Displaying 20 results from an estimated 900 matches similar to: "removing spatial auto correlation"
2011 Apr 04
1
svd
Dear list,
I searched the libraries but could not find means to compute the
svd of a coupled field. Is it possible in R
Thanks
nuncio
--
Nuncio.M
Research Scientist
National Center for Antarctic and Ocean research
Head land Sada
Vasco da Gamma
Goa-403804
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2010 May 31
1
missing values in autocorelation
Hi all,
I am trying to find the autocorrelation of some time series. I
have say 100 files, some files have only missing values(-99.99, say). I dont
want to exclude these files as they represent some points in a grid. But
when the acf command is issued i get an error.
Error in plot.window(...) : need finite 'ylim' values
In addition: Warning messages:
1: In min(x) : no
2010 Aug 15
2
band pass filter
Hello list,
Is there any way to bandpass filter in R
thanks
nuncio
--
Nuncio.M
Research Scientist
National Center for Antarctic and Ocean research
Head land Sada
Vasco da Gamma
Goa-403804
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2010 Jul 05
2
timeseries
Dear useRs,
I am trying to construct a time series using as.ts function, surprisingly
when I plot
the data the x axis do not show the time in years, however if I use
ts(data), time in years are shown in the
x axis. Why such difference in the results of both the commands
Thanks
nuncio
--
Nuncio.M
Research Scientist
National Center for Antarctic and Ocean research
Head land Sada
Vasco da Gamma
2010 Jun 07
1
prewhiten
HI all.,
I have some univariate time series that need to be prewhitened. HOw this can
be performed in R.
I am thinking of to fit an ARIMA model and substract this from the original
series. Is this the correct way
THanks in advance
nuncio
--
Nuncio.M
Research Scientist
National Center for Antarctic and Ocean research
Head land Sada
Vasco da Gamma
Goa-403804
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2010 Jul 06
1
acf
Hi list,
I have the following code to compute the acf of a time series
acfresid <- acf(residfit), where residfit is the series
when I type acfresid at the prompt the follwoing is displayed
Autocorrelations of series ?residfit?, by lag
0.0000 0.0833 0.1667 0.2500 0.3333 0.4167 0.5000 0.5833 0.6667 0.7500 0.8333
1.000 -0.015 0.010 0.099 0.048 -0.014 -0.039 -0.019 0.040 0.018
2011 Mar 17
1
Extracting columns from a class
Hi list,
I am not a frequent user of R. Recently I used R in principal
component analysis and got the result as a class, which has information like
standard deviation and principal components from 1 to 10. How is it
possible to extract the column corresponding to first principal component
and write it to a file
the out from prcomp command is something like this
Standard
deviations:
2011 Jun 13
1
documentation in R
How we can call auto.arima in R.
Is there any cran package we need to install for this function?
--
Siddharth Arun,
4th Year Undergraduate student
Industrial Engineering and Management,
IIT Kharagpur
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2011 Apr 01
1
principal components
HI all,
I am trying to compute the EOF of a matrix using prcomp but unable to get
the expansion co-efficients.
is it possible using prcomp or are there any other methods
thanks
nuncio
--
Nuncio.M
Research Scientist
National Center for Antarctic and Ocean research
Head land Sada
Vasco da Gamma
Goa-403804
[[alternative HTML version deleted]]
2010 Jul 22
1
tsdiag
HI list,
I want to know whether tsdiag uses k-(p+q) as the lag in ljung box
test. How is it possible to save those values
nuncio
--
Nuncio.M
Research Scientist
National Center for Antarctic and Ocean research
Head land Sada
Vasco da Gamma
Goa-403804
[[alternative HTML version deleted]]
2010 May 20
2
writing autocorrelation and partial auto correlation functions to a file
Dear All,
I am very new to T. I need to fit a ARIMA model to my time
series. So I found the auto correlation functions and partial auto
correlation function in R. Now I want to save these valuse along with the
significance levels to a file. How to do that?. I tried some function in R
like write.table but returns an error "cannot coerce class "acf" into a
2010 Jul 23
1
sink function
I have the following code to write the output from auto.arima function. The
issue is not in finding the model but to divert its out put
fit to a file order_fit.txt. code runs but nothing is written to
order_fit.txt
where am I going wrong
library(forecast)
for (i in 1:2) {
filen = paste("file",i,".txt",sep="")
data <- read.table(filen)
dat1 <- data[,1]
xt <-
2010 Jul 23
0
auto.arima
HI list,
I am using auto.arima from forecast package, I wonder whether its
possible to save model orders to a seperate file
Thanks
nuncio
--
Nuncio.M
Research Scientist
National Center for Antarctic and Ocean research
Head land Sada
Vasco da Gamma
Goa-403804
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2013 Mar 14
3
Working with string
Hello again,
Let say I have following string:
Vec <- c("sada", "asdsa", "sa")
Now I want to make each element of this vector with equal length.
Basically I want following vector:
c("sada ", "asdsa", "sa ")
Therefore we can get:
> nchar(c("sada ", "asdsa", "sa "))
[1] 5 5 5
Is there any
2011 Jul 07
4
Return invisible list
Hi, I'm new to R. I'm trying to do some extreme value theory analysis,
looking at the Mean Excess Plot of a series. These are the commands I type
to get the plot:
x=read.table("data.txt",header=T)
goa=(x[,3])
meplot(goa)
I can see the plot, but I would like to see the values of the x and y axis.
According to this page
2005 Mar 23
3
Fc3 xm boots always maintenance mode
I really wants to know.
When I start "xm create fc3 -c" but always maintenance mode.
Is someone kind enough to point whats wrong with me?
Configfiles are like this.
kernel ="/boot/vmlinuz-2.6.11-1.1177_FC4xenU"
memory =128
name = "fc3"
nics = 1
disk = [''file:/root/fedora.img,hda2,w'']
ip="210.166.211.245"
2017 Mar 26
2
Draft Proposal
Hi,
I have submitted a draft proposal on the GSoC website but I also
wanted to share my draft proposal through Dropbox to get your feedback
quickly through it. Please review it and let me know your feedbacks as soon
as possible. I haven't written much about automated testing as I haven't
written any test yet ( I will learn writing automated tests before April
end ). Link to my
2009 Aug 12
1
inserting into data frame gives "invalid factor level, NAs generated"
I am calculating some values that I am inserting into a data frame. From
what I have read, creating the dataframe ahead of time is more efficient,
since rbind (so far the only solution I have found to appending to a data
frame) is not very fast.
What I am doing is the following:
# create data frame
goframe = data.frame(goA = character(10), goB = character(10), value =
numeric(10))
goframe[1,] =
2006 May 27
7
OT Mexican domains?
Hola!
In case there are some mexican readers here...
It is little difficult for an english speaker to find information
about mexican domains. Is it possible to register a domain like
"fiesta.mx"? I have seen sites selling ".com.mx" and similar but not
just ".mx".
Thanks,
Peter
2006 May 16
2
PLS
hello,
can u please give me the code written in matlab for partial least square
regression
I tried implimenting it but could not succesful,
will you pls provide me the code written in matlab and also the exlanatiion
to each step
Thnaking you.
Mr Jivan shrikrishna Parab
research scholar
Electronics department
Goa university
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