Rolf Turner wrote:
...
It always gets fussy and fiddly whenever legal issues arise. It would
be nice if there
were no such thing as ``intellectual property'' (which has always
seemed to me to be
an oymoron) and no such thing as lawyers.
Hey, some of my best friends are lawyers. And who wants
The two documents were actually different, which I didn't notice
yesterday. One had different encoding. Thanks for your help Duncan.
Unfortunetly the other problem still exists. My R or Sweave seems not to
be able to work with utf-8 encoding. Everything works fine with
latin-1, though. I coul
On Thu, 2009-01-22 at 14:58 -0800, Jason Rupert wrote:
> I recently received a Sigmaplot file (*.jnb)from a customer and would like to
> know if I can input it to a data frame and then manipulate the data in R.
>
> I did a search on Google and on RSeek (www.rseek.org), but did not get any
> goo
Hi Felipe,
As I recall that is a known bug in the current version of ggplot2.
Cheers,
Thierry
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, met
Andreas Klein schrieb:
> Hello.
>
>
> Does anyone know, if there is a function in R to compute the vector
> autocorrelations?
>
>
?ccf on bivariate time series.
+ have a look at the vars package though I am not sure what exactly you
are trying.
hth
Stefan
'The R Inferno' page 87 talks about getting
extra columns from data derived from spreadsheets.
It happens because the spreadsheet program
thinks for some reason that the extra cells are
used -- a cell was probably clicked on.
Patrick Burns
patr...@burns-stat.com
+44 (0)20 8525 0696
http://www.bur
Odette Gaston wrote:
Hi Uwe and all,
Error message was:
error in normalizePath(path) :
path[1]: no such file to load
Hmmm, what does traceback() tell you at that point?
Have you had a cionnection to CRAN and has something been downloaded?
If so, to which directory?
Where is R installed?
Do
If I understand properly, you want '<-' to be
a generic function, which it currently isn't.
There may be a way to fake that (I can't think
of any).
But I'm wondering if you should rethink what
you want. The only reason that I can think of
that you would want to change '<-' is because
of some ext
I think I solved the problem =)
My dataset is an .arff file. So I read my data into R via read.arff.
I tried the following:
Export the dataframe to an txt-file and import it once again in R via
read.table.
With the new dataset if works fine. Maybe the error comes from the
variable-names. I attach
Rolf Turner-3 wrote:
>
>
> Is this really a violation of copyright? If I have a copy of a
> journal I believe
> it is within the compass of ``fair practice'' (or some such jargon)
> to make a photocopy
> of a particular article and give this copy to a colleague or student
> for research
Hi R-Community:
Here is what I want to do:
Every time I start R I want R to:
1. remove(list=ls()), and
2. "source" another file automatically.
Then, when I shutdown R, I want R to:
1. remove(list=ls())
How do I do this?
I recall vaguely that S could do this, but I don't remember exa
I want to get the relative frequency of cases in a data frame that
matches a specified criteria, omiting NA values. This seem so simple,
but I can't come up with an effective way.
nrow(data[data$variable>value & !is.na(data$variable),])/nrow(data)
works but is very ineffective and CPU consuming w
Dear Felipe,
Provide a dummy sample if your dataset is big or confidential. The
actual values are not that important to figure out what kind of plot you
want.
How did you code Week? Numeric? Try convert it into a factor with levels
= c(27:52, 1:26). And then set the breaks to seq(1, 52, by = 2).
Dear Vikas,
First a few remarks:
- as we don't have your dataset, your example is not reproducible.
Please do add a (dummy) dataset next time.
- adding spaces makes code much more readable.
- why do you use scale_colour_gradient2 if you set the midpoint at the
lower level? Use scale_colour_gradien
Philip Smith wrote:
Hi R-Community:
Here is what I want to do:
Every time I start R I want R to:
1. remove(list=ls()), and
You do not need to given you start with an emty workspace, i.e. start R
with:
R --no-restore
2. "source" another file automatically.
Write it in your RProf
in this case you just need:
mean(data$variable > value & !is.na(data$variable))
I hope it helps.
