Displaying 20 results from an estimated 2000 matches similar to: "topical guide to R packages"
2010 Feb 12
1
R - Compiling and calling Fortran code that uses IMSL libraries - Help!
Good Afternoon R Help!
On of my users is seriously thinking about moving to R from Splus. In his
testing, he has already found some benefits to it. He has, however run
into one issue, calling his Fortran functions in R. Previously, in Splus,
he would do the following:
1. Compile via f90 the *.f program
2. link the object file to the Fortran IMSL libraries via the 'ld' command
3.
2005 Dec 01
1
Kalman Smoothing - time-variant parameters (sspir)
Dear R-brains,
I'm rather new to state-space models and would benefit from the extra
confidence in using the excellent package sspir.
In a one-factor model, If I am trying to do a simple regression where
I assume the intercept is constant and the 'Beta' is changing, how do
I do that? How do i Initialize the filter (i.e. what is appropriate to
set m0, and C0 for the example below)?
2006 Apr 29
1
SSPIR problem
I am having a problem with the package SSPIR. The code below
illustrates it. I keep getting the message: "Error in y - f :
non-conformable arrays."
I tried to tweak the code below in many different ways, for example,
substituting rbind for cbind, and sometimes I get a different error
message, but I could not find a variation of this code that would
work.
Any help will be greatly
2007 Mar 22
2
dynamic linear models in R
Hi all,
I've just started working my way through Mike West and Jeff Harrison's
_Bayesian Forecasting and Dynamic Models_, and I was wondering if
there were any publically-available packages to handle dynamic linear
models, as they describe.
I found the "dynlm" package, but either I don't yet understand what's
going on or that package uses a different sense of the phrase
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)
2007 Mar 26
1
Problem in loading all packages all at once
Hi All
Please see the Rprofile file which i have modified as follows and after
that when I start R then I see that R says to me "TRUE" for all the
packages implying that all loaded at once.
But when i try to use commands as simple as help("lm"), it doesnt work nor
any of the menu "Packages" is not working.
Although the regression using lm ( Y ~ X ) is working
2009 Sep 11
3
State Space models in R
Hello everybody,
I am writing a review paper about State Space models in R, and I would
like to cover as many packages as I reasonably can.
So far I am familiar with the following tools to deal with SS models:
* StructTS, Kalman* (in stats)
* packages dse[1-2]
* package sspir
* package dlm
I would like to have some input from users who work with SS models:
are there any other packages for SS
2006 May 01
1
Problem with optim()
I am having a problem with optim() using the "L-BFGS-B" method. When I
set the lower limit for the third parameter equal to zero I get an
error message:
> low.lim.3 <- 0
> phi_opt <- optim(phi_, model_lik, NULL, method = "L-BFGS-B", lower=c(0.2, -100, low.lim.3, 0), upper= c(10, 100, 10, 10), control = list(maxit = 1000, parscale = c(0.2, u1, 0.002, 0.002), trace =
2006 Jun 15
1
SSPIR problem
Dear R-Users,
I'm using SSPIR package for a spatio-temporal application.
Is it possible to modify the structure of the involved matrixes (Fmat,
Gmat, Vmat,Wmat)?
I want to create a model like this
#y(t)=k*theta(t)+epsilon(t)
#theta(t)=h*theta(t-1)+eta(t)
#epsilon(t) N(0,V) V=sigma2*I
#eta(t) N(0,W) W=sigma2_eta
where the state variable theta has dimension 1(p=1) and at
2011 May 26
1
error message %1 is not a valid Win32 application.
Hi Everyone,
I am trying to work with a routine that is from the IMSL called BSVLS. I
have the file as a .dll file.
I have been trying to call the routine using the dyn.load function. I am
working on a 32-bit windows 7 OS with 3 GB. For some reason i still keep
getting the error message
LoadLibrary %1 is not a valid Win32 application
I looked at previous posting and they were all related to
2000 Jul 26
4
differential equations
Hi, Does somebody knows of the existence of a library of functions
for solving differential equations, I need a solver for a system of non
linear first order differential equations. I think there was something
in IMSL but that was a long time ago and probably there are some
new algorithms in the new now.
