Is this what you want?
> a<-c("a b c","1 2 3","q - 5")
> a
[1] "a b c" "1 2 3" "q - 5"
> sapply(strsplit(a,"[[:blank:]]"),function(x)x[1])
[1] "a" "1" "q"
Edna Bell wrote:
>
> I have a set of character results. If one of the characters is a
> blank space, followed by other characters, I want
one more, shorter, solution.
> a
[1] "a b c" "1 2 3" "q- 5"
> gsub("\\s.+","",a)
[1] "a" "1" "q-"
Edna Bell wrote:
>
> I have a set of character results. If one of the characters is a
> blank space, followed by other characters, I want to end at the blank
> space.
>
> I tried strsplit, b
Hi.
You should study "An Introduction to R" manual.
It is installed with R in PDF format and is accessible from the menu (Help
-> Manuals (in PDF) -> )
There are several links in the R web site.
Go to http://www.r-project.org/ and see links under the word "Documentation"
in the left frame.
There
colorbar() from the package matlab.
nightly.py wrote:
>
> Hi, I have some data which I was plotting using image(). I wanted to
> add a vertical color key to the plot and I found that heatmap.2 in
> gplots does let me add a color key. However, I was thinking of a
> vertical bar with the co
Hi.
You will find some useful information in the
http://r-spatial.sourceforge.net/
Particularly, Fig. 07 in the Graph gallery.
Package spmaps can be used to extract desired boundaries from the mapdata
and convert them to the format suitable for sp and others.
Lawrence D. Brenninkmeyer wro
Nick Chorley-3 wrote:
>
> I have a large amount of data that I would like to create a histogram of
> and
> plot and do things with in R. It is pretty much impossible to read the
> data
> into R, so I have written a program to bin the data and now have a list of
> counts in each bin. Is it possib
Hello Nick,
Wednesday, August 15, 2007, 1:18:34 PM, you wrote:
NC> On 15/08/07, Vladimir Eremeev <[EMAIL PROTECTED]> wrote:
NC> Nick Chorley-3 wrote:
>>
>> I have a large amount of data that I would like to create a histogram of
>> and
>> plot and do
This is a FAQ.
http://cran.r-project.org/bin/windows/base/rw-FAQ.html#Can-I-run-R-from-a-CD-or-USB-drive_003f
Erin Hodgess wrote:
>
> Dear R People:
> Has anyone run R from a flash drive, please?
> If so, how did it work, please?
> Thanks in advance!
>
--
View this message in context:
http
Vlad Skvortsov wrote:
>
> '?predict.lm' says that the prediction intervals returned by predict()
> are for single observation only. Is there a way to specify the desired
> number of observations to construct the interval for?
>
You can generate the desired sequence of new values using seq o
Hi!
seq(along=x) %in% grep("e",x)
Steve Powell-4 wrote:
>
> I have a vector of strings
> x=c("w","ex","ee")
> And I want to get a logical vector showing the positions where my search
> string "e" matches the elements partially, i.e. is at least the left-hand
> part of the target strings, i.e.
I have found the error in my script which was semi-automatically translated
from the other person's MATLAB code.
The error is that c was assigned a value inside a function.
That is the function body contained the following instructions
c<-nw*czr
d<-nw*cz
rFren<-0.5*(abs((cz-c)/(cz+c))^2+abs
Vladimir Eremeev wrote:
>
> This is a source code package.
> Install Rtools (http://www.murdoch-sutherland.com/Rtools/), then you
> should be able to compile source packages from the Windows command prompt
>
> For example,
>
> c:\downloads>R CMD INSTALL biOps_0.1
This is a source code package.
Install Rtools (http://www.murdoch-sutherland.com/Rtools/), then you should
be able to compile source packages from the Windows command prompt
For example,
c:\downloads>R CMD INSTALL biOps_0.1-1.tar.gz
provided you have downloaded the file biOps_0.1-1.tar.gz to
(the same mail was sent to the author)
When I called the function DEoptim with control=list(strategy=1) or
control=list(strategy=2)
I got the error:
Error in mui[rtd + 1, i] : incorrect number of dimensions
Analysis of the source code of the DEoptim reveals the following fragment
if (con$
Use rscript
Rscript myscript.R
or
Rscript -e 'cat("Hello!\n")'
will show Hello! on the console.