Best,
Dimitris
Stefan Björk wrote:
I want to get the relative frequency of cases in a data frame that
matches a specified criteria, omiting NA values. This seem so simple,
but I can't come up wi
Geert,
Can you get a simpler model with, say, a quadratic dependence on lon, lat to
converge, using glmmPQL? The answer might give a clue about whether the issue
is related to using a smoother, or is something more basic.
How confident are you that the Poisson assumption is reasonable?
Can th
Wacek Kusnierczyk wrote:
Duncan Murdoch wrote:
You can use parent.frame() as the pos or envir argument to assign(),
and then the assignment happens in the caller's frame. And assign()
is also another way out if you overwrite <- with something that
doesn't work; just call it to reassign base
Gerrit Voigt wrote:
The two documents were actually different, which I didn't notice
yesterday. One had different encoding. Thanks for your help Duncan.
Unfortunetly the other problem still exists. My R or Sweave seems not to
be able to work with utf-8 encoding. Everything works fine with
la
Dear community,
unfortunately I did not manage load the rJava package receiving the following
error-message:
> library("rJava")
Error in inDL(x, as.logical(local), as.logical(now), ...) :
kann shared library 'C:/Programme/R/2.8.1/library/rJava/libs/rJava.dll' nicht
laden:
LoadLibrary failure:
Hi.
I need to apply run a regression analysis for groups of data of fixed
length:100 As, 100 Bs, 100 Cs etc.
eg
x
Key Value
A 1
A 21.2
A 4
A 6.5
...repeat 96 times with differing values of A
B 1
B 2.3
B NA
B 6.5
...repeat 96 times with differi
Hi all,
I've noticed that many computational neuroscience research groups use
MATLAB. While it's possible that MATLAB may have some features
unavailable in R, I suspect that this may instead simply be a case of
costly tradition, where researchers were taught MATLAB as students and
pay for it as re
> I read data from *.xls file and i did some caliculations on that data and
> now i have to create a column in the same .xls file
> i tried it with *write.xls() *but the thing is it deleted all the columns
> previously presented in that file and it created a column and inserted data
> can any one
Thank you Greg for your explanations. I think you explained the problem
clearly now.
Mvh.
Marie
On Thu, Jan 22, 2009 at 10:24 PM, Greg Snow wrote:
> Comments interspersed below
>
> From: Marie Sivertsen [mailto:mariesiv...@gmail.com]
> Sent: Thursday, January 22, 2009 1:17 PM
> To: Greg Snow
Most likely Java is not in place, including in the DLL search path.
On Fri, 23 Jan 2009, drflxms wrote:
Dear community,
unfortunately I did not manage load the rJava package receiving the following
error-message:
library("rJava")
Error in inDL(x, as.logical(local), as.logical(now), ...) :
See ?na.exclude
On Fri, 23 Jan 2009, Neil Beddoe wrote:
Hi.
I need to apply run a regression analysis for groups of data of fixed
length:100 As, 100 Bs, 100 Cs etc.
eg
x
Key Value
A 1
A 21.2
A 4
A 6.5
...repeat 96 times with differing values of A
B 1
B
Hi all,
I want to modify a large number of text files (ca 4000) by replacing a
value found on a particular line in them with a value from an R object.
For a single file I would normally use:
con<-file ("foo.txt", open="r+")
content<-readLines(con)
> Note there is a link to issues dealing with teaching material, and I'd
> imagine colleagues at your institution are likely to have the same access
> rights, so technically its just as easy to send them a link to download a
> paper themselves.
Hello,
On this point, I remember taking courses at u
You can probably use one of the 'apply' functions, but it is hard to
tell you which one since you did not provide commented, minimal,
self-contained, reproducible code, or an example of what you thought
the output should look like.
On Fri, Jan 23, 2009 at 2:28 AM, venkata kirankumar
wrote:
> Hi a
The solution you have seems to read in all the lines of data at once,
operate on them and then write them out as a whole chunck. Having
multiple connections open won't really help since I/O is serial. So
is the code you included the actual code, or just an example? It
would help to see what the
Dear R-helpers:
I, an entry level R user, wonder how make a 3d scatter plot with both error
bars and a flexibly fitted surface.
