Rolf Turner wrote:
>> What is your point, exactly?
My point is that you are making some very broad generalizations on the basis
of your own (perhaps limited) experience and knowledge of the history of
science. You say:
"My impression --- and I could be wrong --- is that physicists understanding
I have the following script, how can I implement to achieve that calculate
the VIF.
Thanks.
U1.7km<-c(15:24)
R<-c(1.2,0.2,3.6,2.5,4.8,6.3,2.3,4.1,7.2,6.1)
Hm<-c(1:10)
mod<-nls(R~a*(U1.7km^b)*(Hm^c), start=list(a=2.031, b=0.800, c=-0.255),
trace=T)
summary(mod)
coef(mod)
coef(summary(mod))
--
V
R User R User wrote:
Hi all,
I have a presentation problem that I cannot find a solution to in the
documetnation.
I have a nice barplot. Below this I would also like a table with some
information relating to the plot.
My idea was to have the plot and table on the same graphics window so I can
out
Hi,
I am doing kernel density plots, and am trying to make the lines thicker. I
comparing three groups, in sm.density.compare. I tried changing lwd to make
the line sthicker right on the density compare call, but was not able to do
it. There is not an option in sm.options to specify line thickn
May I ask what is the OS? Thanks.
2009/3/5 Erik Iverson :
> I've installed Ubuntu, Emacs, and R on my Samsung NC10 with 2 GB RAM. I
> think the keyboard is very usable on the NC10, and it has about 5-7 hours of
> battery life, which is also nice. R runs just fine on it. I'd consider
> paying ex
Dear all,
Have a complete document about the Batch Execution of R
or nice website?
--
Nash - morri...@ibms.sinica.edu.tw
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-
How can a non-linear regression to calculate the statistical R-square,
R-square adjusted, RMSE, VIF??
Thanks
jose
--
View this message in context:
http://www.nabble.com/Statistics-tp22364717p22364717.html
Sent from the R help mailing list archive at Nabble.com.
Hi: what you want to do is not recommended if you're doing a statistical
computation ( many threads
on this. search the archives if you want more details ) but if you
really want to do that below should work:
mat[is.na(mat)]<-0
On Thu, Mar 5, 2009 at 11:22 PM, Manli Yan wrote:
I have a 50
I have a 50*50 matrix,some entry are NAs,I want to replace these NA by
0,so can I use some syntax to do so other than using ifelse?
I tried to use replace(a,NA,0),it didnt work~~(a is matrix name)
Thanks~
[[alternative HTML version deleted]]
__
Ajay ohri wrote:
Hi List,
This is a slightly non technical ,hence OT topic.
Here is an Interview with Anne Milley of the SAS Institute.
Anne Milley is director of product marketing, SAS Institute . In part 2 of
the interview Anne talks of immigration in technology areas, open source
networks ,
Hi List,
This is a slightly non technical ,hence OT topic.
Here is an Interview with Anne Milley of the SAS Institute.
Anne Milley is director of product marketing, SAS Institute . In part 2 of
the interview Anne talks of immigration in technology areas, open source
networks ,how she misses codi
On Mar 5, 2009, at 10:38 PM, David Winsemius wrote:
See if this gets you further along:
?order
?rev
?"["
> df <- data.frame(x = 1:20, rsamp = sample(1:20,20), Lets
=LETTERS[1:20])
> ord <- order(df$rsamp)
# creates a sorted vector of row numbers
> df[ord,]
x rsamp Lets
16 16 1P
See if this gets you further along:
?order
?rev
?"["
> df <- data.frame(x = 1:20, rsamp = sample(1:20,20), Lets
=LETTERS[1:20])
> ord <- order(df$rsamp)
# creates a sorted vector of row numbers
> df[ord,]
x rsamp Lets
16 16 1P
14 14 2N
18 18 3R
15 15 4O
1
Hi,
I have a data frame and I want to extract the entire rows that have the 20
largest numbers in column Z. How would I go about doing that? Thanks.
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list
https://s
Actually, i had checked out the methods of time series (TS), but i had
thought it cannot solve it. TS may only considers the autocorrelation of Y
in different time, but not Xs. Besides Y, i also have several independent
variables.