R CMD BATCH writes its output to the file myscript.Rout
Paul Smith wrote:
>
> Dear All,
>
> I am trying to write my first R script. The code is simply
>
> cat("Hello!\n")
>
> However, when I
--
View this message in context:
http://www.nabble.com/How-to-mask-or-escape-%22%3D%22-tf4354174.html#a12406926
Sent from the R help mailing list archive at Nabble.com.
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-
I have defined a function with several arguments and have it stored in the
.RData file.
The 'function head' is defined as follows
EstimALIConc
<-function(sdname,SZ,W,farea,watri,biomodel,start.part=1,nparts=20,method=c("optim","DEoptim"))
{
[ blah-blah-blah ]
(function body doesn't matter)
}
For example,
fp<-file("abc.csv","r")
c.row<-scan(file=fp,sep=",",nlines=1) # "what" argument is omitted for
bevity as it doesn't matter
rows<-c.row
while(length(c.row)>0) {
c.row<-scan(file=fp,sep=";",nlines=1);
rows<-rbind(rows,c.row)
}
close(fp)
If you want to read a file by parts, the
It seems, I don't understand something, or there is a bug in R.
I have made some experiments after my yesterday post about using "=" with -e
switch to the Rscript.
Now, I've found:
(1)
C:\users\wl\trainings\r>rscript --verbose -e "mean(x=1:3)"
running
'C:\Program Files\R\bin\Rterm.exe --slave
See the article "Cluster" in R Task Views
http://cran.at.r-project.org/src/contrib/Views/Cluster.html
It lists names of packages for clustering analysis, which you can install.
Or, go to choose another CRAN mirror closest to you from the R web site,
then click on 'Task views' in the left frame.
Dear r-help,
I have a matrix, suppose, 10x10, and I need the matrix 5x5, having
in each cell a mean value of the cells from the initial matrix.
Please, point me to a function in R, which can help me doing that.
Digging the documentation and mail archives didn't give me a result.
Tha
[9,] 9 19 29 39 49 59 69 79 89 99
jh> [10,] 10 20 30 40 50 60 70 80 90 100
>> rmean
jh> [,1] [,2] [,3] [,4] [,5]
jh> [1,] 6.5 26.5 46.5 66.5 86.5
jh> [2,] 8.5 28.5 48.5 68.5 88.5
jh> [3,] 10.5 30.5 50.5 70.5 90.5
jh> [4,] 12.5 32
Dear Robin,
Thank you, seems it is what I need.
---
Best regards,
Vladimirmailto:[EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-proje
Dear Sean,
Thursday, July 27, 2006, 3:31:31 PM, you wrote:
SOR> Hi Vladimir,
SOR> I was wondering whether this was image related :-)
Yes, that's right, I am doing image processing with R.
SOR> would one of the image related libraries do it for you?
SOR> looking at
SOR> http://cran.r-project.org
Dear useRs,
While exploring new R packages, I have found the Rattle.
This screenshot http://rattle.togaware.com/rattle-correlation.png
is very interesting
(others are in http://rattle.togaware.com/rattle-screenshots.html ).
Which function was used to produce this plot?
Is such plotting of the cor
Dear useRs,
Is it possible to get the R package usage statistics?
That is, does R contain any tools to estimate which packages were
used and how often?
I am going to temporary change the workplace and packing the data
and their processing scripts on my computer in order to continue my
Here is the perl script with some comments
#!/bin/perl -w
use File::Find;
# we use the standard Perl module.
# its procedure will scan the directory tree and put all package names to the
hash
# along with counting the number of their loadings.
%pkgs=("base"=>-1,# w
Dear Roger,
Tuesday, September 26, 2006, 4:16:38 PM, you wrote:
RB> On Tue, 26 Sep 2006, Vladimir Eremeev wrote:
>> Here is the perl script with some comments
RB> ??
Sorry, forgot to mention, this script is designed to run from the root
of the working directory tree.
It scans a
http://r-spatial.sourceforge.net
Linda Smith wrote:
>
> I have a netcdf gridded file with LCC projection. I can easily use
> image.plot to visualize it. However, as the axises are in X,Y, not Lat and
> Lon, I could not add state or country maps onto it (or lat lon
> information).
> I do have
Schmitt, Corinna wrote:
>
> I still have problems with the reading of a matrix.