Can anyone eligthen me?
Many Thanks in advance.
-Sean
[[alternative HTML version deleted]]
__
R-help@r-project
Apologies for re-posting. I mistakenly sent embedded text in my initial post.
Sorry, I'm new at this.
Best,
- J. Dixon
Dear R-users,
Has anyone written a function for multifractal detrended
fluctuation analysis? The "fractal" package does mono-fractal DFA,
but not multifractal as fa
On Wed, Jan 21, 2009 at 4:45 PM, wrote:
> de Jong, S. (1993) SIMPLS: an alternative approach to partial least squares
> regression. Chemometrics and Intelligent Laboratory Systems, 18, 251–263
Learn to use interlibrary loan:
http://www.lib.iastate.edu/services1/ill_info.html
Hadley
--
http:/
On 1/23/2009 7:38 AM, drflxms wrote:
Dear community,
unfortunately I did not manage load the rJava package receiving the following
error-message:
library("rJava")
Error in inDL(x, as.logical(local), as.logical(now), ...) :
kann shared library 'C:/Programme/R/2.8.1/library/rJava/libs/rJava.dl
Hello everybody!
I have an ARIMA model for a time series. This model was obtained through an
auto.arima function. The resulting model is a ARIMA(2,1,4)(2,0,1)[12] with
drift (my time series has monthly data). Then I perform a 12-step ahead
forecast to the cited model... so far so good... but when
> As I recall that is a known bug in the current version of ggplot2.
That's right - because of an underlying bug in R which will be fixed
in the next release of R and worked around in the next release of
ggplot2.
Hadley
--
http://had.co.nz/
__
R-hel
I have two collections of dates and I want to figure out what dates they have
in common. This is not giving me what I want (I don't know what it is giving
me). What is the best way to do this?
Tom
> data1
[1] "1948-02-24 EST" "1949-04-12 EST" "1950-05-29 EDT" "1951-05-21 EDT"
[5] "1951-12-20 E
you want:
ans <- intersect(data1,data2)
class(ans) <- c("POSIXt","POSIXct")
I personally think intersect should preserve the class of the object
(if both args have the same class), but I think r-core has a different
opinion.
-Whit
On Fri, Jan 23, 2009 at 9:02 AM, Tom La Bone wrote:
>
> I have
See last line on every message to r-help and note the reproducible part.
One problem may be that your auto.arima call has no xreg yet your prediction
has newxreg.
On Fri, Jan 23, 2009 at 8:48 AM, diego Diego wrote:
> Hello everybody!
> I have an ARIMA model for a time series. This model was obtai
Yes, it's called Ocular Econometrics. You plot both series on the same chart
and use your onboard pattern detector. If you can't see it on the plot, it's
unlikely that any correlations you find in other ways will have much
predictive power, and that's the only kind of relationship that counts.
I
Dear Mr. Murdoch, Dear Mr. Ripley, Dear Mr. Wang,
thank you very much for your quick and efficient help! It is exactly as
Duncan explained it: Including jvm.dll in PATH solved the problem
immediately. Everything works fine now.
The only thing is, that I do not understand why I had to do this
manu
Dear all,
I have to open and read several netCDF (.nc) files. I installed the
ncdf package and everything works fine.
The problem is that I also have several netCDF files that are also
ziped. These files are in the form,:
nc_file.gz
I tried different ways (within R) to unzip and read them, but
Duncan Murdoch wrote:
> Wacek Kusnierczyk wrote:
>> Duncan Murdoch wrote:
>>
>>> You can use parent.frame() as the pos or envir argument to assign(),
>>> and then the assignment happens in the caller's frame. And assign()
>>> is also another way out if you overwrite <- with something that
>>> d
Hi - wouldn't it be possible to bootstrap the difference between the fit of
the 2 models? For example, if one had a *linear* regression problem, the
following script could be used (although I'm sure that it could be
improved):
library(MASS); library(boot)
#create intercorrelated data
Sigma <- ma
> Hi,
Hi Radu,
>
> I'm trying to use metaMDS with a dissimilarity matrix
> of angles, not
> Bray-Curtis, and I wanted to know if there is an in-built
> function to
> produce a plot of stress values against dimensions, that
> could be used to
> determine the 'true' dimension of the solution.