Thanks for any pointers.
.
R. Heberto Ghezzo Ph.D.
Meakins-Christie Labs
McGill
2001 Feb 07
1
Microsoft Fortran Powerstation on Linux via Wine
Hi, i'm just starting with Linux, and by ny job I have
to program in Fortran, and I use Microsoft Fortran
Powerstation (an IDE) because of its integrated IMSL
library.
Now I tried to run it from Linux simply with the
command wine msdev.exe, and the first time it worked.
After that when the window starts to open another
window opens with the title "Microsoft Visual C++
Runtime
2007 Jun 12
5
R Book Advice Needed
I am new to using R and would appreciate some advice on
which books to start with to get up to speed on using R.
My Background:
1-C# programmer.
2-Programmed directly using IMSL (Now Visual Numerics).
3- Used in past SPSS and Statistica.
I put together a list but would like to pick the "best of"
and avoid redundancy.
Any suggestions on these books would be helpful (i.e. too much
2005 Feb 19
2
best analysis method : for time series ans cross sectional data
Howdy
What I 'd like to analyze with a large data on building permits is to find
time series effect of urban policy on buildings as well as
cross-sectional effects in any. In 1990 the specialZone urban policy
was introduced. I guess that the effects of this specialZone policy
would be different from countys. There are counties that do not
welcome this specialZone forced to design it.
One of
1997 Oct 24
0
R-beta: Problem with dyn.load/IMSL
I would like to enclose my own C routines to R. I'm using some IMSL Fortran
Routines in my C code, but I can not load the shared IMSL library direct
nor by using -limsl in the ld statement.
Has anyone experiences with loading IMSL Fortran routines to R?
Many thanks
Markus Huerzeler
_______________________________________________________________________________
Markus Huerzeler
2007 Aug 14
2
State Space Modelling
Hey all,
I am trying to work under a State Space form, but I didn't get the help
exactly.
Have anyone eles used this functions?
I was used to work with S-PLUS, but I have some codes I need to adpt.
Thanks alot,
Bernardo
[[alternative HTML version deleted]]
2007 Nov 26
1
CPCA?
It would be great to know if and where an R code for Common Principal Component Analysis is available.
Thanks,
Daniel
Daniel Berner
Redpath Museum & Dept. of Biology
McGill University
859 Sherbrooke St. W.
Montreal, QC, H3A 2K6
Canada
Phone: 514-398-4086 ext. 00908
Fax: 514-398-3185
Email: daniel.berner at mail.mcgill.ca
2009 May 29
0
possible bug in "sspir" package?
Greetings,
I sent the message below to the developer of the contributed R package
"sspir", but have yet to receive any response. I would be very grateful
for any advice people have on the matter.
Thanks,
Mark
-------- Original Message --------
Subject: possible bug in sspir?
Date: Tue, 19 May 2009 16:08:41 -0700
From: Mark Scheuerell <mark.scheuerell at noaa.gov>
To:
2006 Dec 21
0
Spline models in sspir
Dear R-Help,
I'm trying to learn the sspir package for state space modeling. Has
anyone coded a cubic spline smoother (continuous time) in state space
format in sspir? The syntax for setting up the various matrices would be
really helpful.
Best
Simon
--
Simon D.W. Frost, D.Phil.
Assistant Adjunct Professor of Pathology
University of California, San Diego
Mailcode 8208
UCSD Antiviral
2008 Dec 16
1
Cointegration and ECM in Package {urca}
Dear R Core Team,
I am using package {urca} to do cointegration and estimate ECM model,
but I have the following two problems:
(1) I use ca.jo() to do cointegration first and can get the
cointegration rank, alpha and beta. The next step is to test some
restrictions on beta with blrtest(),bh5lrtest(), and bh6lrtest(). But
none of them can add restrictions on all the cointegration