Following your suggestion, i browsed the dynlm package and found
Hello again,
Jan Schulz schrieb:
What I couldn't figure out how to put that all together, so that I get a
latex table with standardized regression coefficients and corrected
t-statistics based on H-W sandwich.
Seems that there is a way, I just can't figure out how :-)
It seems to me, that I
On 6/03/2009, at 12:03 PM, SIrEllwood wrote:
Hi all,
3. The probabilities are 0.06, 0.21, 0.24, 0.18, 0.14, 0.10, 0.04,
0.02 and
0.01 that an airline will
receive 0,1,2,3,4,5,6,7 or 8 complaints per day about its luggage.Find
e(x) and e(x^2)
Give the R commands you use and the two numer
On Thu, Mar 5, 2009 at 8:31 AM, kayj wrote:
>
> Hi All,
>
>
> I have about one hundred patients and all the patients had their glucose
> measured on three different days. The days are all the same for all he
> patients. So I have three measurement for each patient . I want to know
> whether the da
Hi all,
3. The probabilities are 0.06, 0.21, 0.24, 0.18, 0.14, 0.10, 0.04, 0.02 and
0.01 that an airline will
receive 0,1,2,3,4,5,6,7 or 8 complaints per day about its luggage.Find
e(x) and e(x^2)
Give the R commands you use and the two numerical values.
Use the sample function to simulate co
Hello,
yes with loading the package: library("Rstem") works! Thank you.
On 3/6/09, Rolf Turner wrote:
>
> On 6/03/2009, at 10:29 AM, Maria I. Tchalakova wrote:
>
>> Hello,
>>
>> thanks a lot for the replies. I've installed the binary for R-2.8.x
>> available at:
>> http://www.statistik.uni-dor
Rolf Turner wrote:
>
> I certainly never said that no statisticians are arrogant; some
> of them may well be. I never met one, but. :-)
this can't be true.
vQ
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PL
We have used function srswor from package Sampling...
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of march
Sent: Friday, 6 March 2009 2:52 AM
To: r-help@r-project.org
Subject:[R] Boostrapping
Hi Everybody,
I
Thanks a lot for your suggestion Uwe!
This is something for me to get my head around!
Best regards
Lena
-Original Message-
From: Uwe Ligges [mailto:lig...@statistik.tu-dortmund.de]
Sent: Thursday, 5 March 2009 10:54 PM
To: Elena Wilson
Cc: r-help@r-project.org
Subject:
On 6/03/2009, at 10:29 AM, Maria I. Tchalakova wrote:
Hello,
thanks a lot for the replies. I've installed the binary for R-2.8.x
available at:
http://www.statistik.uni-dortmund.de/~ligges/Rstem_0.3-1.zip
However, when I try using some of the functions, such as
getStemLanguages() or wordStem()
On 6/03/2009, at 10:38 AM, Mark Difford wrote:
Hi Rolf,
... From the beginner's point of view it is useful to think of
random
variables ...
Who, exactly, is the beginner ?
The OP --- well, not the OP, but the person who introduced this
line of discussion to this thread,
Maria I. Tchalakova wrote:
Hello,
thanks a lot for the replies. I've installed the binary for R-2.8.x
available at:
http://www.statistik.uni-dortmund.de/~ligges/Rstem_0.3-1.zip
However, when I try using some of the functions, such as
getStemLanguages() or wordStem(), I get:
Have you loaded
Hi Pascal,
You need the aes_string function:
V1_P2_plot<-function(df, x, y, z) {
ggplot(df, aes_string(x = x, y= y, fill = z)) +
geom_tile()
}
j<-c("k", "l")
i<-"m"
m<-rnorm(25)
vsim<-cbind(expand.grid(k=1:5, l=1:5*10), m)
V1_P2_plot(df=vsim, x=j[1], y=j[2], z=i)
Hadley
On Thu, Mar 5, 2
Colleagues,
I am apologize in advance if there is a more appropriate R mailing
list for this announcement but this list seems to be the most relevant.