I
On 1/23/2009 9:44 AM, drflxms wrote:
Dear Mr. Murdoch, Dear Mr. Ripley, Dear Mr. Wang,
thank you very much for your quick and efficient help! It is exactly as
Duncan explained it: Including jvm.dll in PATH solved the problem
immediately. Everything works fine now.
The only thing is, that I do n
Hi All,
We have all had to face skeptical colleagues asking if software made by
volunteers could match the quality and accuracy of commercially written
software. Thanks to the prompting of a recent R-help thread, I read, "R:
Regulatory Compliance and Validation Issues, A Guidance Document for t
I am trying to construct a two-way table where, instead of printing the
two-way frequencies in the table, I would like to print the values of a
third variable that correspond to the frequencies.
For example, the following is easily constructed in R
> fact1 <- factor(sample(LETTERS[1:3],10,r
The problem is in the intersect function that does x = as.vector(x) and
therefore transforms date vector into a numeric .
Try to:
d1 = as.character(data1) ; d2 = as.character(data2)
d = intersect(d1, d2)
data = as.Date(d)
A.
Tom La Bone wrote:
I have two collections of dates and I want to fig
Dear useRs and developeRs,
In my diploma thesis I work with a daily time series of glacier runoff
data.
I did already aggregate them to monthly means etc.
Now i want to use just the summer values (I am indecisive by now what
that means, but let's make it easy and use months like June).
Is there a
I have grouped data in this format
Size -- Count
0-10 -- 15
10-20 -- 25
20-50 -- 10
50-100 -- 5
I've been trying to find a way to set this up with the proper histogram
heights, but can't seem to figure it out. So any help would be much
appreciated!
--
View this message in context:
http://www
Hello,
I was wondering if someone could tell me how to output, to file, the residuals
from a REML model-fit. The type of residuals I am interested in are the simple
"original raw values - model fit" type.
Thanks in advance,
Josh B.
[[alternative HTML version deleted]]
Thanks Thierry:
The use of levels is what I needed, thanks for your help.
From: ONKELINX, Thierry
Subject: RE: [R] ggplot seq
To: mazatlanmex...@yahoo.com, r-h...@stat.math.ethz.ch
Date: Friday, January 23, 2009, 3:01 AM
Dear Felipe,
Provide a dummy sample if your dataset is big or
If I understood propelly
> tapply(fact3, list(fact1, fact2) , paste, collapse = ",")
A.
Derek Ogle wrote:
I am trying to construct a two-way table where, instead of printing the
two-way frequencies in the table, I would like to print the values of a
third variable that correspond to the freque
Le ven. 23 janv. à 08:55, darthgervais a écrit :
I have grouped data in this format
Size -- Count
0-10 -- 15
10-20 -- 25
20-50 -- 10
50-100 -- 5
I've been trying to find a way to set this up with the proper
histogram
heights, but can't seem to figure it out. So any help would be much
app
Hi,
Try this:
x<-c(15,25,10,5)
names(x)<-c('0-10','10-20','20-50','50-100')
barplot(x,space=0,xlab='Size',ylab='Count',col=1:4)
See ?barplot for more information.
HTH,
Jorge
On Fri, Jan 23, 2009 at 8:55 AM, darthgervais wrote:
>
> I have grouped data in this format
>
> Size -- Count
> 0-1
Check the package 'foreign'. It can read data from SPSS,Minitab,SAS,Systat
(sigmaplot is part of Systat) etc. I also use Sigmaplot and an easy workaround
is to convert the sigmaplot file to csv or xls file and then read it into R.
Felipe D. Carrillo
Supervisory Fishery Biologist
Department o
I tried that I'm afraid. I still get values for groups with missing data. I
think na.exclude just ignores the NAs but I want it to return NA. Where one of
the values is NA.
-Original Message-
From: Prof Brian Ripley [mailto:rip...@stats.ox.ac.uk]
Sent: 23 January 2009 13:04
To: Neil
Yes, that was exactly what I was looking for. Very concise. Thank you.