>
> Input: matrixData6.txt
>
> A-Paar B-Paar C-Paar D-Paar E-Paar
> A 1 3 5 7 9
> B 2 4 6 8 10
>
>
> R-commands:
> y=read.table(file="Z:/Software/R-Programme/matrixData6.txt")
> y
>
> Result:
> A.Paar B
If your country or state borders are polygons or polylines, you could convert
them to desired projection using
the function project from the package rgdal.
Latitude-longitude grid also could be added by generating desired polylines
in lat-lon and converting them to the desired projection using p
I have installed RGTk2 to satisfy other package requirements.
I am not planning to use it in my own work.
Occasionally I search through the R help using the help.search() function,
and every time it returns me lots of references to the functions in the
RGtk2 package, which I don't need.
I would
Hello Linda,
Friday, April 6, 2007, 2:47:43 AM, you wrote:
LS> On 4/5/07, Vladimir Eremeev <[EMAIL PROTECTED]> wrote:
VE>> If your country or state borders are polygons or polylines, you could
convert
VE>> them to desired projection using
VE>> the function project
What operating system do you use?
If you use Windows, than open the Control Panel, double click on the System
icon, go to "Advanced" tab, press
"Environment variables" button, then press "New" to create one more new
variable, enter "http_proxy" as the "Name" of variable, and
"http://address.of.y
You didn't describe the exact format of the .gpr files.
There are 32 heading lines in each file, which are now hidden from R
community.
You 'skip' 31 of them in read.table, and one more plays header ('header=T').
Since you are using read.table, your files are usual ascii files.
You shoud use 'cat
Try using cat, paste(c("c(",paste (. .. .. collapse=","),")")), format,
formatC and others
francogrex wrote:
>
> Hello I am using the "for (i...)" and a sink() into a file. But the output
> I am having is not arranged in either a vector or any other good
> structure. I would like to have the o
Consider sapply and get.
There might be something like the following (untested)
fn<-function(l){ # l is supposed to be a letter. Errors will occur
otherwise.
#constructing names
dfr.name<-paste(toupper(l),"INDSLIM",sep="")
column.name<-paste(tolower(l),"region",sep="")
#retrieving data fr
gracezhang wrote:
>
> Hi,
>
> I failed to search for R package providing random number generator of
> "Park and Miller".
> Anyone know any R package supporting this kind of function?
>
I failed too.
However, here is the source code http://www.firstpr.com.au/dsp/rand31/
which can be either ea
By the way, AFAIK, R uses the Mersenne-Twister random number generator, which
"has a much better reputation for producing numbers than any linear
congruential PRNG" (the same url, http://www.firstpr.com.au/dsp/rand31/)
gracezhang wrote:
>
> I failed to search for R package providing random numb
m<-cbind(m,0)
m[m[,3]>m[,4],5]<-1
colnames(m)[5]<-"censoring"
raymond chiruka wrote:
>
> i would like to add a variable to an existing matrix by manipulating 2
> previous variables eg for the data
> m
> treat strata censti survTime
> [1,] 1 2 284.684074 690.49
ls(pattern=".*777.*")
Schmitt, Corinna wrote:
>
> Dear R-Experts,
>
> in my program I have a big workspace. Now I want to look for all
> variables which have the letters "777" in their name (e.g. ask777first)
> and afterwards I need to delete those variables. How can I reach this
> aim?
>
-
sorry, forgot to delete objects.
rm(list=ls(pattern=".*777.*"))
Vladimir Eremeev wrote:
>
> ls(pattern=".*777.*")
>
>
> Schmitt, Corinna wrote:
>>
>> in my program I have a big workspace. Now I want to look for all
>> variables which h
t; l used matrix to genarate the data
rc> thanks in advance
rc> Vladimir Eremeev <[EMAIL PROTECTED]> wrote:
rc> m<-cbind(m,0)
m[m[,3]>>m[,4],5]<-1
rc> colnames(m)[5]<-"censoring"
rc> raymond chiruka wrote:
>>
>> i would like to add a
Vadim Ogranovich wrote:
>
> Hi,
>
> I ran into a problem of converting a text representation of an expression
> into parsed expression to be further evaluated inside lm ().
>
>> n <- 100
>> data <- data.frame(x= rnorm (n), y= rnorm (n))
>> data. lm <- lm (y ~ x, data=data)
>>
>> ## this
I usually install a new version over the old one (in the same directory).
I did this since R 1.xx, using windows 2000 and then windows XP.
No bugs were found, everything always works fine.