I am a Topical Interest Group (TIG) leader for the Quantitative
Methods: Theory and Design TIG of The American Evaluation Association.
Each ye
richard.cot...@hsl.gov.uk writes:
> The best encoding depends upon which language you would like to manipulate
> the variable in. In R, genders are most naturally represented as factors.
> That means that in an external data source (like a spreadsheet of data),
> you should ideally have the g
Hi Rolf,
>> ... From the beginner's point of view it is useful to think of random
>> variables ...
Who, exactly, is the beginner ? And was not Sir R. A. Fisher pretty arrogant
and fractious ? He also was highly dismissive of Sir Richard Doll's
conclusion that smoking caused cancer (himself bei
I get the same error message when I do this:
> read.table('NA',header=TRUE,stringsAsFactors=FALSE)
Error in file(file, "r") : unable to open connection
In addition: Warning message:
In file(file, "r") :
cannot open file 'NA', reason 'No such file or directory'
I get this error when I call list.
Dear R people,
it is a pleasure to try and use functionnalities that are in ggplot,
even with my poor capacities in R. so far, i'dlike to be able to use
these in my own function, and to
"be able to use it repeatedly from
vectors where I store the names of my columns."
I have understood that this
Hello,
thanks a lot for the replies. I've installed the binary for R-2.8.x
available at:
http://www.statistik.uni-dortmund.de/~ligges/Rstem_0.3-1.zip
However, when I try using some of the functions, such as
getStemLanguages() or wordStem(), I get:
> getStemLanguages()
Error: could not find funct
Hi Marc,
There is in fact an even shorter route: ?fix
Regards, Mark.
Rolf Turner-3 wrote:
>
>
> On 5/03/2009, at 10:00 PM, Marc Vinyes wrote:
>
>> It is quite exagerated that I have to build R in order to modify an
>> R file
>> without messing with dlls, and I think it would be interestin
On Thu, 5 Mar 2009, ling ling wrote:
Dear all,
I am a newcomer to R programming, I met the problem:
I have a lot of .txt files in my directory.
Firstly, I check whether the file satisfies the conditions:
1.empty
2.the "Rep" column of the file has no "useractivity_idle" or
"useractivity_act"
kapo coulibaly wrote:
> I have data on a regular grid in the format: x y z data. I would like to
> be able to plot them in 3d kind of like a volume or a mesh with colors. Is
> that possible in R and how?
>
I've posted code for a 4-D plot here:
http://addictedtor.free.fr/graphiques/RGraphGall
From: Michael A. Miller
Subject: Re: [R] R on netbooks et al?
>
> > "Jim" == Jim Lemon writes:
>
> > I've got R on my little EeePC as well. Great for most jobs
> > and I highly recommend a DC/DC convertor for plugging into
> > your car's cigarette lighter to get around the crap
On 5/03/2009, at 8:48 PM, Wacek Kusnierczyk wrote:
Rolf Turner wrote:
Sports scores are random variables. You don't know a priori what the
scores are
going to be, do you? (Well, if you do, you must be able to make a
*lot* of money
betting on games!) After the game is over they aren't rando
Leandro Marino wrote:
I use it on an ASUS EEE 701 PC! It works with some limitation,
because this model have only 512mb of RAM. But it is working fine.
The OS is Windows XP.
Ditto, except that I put Ubuntu Eee on my 701. (Since renamed "Easy
Peasy" http://www.geteasypeasy.com/)
A nice t
I don't understand the last message either: the build environment has
problems.
a) There seem to be no Windows binaries on Omegahat for R > 2.7.
b) A few are available from CRAN extras (one of the default
repositories on Window), and I've added Rstem. So please try again
now.
On Thu, 5 Mar
Hello Petr,
Thank you. That works beautifully. I searched for a way to transpose
a data frame, but you are right: barplot() wants a matrix.
Andrew
On Wed, Mar 4, 2009 at 1:49 AM, Petr PIKAL wrote:
> Read what barplot does and look to your plot.
