Displaying 20 results from an estimated 110 matches similar to: "mFilter package"
2006 Dec 20
1
help for multinominal logistic regression code
Dear all,
firstly I would like to say I am a beginner user for R and also naturally a new member of this mail list. This means I have newer read previous mails before.
I need a small help for my analysis. I want to perform a multinominal logistic regression for my data set. But as I told before I am a beginner for R and I couldn't find the code for multinominal logistic
2003 Jan 15
1
multiply matrix by a scalar
This is not the correct group to post this question. Sorry, but I
subscribe nowhere else.
What is the BLAS routine to multiply a matrix by a scalar?
Thanks.
--
Mehmet Balcilar, PhD
Assistant Professor
Manas University
College of Economics & Administrative Sciences
Department of Economics
Prospect Tinctik 56
Bishkek
Kyrgyzstan
Tel: +996 (312) 54 19 42
+996 (312) 54 19 43
+996
2009 Apr 02
1
Time series analysis with irregular time-series
Dear R users
I am currently investigating time series analysis using an irregular time series. Our study is looking at vegetation change in areas of alien vegetation growth after clearing events. The irregular time series is sourced from Landsat ETM+ data, over a six year period I have 38 scenes. For certain periods I have monthly data while for others, images are up to three months apart. So far
1999 Oct 31
1
bug in filter function
I think filter function in ts library has a typo. Line 34 in filter.R
reads
if(NROW(init) != 1 && NROW(init) != nser)
I guess it should be
if(NCOL(init) != 1 && NCOL(init) != nser)
Please let me know, if I am wrong.
Mehmet Balcilar
______________________________________________________
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2002 Aug 13
1
R CMD check: Too long [R] code line generated (PR#1900)
Full_Name: Henrik Bengtsson
Version: 1.5.1
OS: WinMe
Submission from: (NULL) (217.210.0.243)
In the Perl script $R_HOME/bin/check there is a bug under the section "Check R
code for syntax errors" where the 'Rfiles <- c(...)' is build up. If there are
too many files in @Rfiles the source code line generated will be too long and
weird things will happen, e.g. strange
2013 Apr 10
1
question re: error message --- package error: "functionName" not resolved from current namespace
hello everyone
we are developing a package that has worked up until R3.0 which we just
tested.
the issue is as above .... when we call a function that works in R 2.15.2
from R 3.0 we get an error
Error in .Call("antsImageRead", filename, pixeltype, dimension) :
"antsImageRead" not resolved from current namespace (ANTsR)
this Error occurs when the .Call is made from
2002 Aug 14
1
FW: R CMD check: Too long [R] code line generated (PR#1900)
On Wed, 14 Aug 2002, Henrik Bengtsson wrote:
> Sorry, but it was indeed the redirection of the standard output in
> Cygwin/bash that cause the first problem, not R (I should stop doing
> troubleshooting at 1:00 AM). So please forget about the problems reported in
> R_CMD_check.out. However, it would still be nice if you still update R CMD
> check to do join with "\n".
2002 Aug 14
0
source() crashes on long lines (PR#1900)
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2004 Jan 20
1
random forest question
Hi,
here are three results of random forest (version 4.0-1).
The results seem to be more or less the same which is strange because I
changed the classwt.
I hoped that for example classwt=c(0.45,0.1,0.45) would result in fewer
cases classified as class 2. Did I understand something wrong?
Christian
x1rf <- randomForest(x=as.data.frame(mfilters[cvtrain,]),
2004 Jan 19
1
qda problem
Hi,
the following strange error appears when I use qda:
> qda1 <- qda(as.data.frame(mfilters[cvtrain,]),as.factor(traingroups))
Error: function is not a closure
That's also strange:
> qda1 <- qda(mfilters[cvtrain,],as.factor(traingroups))
Error in qda.default(mfilters[cvtrain, ], as.factor(traingroups)) :
length of dimnames must match that of dims
Some backgroud:
>
2005 Nov 22
2
ipfw check-state issue
heya
i've been using freebsd's ipfw for quite a while and recently on a new
server i've got this issue with ipfw that i can't understand ... something
is wrong ...