Iasonas Lamprianou wrote:
>
> Hi I am using R version 2.4.1. How can I upgrade to version 2.5 without
> h
For me, the simplest way to find, what is wrong, would be tracing the R code:
library(debug)
mtrace(cph)
cph(Surv(time.sur, status.sur)~ strat(colon[,13])+colon[,18]
+colon[,20]+colon[,9], surv=TRUE)
... then find the place of the error and analyze how to adjust the function
call arguments to av
Here is some information on this regression in R
http://tolstoy.newcastle.edu.au/R/help/06/02/21153.html
Abdus Sattar wrote:
>
> I am want to use tobit regression for left censored panel/longitudinal
> data. Could you please provide me the name of "library" and/or "package"
> that will give me
Vladimir Eremeev wrote:
>
> For me, the simplest way to find, what is wrong, would be tracing the R
> code:
>
> library(debug)
> mtrace(cph)
> cph(Surv(time.sur, status.sur)~ strat(colon[,13])+colon[,18]
> +colon[,20]+colon[,9], surv=TRUE)
>
> ... then find the
To create 6th column in the matrix m, you should use the cbind function.
To calculate the vector of pairwise min or max values, you should use the
pmin and pmax functions:
act.surv.time<-pmin(m[,"censoringTime"],m[,"survivalTime"])
m<-cbind(m,act.surv.time)
raymond chiruka wrote:
>
> hie l wou
Dear all,
I have several files with Matlab code, which I am translating to R.
For the zero-level approach, I took the very old shell script from R-help
archives, which has made some obvious leg-work such as replacement of "="
with "<-".
Now I am translating indexing, matrix operations and funct
Which function implements the piecewise cubic Hermite interpolation?
I am looking for equivalent of matlab's interp1 with the method = 'pchip'
Here is the reference
http://www.mathworks.com/access/helpdesk/help/techdoc/index.html?/access/helpdesk/help/techdoc/ref/interp1.html&;
--
View this me
Did you try manually opening the file mentioned in the browser
(Z:\Software\R\R-2.5.0\doc\html\index.html) ?
Does this file exist?
Was the html help installed?
Schmitt, Corinna wrote:
>
> Hallo,
>
> I just updated to the new version of R by installing everything new. Now
> I have a problem wi
he html help?
>
> Corinna
>
> -Ursprüngliche Nachricht-
> Von: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Im Auftrag von Vladimir Eremeev
> Gesendet: Dienstag, 8. Mai 2007 12:22
> An: r-help@stat.math.ethz.ch
> Betreff: Re: [R] trouble with help
>
> Did you
Looks like you are reading manuals and these mailings insufficiently
carefully.
?apply says that if its second argument is 1, it gives you what you want.
Gabor Csardi has also written you this.
If you have several vectors, not a single matrix, you can use pmin:
pmin(a[1,],a[2,],a[3,],a[4,],a[5,
'pchip' from the 'signal' package seems to do the desirable operations.
Vladimir Eremeev wrote:
>
> Which function implements the piecewise cubic Hermite interpolation?
>
> I am looking for equivalent of matlab's interp1 with the method = 'p
Urania Sun wrote:
>
> I have a dataset of 1 records which I want to use to compare two
> prediction models.
>
> I split the records into test dataset (size = ntest) and training dataset
> (size = ntrain). Then I run the two models.
>
> Now I want to shuffle the data and rerun the models. I
elyakhlifi mustapha wrote:
>
> I saw the R-help to run some R programs in batch I used it like this
>
>> R CMD BATCH C:/Documents and Settings/melyakhlifi/Bureau/calcara.r
> Erreur : erreur de syntaxe dans "R CMD"
>
> but without success!!!I don't work on linux but on windows IS it the same
>
elyakhlifi mustapha wrote:
>
> hello,
> can you help me I need to seperate words and symbol in a mathematics
> formula as follow
>
> C744=(C627*C177)/100
>
> How could I do please?
>
If you need to simply split a character vector, use strsplit.
This and previous your posts suggest you need
Dear R experts,
I have a Matlab code which I am translating to R in order to examine and
enhance it.
First of all, I need to reproduce in R the results which were already
obtained in Matlab (to make sure that everything is correct).
There are some matrix manipulations and '\' operation among the
Vladimir Eremeev wrote:
>
> Dear R experts,
>
> I have a Matlab code which I am translating to R in order to examine and
> enhance it.