>
> If you want each row to be plotted as stack
On 5/03/2009, at 10:00 PM, Marc Vinyes wrote:
It is quite exagerated that I have to build R in order to modify an
R file
without messing with dlls, and I think it would be interesting to
make this
process easier, but for now I'm happy to be productive again.
There is probably (almost sure
I have a 3 dimensional plot using filled.contour. Normally the function
provides a grid or wire plot with lines referencing the y and x axis values.
Is there a way to use only one direction, say the y or x only? I'm not sure
this helps, but it would be similar to plotting data in a 2 dimensi
On Thu, Mar 5, 2009 at 1:27 PM, Duncan Temple Lang
wrote:
>
>
> Patrick Meyer wrote:
>>
>> Here's the solution I'm using now, but it is not very "clean":
>>
>> png("out.png")
>> plot(c(1,2,3))
>> dev.off()
>>
>> system("base64 -w0 out.png > out.base64")
>> b64txt <- readLines(file("out.base64","rt
Hello All,
I went through lot of searching for papers to do clustering on
Co-Authroship.I ran SNA metrics on my Undirected
Graph(betweenness,Closeness,Eigen Vector) using R.
After running the sna Metrics I found important nodes and did clustering on
those nodes based on Binding strength .This c
Have you tried the binary for R-2.7.x available from
http://www.omegahat.org/R/bin/windows/contrib/2.7/Rstem_0.3-1.zip
which might or might not work for recent versions of R.
Have you asked the Omegahat maintainer for an update of the (obviously
quite outdated) Windows repositories? CCing now.
2009/3/5 ling ling :
>
> Dear all,
>
> I am a newcomer to R programming, I met the problem:
>
> I have a lot of .txt files in my directory.
>
> Firstly, I check whether the file satisfies the conditions:
> 1.empty
> 2.the "Rep" column of the file has no "useractivity_idle" or
> "useractivity_act"
>
The problem is that tsdiag is a generic (the same in both packages),
and package TSA sets methods for it (and methods for classes in
package stats which has already registered methods).
stats:::tsdiag.Arima(model1)
ought to work (it does for me in your example), but please take with
up with
Dear all,
I am a newcomer to R programming, I met the problem:
I have a lot of .txt files in my directory.
Firstly, I check whether the file satisfies the conditions:
1.empty
2.the "Rep" column of the file has no "useractivity_idle" or
"useractivity_act"
3.even The "rep" has both of them, numb
Hello,
I am trying to install the Rstem package, but I have problems. I am
using Windows XP and the 2.8.1 version of R. I have read the "Add-on
packages" chapter of the "R Installation and Administration" manual,
and also have tried several things, which worked for other people on
the mailing list
Patrick Meyer wrote:
Here's the solution I'm using now, but it is not very "clean":
png("out.png")
plot(c(1,2,3))
dev.off()
system("base64 -w0 out.png > out.base64")
b64txt <- readLines(file("out.base64","rt"))
It would be nice to have an internal solution, even if this exactly does
what I w
Carlos Morales wrote:
> Hello,
>
> I still have the same error which I have written in the Subject field, I
> leave here the code and I hope you can help me with this:
>
[removed]
the lengthy code example does not make it easier to help you, in particular
without the
data you used. All the com
I'm having similar experiences on my Acer Aspire One. Everything will
work good. Only thing that takes a lot of time is compiling R if you are
in the habit of doing so.
herrdittm...@yahoo.co.uk wrote:
> Dear useRs,
>
> With the rise of netbooks and 'lifestyle laptops" I am tempted to get one of
Hi Uwe,
You are correct - that was a type O (52) and thanks for you your suggestion
that works..
Pele wrote:
>
>
>
> Hi R users,
>
> I have a factor variable called date as shown below: Can anyone share the
> best / most efficient way to extract year and week (e.g. year = 2006,
> week = 52
You could send a message to Twitter, see:
http://finzi.psych.upenn.edu/R/Rhelp08/2009-February/187822.html
Regards
Markus
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Charles C. Berry
Sent: 05 March 2009 17:03
To: nhawrylyshyn
> "Rolf" == Rolf Turner writes:
> My impression --- and I could be wrong --- is that
> physicists understanding of randomness is very narrow and
> constrained. They tend to think along the lines of chaotic
> dynamical systems (although perhaps not consciously; and
> they
Have you tried using the pos argument in the library function to load the TSA
package after the stats package?