My "real" example has many more items in each cell. I will now have to
figure out how to put a "carriage return" after, say, every fourth item.
Nevertheless, thank you very much for the quick and accurate answer.
-Orig
Sean Zhang gmail.com> writes:
> I, an entry level R user, wonder how make a 3d scatter plot with both error
> bars and a flexibly fitted surface.
For regular grid data, I found interp.loess in package tpg easiest to use to
compute the fine grid required for the plot.
For irregular data, check
Please read the last line to every post on r-help particularly
noting the reproducible part.
Assuming you have a series such as z below and want
June, July and August of each year:
> library(zoo)
> set.seed(1)
> z <- zoo(rnorm(25), as.yearmon("2000-01") + 0:24/12)
> z[format(time(z), "%m") %in% c
I installed the newest version of R and once again ran into problem
with Tinn-R failing when trying to use the R explorer. I had this
problem once before and solved it when I added the following
.trPaths = c(
'C:/Documents and Settings/fbuchins/Application Data/Tinn-R/tmp/',
'C:/Documents and Sett
The only apparent reason for the failure is that the elegant line
using Sys.getenv denerates filenames with double backslashes instead
of forward slashes. I am working in Windows XP and I thought that R
could use double backslashes or a single forward slash.
So what am I not understanding about th
On 1/23/2009 11:10 AM, Farrel Buchinsky wrote:
I installed the newest version of R and once again ran into problem
with Tinn-R failing when trying to use the R explorer. I had this
problem once before and solved it when I added the following
.trPaths = c(
'C:/Documents and Settings/fbuchins/Appl
Hans-Joerg Bibiko's function Levenshtein would help; cf. below for an
example (very clumsy with two loops, but you can tweak that with apply
stuff).
HTH,
STG
levenshtein <- function(string1, string2, case=TRUE, map=NULL) {
# levenshtein algorithm in R
#
#
On Fri, Jan 23, 2009 at 08:28, Stefan Th. Gries wrote:
> Hans-Joerg Bibiko's function Levenshtein would help; cf. below for an
> example (very clumsy with two loops, but you can tweak that with apply
> stuff).
Like this maybe (sorry, should've thought about that earlier):
[...]
x<-rep(all.names,
I would like to do an R glm() with
family = binomial(link="loglog")
Right now, the cloglog link exists, which is nice when the data have a
heavy tail to the left. I have the opposite case and the loglog link
is what I need. Can someone suggest how to add the loglog link onto
glm()? It would be lov
I'm on Windows XP and it works fine for me, so the "only apparent reason for
the failure" may not be the real reason.
"BUT IT FAILS" isn't very explicit.
If your .trPaths definition works for you, why not use it?
As Duncan Murdoch said, you're really asking in the wrong place. There's a
forum s
Hello,
I have 2d data where x coordinate is not given in usual ascending
order (x1,...,x1+l; l>0), and instead in another, regular, but not
ascending or descending order (for illustration:
x1,-x1,x1+dx1,-x1-dx1,).y is an array which corresponds to the way
x is ordered. I have noticed that givi
Hello,
I'm looking for a textbook that can explain some of the math behind
the intro-to-intermediate stuff like ANOVA, multiple regression, non-
parametric tests, etc.
A little background: I took an intro stats course last year and
would like to further my education. Being as that was the
?strwrap
On Fri, Jan 23, 2009 at 10:47 AM, Derek Ogle wrote:
> Yes, that was exactly what I was looking for. Very concise. Thank you.
>
> My "real" example has many more items in each cell. I will now have to
> figure out how to put a "carriage return" after, say, every fourth item.
>
> Nevert
Duncan Murdoch stats.uwo.ca> writes:
>
> If you look at rJava:::.onLoad now that you can load the package,
> you'll see that it goes through a number of tests to try to find the
> right path.
Slightly different for me, but failure:
jvm.dll is on path (checked successfully with "where jvm.d
When including categorical variables in a regression, the default in R is
to set the first level as the base. Is there an option to specify a
different level as the base?