> First of all, I need to reproduce in R the results which were already
> obtained in Matlab (to make sure that everything is correct)
Vladimir Eremeev wrote:
>
> Dear R experts,
>
> I have a Matlab code which I am translating to R in order to examine and
> enhance it.
> First of all, I need to reproduce in R the results which were already
> obtained in Matlab (to make sure that everything is correct)
elyakhlifi mustapha wrote:
>
> hello,
> how can I do to drop C from this character "C325" ?
>
1. if C is always single and always first:
> substring("C325",2)
2. more generic solution, drops all letters
> sp<-unlist(strsplit("C325",split="[A-Z]"))
> sp<-sp[nchar(sp)>0]
> sp
--
View this m
d. sarthi maheshwari wrote:
>
> Hi,
>
> I am struggling with using R CMD BATCH command. Kindly suggest solution to
> the following problem.
>
> I have a function named CinC with accept two input parameters. This can be
> shown as:
>
> CinC <- function(start, end)
>
> where start and end bot
mister_bluesman wrote:
>
> Basically, I’m trying to install rJava on my windows XP machine. I think I
> have succeeded in doing so as it appears in the list when i type library()
> in R.
>
> However, when i type ‘library(rJava)’ I get an error dialog box saying:
>
> 'This application has fail
mister_bluesman wrote:
>
> Ah thanks for that. That seems to have done the trick. But I'm not
> sure whether I have copied the right jvm.dll file into the path.
>
> I have 3 places where a jvm.dll file can be found:
>
> ~\Java\jre1.6.0_01\bin\client -this is the one i copied
> ~\Ja
I was solving similar problem some time ago.
Here is my script.
I had a data frame, containing a response and several other variables, which
were assumed predictors.
I was trying to choose the best linear approximation.
This approach now seems to me useless, please, don't blame me for that.
Howeve
Vladimir Eremeev wrote:
>
> I was solving similar problem some time ago.
> Here is my script.
> I had a data frame, containing a response and several other variables,
> which were assumed predictors.
> I was trying to choose the best linear approximation.
> This app
RSiteSearch("legend outside plot")
will bring you many links to the discussions of this question.
layout perfectly allows everything.
typical sequence looks like this
This divides the device region by two parts one below another:
layout(matrix(c(1,2),byrow=TRUE), heights=[blah-blah-blah], [some
Sorry, I'm stuck. :)
I am writing a function, which would fit either one linear model or another
one, depending on its argument model.type.
And I don't want to use several if's, because R allows doing it with much
more beauty.
That is I am looking for prettier alternative to the following
AB2C<
snow still exists, and there is one more package snowFT on CRAN (FT stands
for Fault Tolerant)
Probably, you didn't find it because of typing its name in capitals.
hodgess wrote:
>
> According to the R-help, at one time there was a package called SNOW. It
> doesn't seem
> to exist anymore.
>
There are R interfaces to MPI and PVM on CRAN, which are Rmpi and RPVM,
respectively.
hodgess wrote:
>
> I was wondering if there were any packages for parallel programming in R.
>
> According to the R-help, at one time there was a package called SNOW. It
> doesn't seem
> to exist anymor
") {
> .Class <- method
> NextMethod("mymodel")
> }
>
> mymodel.S <- function(a, b, method = "S") cat("S:", a, b, method, "\n")
> mymodel.HK <- function(a, b, method = "S") cat("HK:", a, b
These are not functions.
These are separate products (one more is bison), aimed to help in creating
programming language interpreters.
You should know the C programming language and be familiar with the
algorithm theory, the finite state machine theory and with the LALR
grammatics, in order to su
Great!
I was thinking about adding such a feature in the future.
Gabor Grothendieck wrote:
>
> Note that a significant difference between the two solutions is that
> the OO solution allows new methods corresponding to "method="
> to be added without changing the function holding the statements.
By defining your own function.
You can get the function body by typing its name in the R command line and
pressing Enter.
Copy-paste the function body in ascii file (source R code), redefine it as
you like, for example, by adding desired argument and code for processing
it, then source that file
apply(dfr,1,FUN=function(x){
cat(c(x[1],
ifelse(x[2]==x[3],x[2],paste(x[2],x[3],sep="-")),"\n"),
file="filename.txt")
})
This code assumes the data frame with at least 3 columns, errors will occur
if there will
Yes, it is.
The original is here
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/92829.html
However, it requires some modifications.
Here they are. Sorry, I can test it only in Windows.
search.source <- function(file, path=Sys.getenv("PATH"), ...)