01000 8042 1947866 allow ip from any to any via fxp0
01010 0 0 allow ip from any to any via lo0
01014 9886 4170269 divert 8668 ip from any to any in via vr0
01015 0 0 check-state
01130 14679 5695969 skipto 1800 ip from
2011 Apr 29
1
Analysis and graphics by groups
Hello,
This is my first post in this e-mail list and I hope it's enough to justify
calling for help. In case it's not, sorry.
I'm trying to do analysis and graphics using a factor as a criteria to split
data and do the analysis/graphics for each subset of data.
Right now what I'm trying to do is to fit and plot the following logistic
model, according to a third variable named
2009 Jul 25
3
how to smooth timeseries without the lagging?
Hi all,
If I use a moving average, it will smooth the choppy time series, but
it will lead to lagging...
How do I smooth timeseries without the lagging effect?
Thanks!
2010 Dec 20
2
Sine Regression in R
Hi everyone,
I am trying to fit a sine function on one year of wind data. I have two
questions below.
Looking around on the net I managed to get the following:
Sine Equation: y = a + b * sin( c + d*x )
b is the amplitude, c is the phase shift, d is something deal with
periodicty of data*.*
This can be linearised by sin( c+dx ) = cos(c) * sin(dx) + sin(c) *
cos(dx).
If one calls dx = x1
y
2009 Nov 17
1
How to do Hodrick-Prescott Filter in R?
Dear All,
How to do Hodrick-Prescott Filter in R?
Thanks!
[[alternative HTML version deleted]]
2001 Dec 13
1
Code for Hodrick-Prescott Filter: Special Case of smooth. spline?
I've had a play with this and, due to my own short-comings, remain none the
wiser.
In particular, I'm not sure what value of 'spar' is consistent with the
magic lambda=1/1600 for quarterly data.
I initially interpreted spar as lambda and tried setting spar=1/1600. This
results in almost no smoothing while spar=1600 causes an error. The
smooth.spline function seems to want
2001 Dec 05
1
Code for Hodrick-Prescott Filter
Has anyone written any code for the Hodrick-Prescott filter? I have a some
uncompiled FORTRAN code from Ed Prescott but I'd like to save myself some
programming time if possible. Thanks for your help.
Nick Davis
Crown Financial Policy
Asset and Liability Management Branch
The New Zealand Treasury
Direct: +64-4-471-5924
Fax: +64-4-499-0143
Email:
2002 Jul 08
0
Hodrick-Prescott-Filter as smooth.spline
Could someone, please, write me, how to compute the spar-value for the
smooth.spline-routine to get the same HP-filtered time-series with a
parameter lambda for a function (see mail "Hodrick-Prescott-Filter
example" from ggrothendieck at yifan.net):
hpf <- function(y,lambda{
eye <- diag(length(y))
d <- diff(eye,d=2)
z <- solve(eye+lambda*crossprod(d),y)}
?
Second, is
2009 Apr 04
2
Help using smooth.spline with zoo object
Can someone please show me how to smooth time series data that I have in the form of a zoo object?
I have a monthly economies series and all I really need is to see a less jagged line when I plot it.
If I do something like
s <- smooth.spline(d.zoo$Y, spar = 0.2)
plot(predict(s,index(d.zoo)), xlab = "Year")
# not defined for Date objects
and if I do something like
2011 Mar 04
3
Análisis de una serie temporal diaria
Hola a todos
Estoy tratando de analizaruna serie temporal con datos diarios de
temperaturas (40 años). He creado un objeto zoo (con ayuda de la lista,
gracias) sobre el que encuentro la regresión lineal. He probado también
a crear un objeto ts a partir del zoo. El problema que encuentro es que
nose puede aplicar la función stl para hallar la componente estacional y
la tendencia. Rdice que la