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
> -Original Message-
> From: r-help-boun...@r-project.org [ma
Hi,
There are possibly several ways to do this. My approach would be:
dates <- strptime(as.character(DATE), "%d%b%Y")
year <- dates$year + 1900
week <- floor(dates$yday/365 * 52)
HTH,
--sundar
On Thu, Mar 5, 2009 at 8:58 AM, Pele wrote:
>
> Hi R users,
>
> I have a factor variable called date
I think that the dynlm package was designed for just such a problem. I also
would not be surprised if there are tools in the zoo package to do this. You
should probably check out the time series task view on CRAN as well.
Hope this helps,
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Cent
Pele wrote:
Hi R users,
I have a factor variable called date as shown below: Can anyone share the
best / most efficient way to extract year and week (e.g. year = 2006, week
= 52 for first record, etc..)? My data set has 1 million records.
DATE
11DEC2006
11SEP2006
01APR2007
02DEC2
See the run.cor.examp function in the TeachingDemos package (in addition to the
mvrnorm function in MASS).
Hope this helps,
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
> -Original Message-
> From: r-help-boun...@r-p
This seems to work fine without the na.strings. Can you include the
data that you were reading:
> x <- read.table(textConnection("1,2,3,4
+ 5,,6,NA
+ ,7,NA,8
+ ,,NA,9"), sep=',')
> closeAllConnections()
> x
V1 V2 V3 V4
1 1 2 3 4
2 5 NA 6 NA
3 NA 7 NA 8
4 NA NA NA 9
On Thu, Mar 5, 200
Also see the addtable2plot in the plotrix package.
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
> project.org] On Behalf Of R User R U
Dear Sirs,
I want to estimate the survival mean of a few specific teams. I'm trying to
calculate it through a Kaplan Meier estimator. For doing so, I load the
"survival" package and run the following instructions:
"options(survfit.print.mean=TRUE)" allows showing the mea
Dear John,
If you tell me what you want to happen, I'll consider it when I next make
substantial revisions to the package in the summer. I'm still sceptical about
using the Rcmdr as a programming editor; among other things, it doesn't provide
a true R console.
Regards,
John
> -Original M
Dear Kevin,
If you do the same regression as in the text then you'll get the same
hat-values; the regression is the one on the top of p. 244:
> mod <- lm(repwt ~ weight*sex, data=Davis)
> max(hatvalues(mod))
[1] 0.7141856
As to making sense of the computations:
> X <- model.matrix(mod)
> head(X
Dear all,
I am a newcomer to R programming, I met the problem:
I have a lot of .txt files in my directory.
Firstly, I check whether the file satisfies the conditions:
1.empty
2.the "Rep" column of the file has no "useractivity_idle" or
"useractivity_act"
3.even The "rep" has both of them, numb
In addition to the other responses that you have received, you can use the
grconvertX and grconvertY functions to convert between the different coordinate
systems, the upper left corner will be 0,1 in ndc (whole device/page), nfc
(figure region), npc (plot region), or nic (inside the outer margi
Hi R users,
I have a factor variable called date as shown below: Can anyone share the
best / most efficient way to extract year and week (e.g. year = 2006, week
= 52 for first record, etc..)? My data set has 1 million records.
DATE
11DEC2006
11SEP2006
01APR2007
02DEC2007
Thanks in
On Thu, 5 Mar 2009, nhawrylyshyn wrote:
Hi,
Not sure if this is the best section to post it in. I'm doing lengthy runs
on a 30GB data set - I would like to know if it is possible through any
means for R to send an email / text message or anything when it has finished
running a source file.
