i don't know to
include the seasonal coefficients. Can anyone help me citing a suitable
example? Thanks in advance.
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2006 Nov 17
2
Large data Problem
Hi R-Experts,
I'm having a problem with reading a large data file which is
in .csv format and size is 120 MB (app.). I was trying to use RODBC
package but I found RODBCconnectExcel function only. And can I convert
this file to .dbf format? How can I read this file? And also let me
know if this was a file in .sas7bdat format, what should I do? Thanks in
advance.
2006 May 08
3
GARCH SIMULATION
Hi All,
I,m trying to do a GARCH simulation in R 2.3.0 release
in Windows XP. I've seen garchsim function but that is
for garch (1,1) and ?garch gives an example for ARCH
simulation. Can anyone help me how can i extend the
help shown in ?garch to GARCH simulation? Please help
me in this regard.
Thanks,
Sumanta Basak.
2006 Jun 16
2
Yahoo data download problem
Hi all R-Experts,
I'm facing one problem in yahoo data downloading. I'm suing Windows XP, R 2.2.0, and i'm using yahoo.get.hist.quote function to download data. I need 500 companies of S&P index daily 'closing price' data for last ten years. My questions are:
1) I have all the ticker names of S&P 500 companies in a .csv format. I'm reading those names in R and
2006 May 12
2
Help In Function
Hi All,
I need a basic help from you. I've built a function like this,
windowlength<-function(x)
{
z <- rep(seq(0,331,by=x-1)+1, each=2)
zz <- z[-c(1,length(z))]
ind <- as.data.frame(matrix(zz, nr=2))
j<-lapply(ind, function(x) mat[x[1]:x[2],])
cat("For",x/4,"month
2006 Apr 06
2
Sort Problem
Hi All,
I have certain combinations for which I have some value, e.g.
0 1 20
0 2 15
1 1 40
1 2 52
Now I need to sort this list for which I'll get the combination against the
lowest value. In this case, 15, and the combination will be 0 2.
--
SUMANTA BASAK.
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2006 Apr 28
3
Break into Parts
Hi R-Experts,
I have a vector of length 72. I want to break it into 12 parts and want to take standerd deviation of each group. Please help me in this regard.
Thanks,
Sumanta.
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2006 May 11
2
Break Matrix
Hi All,
I have a (331*12) matrix. I wan t to braek it into 28 parts each window having 12 rows, so that each matrix become (12*12) matrix. How can i do this.
Thanks,
Sumanta.
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2006 May 12
2
Basic function help
Hi All,
Can you please tell me if i write a function, and want to return certain object, can "R" work on it? I know this works in S-Plus.
function(x)
{ .......
a<-......
reaturn(a)
}
Does this work in "R"?
Thanks,
Sumanta.
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2006 May 29
1
TsayData
Hi,
I'm trying to work with TsayData in fSeries package.
How can i fetch any time series data of this package.
Please advice.
Thanks,
Sumanta Basak.
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2006 Apr 20
1
Extract AIC, BIC
Hi All,
How can extract AIC,BIC from a fitted Garch model?
--
SUMANTA BASAK.
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2006 Mar 31
1
Data File Size Problem
Hi R-Experts,
I have a huge data file of size over 100MB, and this is in .dat format. Is
it possible to work with this in the current version of R in Windows-XP
machine? If not, please let me know the remedy of this. Can R handle large
dataset like this? I know SAS is compatiable for this. But i want to try it
in R.
--
SUMANTA BASAK.
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2006 Apr 11
1
Text Problem
Hi All,
I'm running garch models for different combinations, like (1,1),(1,2) etc.
in a for loop. But, when i'm running it, R is showing a text "*****
ESTIMATION WITH ANALYTICAL GRADIENT ***** ". How can delete it? Any options
for this?
--
SUMANTA BASAK.
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2006 Jun 22
1
Basic NA handling problem
Hi All,
I need your help in NA handling.
I've following data series.
x<-c(1,4,5,8,NA,4,NA,5,5,1,2,7,8,9,NA,NA,NA,15,6,8)
Now i want to interpolate where NA value persists. Like, between 9 and 5 there are three NA's. So, that should be interpolated like,
1st NA-> (15-9)/4
2nd NA-> 1st NA value + (15-9)/4
Can i get help on this using a 'for' loop. Actually i have huge