Regards,
Stephen Collins, MPP | Analyst
Health & Benefits | Aon Consulting
[[alternative HTML version deleted]]
(Slightly off topic and outside my area - but this may be of interest to
the R community)
WASHINGTON (January 16, 2009) -- Today, a new international competition
called the "Digging into Data Challenge" was announced by four leading
research agencies: the Joint Information Systems Committee (J
If anyone's interested, I got round it by doing:
tryCatch(lm(data~model,na.action=na.fail),error=function(err){NA})
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Neil Beddoe
Sent: 23 January 2009 15:40
To: 'Prof Brian Ripley'
C
Hi Dieter,
Thank you for pointing out the website. From the website it seems the bug has
been fixed early 2008 (see
http://biostat.mc.vanderbilt.edu/trac/Hmisc/changeset/582 ).
So I upgraded my Hmisc package to 3.4-4, which was published on 11/3/2008 and
hoped it would work. However, the pr
Dear R-list!
My question is related to an Anova including within and between subject
factors and unequal group sizes.
Here is a minimal example of what I did:
library(car)
within1 <- c(1,2,3,4,5,6,4,5,3,2); within2 <- c(3,4,3,4,3,4,3,4,5,4)
values <- data.frame(w1 = within1, w2 = within2)
valu
on 01/23/2009 11:10 AM Stephen Collins wrote:
> When including categorical variables in a regression, the default in R is
> to set the first level as the base. Is there an option to specify a
> different level as the base?
See ?relevel and the See Also's listed therein.
HTH,
Marc Schwartz
_
Hi,
contrasts(yourvariablename)=contr.treatment(levels(yourvariablename),base=3)
3 is the number of the category that you want to be your baseline. Replace
accordingly.
Cheers,
Daniel
-
cuncta stricte discussurus
-
-Ursprüngliche Nachricht-
I have a lm in R in the form
model <- lm( Z ~ A*B*C*D,data=mydata)
I want to run the model and include all interactions expect the 4 way
(A:B:C:D) is there an easy way of doing this? I then want to step down the
model eliminating the non-significant terms I understand step() does this
but how woul
Actually 'levels' works OK by ordering the x axis labels but since I have 52
weeks it gets too crowded.
Here's part of my dataset with a reproducible example.
sampDat <- "Week FryPassage
27 665
28 2232
29 9241
30 28464
31 41049
32 82216
33 230411
34 358541
35 747839
36 459682
37 609567
38 979475
I like:
Applied Linear Statistical Models by Neter, Kutner, Nachtsheim, and Wasserman
(McGraw Hill)
It is not specific to any stats package, but it gives a good mix of theory
behind the routines and how to apply them and covers a good breadth of material.
A must have for statistics and R is:
William Simpson gmail.com> writes:
> I would like to do an R glm() with
> family = binomial(link="loglog")
> Right now, the cloglog link exists, which is nice when the data have a
> heavy tail to the left. I have the opposite case and the loglog link
> is what I need. Can someone suggest how to ad
On 1/23/2009 12:44 PM, ppeetteerr wrote:
> I have a lm in R in the form
> model <- lm( Z ~ A*B*C*D,data=mydata)
> I want to run the model and include all interactions expect the 4 way
> (A:B:C:D) is there an easy way of doing this? I then want to step down the
> model eliminating the non-significan
Hello,
I am trying to plot a curve over points plotted with se's in xYplot (see
example below). I can get Figure 1 below to plot the data with error.
However, I keep getting a the error message
"Error using packet 1 object "y" not found"
Can anyone see what I am doing wrong?
Thanks!
John
Z ~ (A+B+C+D)^3 means give all main effects and interactions up to the 3 way
interactions, but not above (change ^3 to ^2 to limit to 2 way interactions).
You can do a semi manual stepwise procedure using the add1 and drop1 commands
or the addterm and dropterm commands in the MASS package. But
You might want to check out the following:
http://www.stochas.org/
http://www1.appstate.edu/~arnholta/PASWR/index.htm
http://turtle.gis.umn.edu/pmwiki/pmwiki.php/StatisticsandDatawithR/HomePage
http://www.janehorgan.com/
I own all of these books and like them.