An
The "tsdiag" function in the TSA package overrides the "tsdiag" function in
the "stats" package. There are a few annoying bugs in the TSA's version of
the function so I would like to use the "stats" function but still have
access to other TSA functions. I have tried using stats::tsdiag( ) but as
Fuchs Ira wrote:
> Can someone please tell me why the following (last line) doesn't work
> (as I expect it to :-)
>
> library(quantmod)
> a = getSymbols("MSFT",from="2009-3-01")
> a
> MSFT
> eval(as.name(a))
> MSFT$MSFT.Adjusted
> b=paste(a,'$MSFT.Adjusted',sep='')
> b
> eval(as.name(b))
>
> Why do
Prof Brian Ripley wrote:
If instead, I use dev.copy2eps() after getting output to the screen,
the point labels do not appear in the resulting .eps graph. Why? Is
there a workaround?
I don't think that is true:
plot(1:10)
identify(1:10)
## Click near points 6 and 7
dev.copy2eps("test.eps")
a
I thought that's what I had:
> b
[1] "MSFT$MSFT.Adjusted"
> eval(as.name(b))
Error in eval(expr, envir, enclos) :
object "MSFT$MSFT.Adjusted" not found
However, Patrick's suggestion of eliminating the '$' gave me what I
was looking for:
> b=paste(a,'.Adjusted',sep='')
> eval(as.name(a))[,b
On Mar 5, 2009, at 10:08 AM, Kourosh Ks wrote:
dears,
I like two write a program with R to estimate the coefficients of
covariate,I like two know the original program for this programing
for partial maximum likelihood for cox models with two co variate.
I did it with coxph command,
>
I am struiggling a bit with this function 'hatvalues'. I would like a little
more undrestanding than taking the black-box and using the values. I looked at
the Fortran source and it is quite opaque to me. So I am asking for some help
in understanding the theory. First, I take the simplest case
Dear Peter,
I've resisted trying to make the script window a full-fledged editor but it's
been moving in that direction (right-click context menu, line wrapping, etc). I
don't think that the Ctext widget is currently provided via the tcltk package.
I still think that people who want a real prog
Hi Everybody,
I am trying to use the no parametric boostrapping methos to validate a
logistic regression model.
My idea is to randomly select the observations of a dataset and estimating
the coefficients of the model
for each random selection.
Do you have any idea about that?
Please, Let me k
Hi,
Not sure if this is the best section to post it in. I'm doing lengthy runs
on a 30GB data set - I would like to know if it is possible through any
means for R to send an email / text message or anything when it has finished
running a source file.
Any suggestions would be appreciated.
Nick.
Peter,
I see that you do not think Rcmdr should be used to as a program editor
for R code. I understand that modifying Rmcdr to make it an editor would
be an enormous undertaking, nevertheless, having a program editor that
works with Rcmdr would be a wonderful addition to what is already an
outstan
I have a file where the missings are coded as NA or blank. how can I tell R
to read the data set and to consider the missings NA or a blank.
I tried the following
data<-read.table("data.txt", sep='\t', header=T, na.strings=c("NA",""))
is it correct? I am new to R and I am not sure if R is con
Hi,
I have been using this website (
http://www.stat.pitt.edu/stoffer/tsa2/Rissues.htm
http://www.stat.pitt.edu/stoffer/tsa2/Rissues.htm ) to help me to fit ARIMA
models to my data. At the moment I have two possible methods to use.
Method 1
If I use
arima(ts.data, order=c(1,2,0), xreg=1:length(
This is to announce that we plan to release R version 2.8.0 on Friday,
April 17, 2009.
Release procedures start Tuesday March 17. The detailed schedule can
be found on http://developer.r-project.org
The source tarballs will be made available daily (barring build
troubles) and the tarballs can be
Hi All,
I have about one hundred patients and all the patients had their glucose
measured on three different days. The days are all the same for all he
patients. So I have three measurement for each patient . I want to know
whether the day when the glucose was measured has an effect on the
measu
>can anyone tell me why an encoding of 1/2 for a dummy variable for
>two groups (e.g. gender) seems to be preferred over 0/1?
>It's been bugging me for a while, 0/1 seems more natural, but I have
>been told (without explanation) that 1/2 is better. Why?
The best encoding depends up
> "Jim" == Jim Lemon writes:
> I've got R on my little EeePC as well. Great for most jobs
> and I highly recommend a DC/DC convertor for plugging into
> your car's cigarette lighter to get around the crap battery
> problem.
I run R on my Eee PC as well - no problems there. A
Does the first item on page 52 of 'The R Inferno'
explain it for you? If not, can you give some
hints about how to improve the explanation?
Patrick Burns
patr...@burns-stat.com
+44 (0)20 8525 0696
http://www.burns-stat.com
(home of "The R Inferno" and "A Guide for the Unwilling S User")
Fuchs
Dear all,
Does R have function or method to finish the following task.
Say i have a dataset. The response variable is Y, and the indepedent
variables are X1, X2, X3, and YEAR. See an example.
Y X1X2X3 X4YEAR
13.4 2.8 3.5
William Dunlap wrote:
>The help page for ?"for" says that:
>
>The index seq in a for loop is evaluated at the start of the loop;
> changing
>it subsequently does not affect the loop. The variable var has the
> same type
>as seq, and is read-only: assigning to it does not alter seq.
Hello,
You have a link on the subject here:
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1122844
The author has extra literature and code on the subject.
Also, there was a thread in R-SIG-Finance list on the subject a few
months ago.
Best regards,
Carlos J. Gil Bellosta
http://www.data
Hi,
I have been using this website (
http://www.stat.pitt.edu/stoffer/tsa2/Rissues.htm
http://www.stat.pitt.edu/stoffer/tsa2/Rissues.htm ) to help me to fit ARIMA
models to my data. At the moment I have two possible methods to use.
Method 1
If I use
arima(ts.data, order=c(1,2,0), xreg=1:length(t
b is character string:
as.name(b)
`MSFT$MSFT.Adjusted`
Note the backticks: that is a valid (if non-syntatatic) name, but you
don't have an object of that name.
On Thu, 5 Mar 2009, Fuchs Ira wrote:
Can someone please tell me why the following (last line) doesn't work (as I
expect it to :-)
schmway and morgan time series analysis with R examples is a good
intro to fourier analysis. Also there are probably references in the
help for
?fft
Stephen
On Thu, Mar 5, 2009 at 5:48 AM, Maithili Shiva wrote:
>
> Dear R Helpers,
>
> Is there any literaure available (including R code) on Fast
Can someone please tell me why the following (last line) doesn't work
(as I expect it to :-)
library(quantmod)
a = getSymbols("MSFT",from="2009-3-01")
a
MSFT
eval(as.name(a))
MSFT$MSFT.Adjusted
b=paste(a,'$MSFT.Adjusted',sep='')
b
eval(as.name(b))
Why does this last line not work the way the e
dears,
I like two write a program with R to estimate the coefficients of covariate,I
like two know the original program for this programing for partial maximum
likelihood for cox models with two co variate.
I did it with coxph command,
thanks
[[alternative HTML version deleted
From the help page:
"Details
identify is a generic function, and only the default method is
described here.
identify is only supported on screen devices such as X11, windows and
quartz. On other devices the call will do nothing."
Why not collect the specifics of the identified points and t
Hi,
can anyone tell me why an encoding of 1/2 for a dummy variable for
two groups (e.g. gender) seems to be preferred over 0/1?
It's been bugging me for a while, 0/1 seems more natural, but I have
been told (without explanation) that 1/2 is better. Why?
--
aleblanc
__
"Stephen J. Barr" writes:
> I have two time series (ts) objects, 1 is yearly (population) and the
> other is quarterly (bankruptcy statistics). I would like to produce a
> quarterly time series object that consists of bankruptcy/population.
> Is there a pre-built function to intelligently divide t
I use it on an ASUS EEE 701 PC! It works with some limitation, because this
model have only 512mb of RAM. But it is working fine. The OS is Windows XP.
I think that the better netbooks is one from HP, this netbook have an normal
keyboard.
Atenciosamente,
Leandro Lins Marino
Centro de Avaliação
Hello Petr,
In fact spec is data.frame with a column called code (containing numerical
values) and some other columns called data1, data2, ... containing data for
each equipment (that is for each code).
But I don't have the data for all my devices. It means that some 'code' are
not in spec$Code.
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