The book by Dr. Jan Horgan:
"Probab
If you don't want to be on your own, and you are looking for more
statistics courses than you have available locally, Texas A&M University
statistics department offers some single courses, a 4-course
certificate, and an entire masters degree, all online, no campus visits
required. I am in their ma
Hi,
I am working with a very large dataset, and am using the 'filehash' package
to manage such a large file.
While I have no problem accessing objects that I load into a database, I was
hoping there is a better way to append to objects already in the database.
The only way I know now to append t
Ok, here is a bit more information:
R is version 2.7.1 (2008-06-23)
A constructed example:
> x<-c(1,-1,2,-2,3,-3,4,-4,5,-5)
> y<-c(1,0,2,0,3,0,4,0,5,0)
> plot(x,y,type='l') #bad
> plot(x,y) # this is how it should look like
So what we should see here is a flat y=0 for x<0 and identit
On Fri, Jan 23, 2009 at 5:15 AM, Patrick Burns wrote:
> If I understand properly, you want '<-' to be
> a generic function, which it currently isn't.
> There may be a way to fake that (I can't think
> of any).
>
> But I'm wondering if you should rethink what
> you want. The only reason that I can
On Fri, 23 Jan 2009, Andersson, Jafet wrote:
Hi all,
I want to modify a large number of text files (ca 4000) by replacing a
value found on a particular line in them with a value from an R object.
For a single file I would normally use:
con<-file ("foo.txt", open="r+")
content<-
I would like to try to do a journal club session for my family practice
residents on the uses, and especailly the pitfalls, of compound outcome
variables, like "stroke or myocardial infarction or coronary bypass
surgery." They appear frequently in clinical trial literature. Can
anyone recommend an
Dear Todor,
How about this?
x<-c(1,-1,2,-2,3,-3,4,-4,5,-5)
y<-c(1,0,2,0,3,0,4,0,5,0)
DF<-data.frame(x,y)
plot(with(DF,DF[order(x),]),type='o')
HTH,
Jorge
On Fri, Jan 23, 2009 at 1:41 PM, Todor Kondic wrote:
> Ok, here is a bit more information:
>
> R is version 2.7.1 (2008-06-23)
>
> A const
On Fri, Jan 23, 2009 at 9:40 AM, Wacek Kusnierczyk
wrote:
> you might want to specify what 'completely unrecoverable' means, and
> what approaches are allowed.
>
> for the former, i guess that:
> - 'incompletely recoverable' means that there is at least one function
> name in the global environme
Todor Kondic gmail.com> writes:
>
> Ok, here is a bit more information:
>
> R is version 2.7.1 (2008-06-23)
>
>
> So what we should see here is a flat y=0 for x<0 and identity for x>0.
> Instead, we have a saw-like shape where e.g y(x=-1) is connected to
> y(x=1) .
>
> This is of course min
(resending to include r-help)
Monte Milanuk wrote:
Hello,
I'm looking for a textbook that can explain some of the math behind
the intro-to-intermediate stuff like ANOVA, multiple regression, non-
parametric tests, etc.
A little background: I took an intro stats course last year and
woul
On Friday 23 January 2009, David Freedman wrote:
> library(MASS); library(boot)
> #create intercorrelated data
> Sigma <- matrix(c(1,.5,.4, .5,1,.8, .4,.8,1),3,3)
> Sigma
> dframe<-as.data.frame(mvrnorm(n<-200, rep(0, 3), Sigma))
> names(dframe)<-c('disease','age','ht') #age and ht are predictors
>>
>> This is of course minor (actually asymptotically, no annoyance at
>> all). I am just mentioning it for 'completness' sake and because a
>> divinely ideal plotting function should cope with data given in any
>> order.
>>
>
> The problem here is that a divinely ideal plotting function
> for o
Hello R-experts,
I want to ask I anyone knows a way to obtain a suitable value for the
parameter of the box-cox transformation for time series (aiming to an Arima
fit). Adittionally, I need to implement this to a list with a lot of series
(about 5300), so if the method is suitable for an FOR-ruti
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