{
for(p in strsplit(path,.Platform$path.se
When I update.packages(), R shows the dialog window, listing CRAN mirrors and
asks to choose the CRAN mirror to use in this session. Then, R uses this
address and never asks again until quit.
Is there any way to make R ask for the CRAN mirror again, except restarting
it?
I am just trying to save
I used similar empty space to place the legend, by specifying the placement
coordinates to the key argument of xyplot.
This was rather long time ago, and I had to explicitly form the list, used
as the key argument for this function. Lattice has evolved since that, some
automation has appeared.
T
Does
tail(capture.output(traceback()),n=1)
do what you want?
that is
error <- function(...) {
msg <- paste(..., sep = "")
if(!length(msg)) msg <- ""
if(require(tcltk, quiet = TRUE)) {
tt <- tktoplevel()
tkwm.title(tt, "Error")
tkmsg <- tktext(tt, bg = "white")
pa
Vladimir Eremeev wrote:
>
> Does
> tail(capture.output(traceback()),n=1)
> do what you want?
>
> that is
>
Hmmm... Seems, no...
Having the earlier error() definition and
bar<-function() error("asdasdf")
ft<-function() bar()
> ft()
I
irishhacker wrote:
>
> Why does the R mailing list need such an unusual and customized user
> interface?
>
There was a discussion of this some time ago on the list.
I believe, RSiteSearch("r-help mailing list forum") or some other similar
keywords will find it.
irishhacker wrote:
>
> What's
I have written some bindings from the SNNS (Stuttgart Neural Network
Simulator) to R.
However, this work is not finished since the lack of interest to it and lack
of time.
At the moment, I use the mixture of scripts for R, cmd.exe, bash, and SNNS'
batchman (latter two under cygwin) in my work.
SN
Christoph Scherber-2 wrote:
>
> Dear R users,
>
> I have a correlation matrix for a dataframe called "synth", for which I
> now want to select only those cells that have correlations larger than
> +/-0.6:
>
> synth=data.frame(x=rnorm(10,1),y=rnorm(10,2),z=rnorm(10,0.5))
>
> w=cor(synth,use=
Tim Holland wrote:
>
> Is there a way in R to select certain characters from a line of text? I
> have some data that is presently in a large number of text files, and I
> would like to be able to select elements of each text file (elements are
> always on the same line, in the same position) an
Ian McCarthy wrote:
>
> I am trying to access a dll with dyn.load, but I get an error message box
> titled "R Console: Rgui.exe - Unable to Locate Component". The error
> message itself states "this application has failed to start because
> libifcoremdd.dll was not found. Re-installing the appli
One more question, inspired by this one, just to increase my R skill level.
Earl F. Glynn wrote:
>
> I need to process some datasets where the configuration information was
> stored in .INI-like files, i.e., text files with sections like this:
>
> [Section1]
> var1=value1
> var2=value2
> [Sect
Christophe Pallier wrote:
>
>> "var1=value1", "A=value3" is almost pure R code.
>> Is it possible to use this feature to solve the problem?
>
> Along the same lines: you may write a short script that converts the ini
> file into R code that can be sourced.
>
>>From your example, you can genera
The "R Data Import/Export" guide was mentioned already, it contains
everything you should know about data exchange between R and other software.
In case it says nothing about dates, try as.Date() and strftime().
For your example below,
as.Date("1/31/1994",format="%m/%d/%Y")
works.
ngottlieb w
runner wrote:
>
> I want to test if the files are already in my current folder before I
> download or copy from somewhere else. What's in my mind is to check if a
> file is open-able in current folder. Is there a way to do this, like in
> Perl:
> if (open()) { do sth}?
>
> To put it another w
Stan Hopkins wrote:
>
> I see a rich set of graphic device functions to redirect that output. Are
> there commands to redirect text as well. I have a set of functions that
> execute many linear regression tests serially and I want to capture this
> in a file for printing.
>
> Thanks,
>
> St
Manuele Pesenti wrote:
>
> Dear R users,
> how can I extrapolate values listed in the summary of an lm model but not
> directly available between object values such as the the standard errors
> of
> the calculated parameters?
>
> for example I got a model:
>
> mod <- lm(Crd ~ 1 + Week, data
amna khan wrote:
>
> I did not find any function of graph which plot one variable on x-axis and
> 2
> or more than 2 variables on y-axis.
>
You can use xyplot() from the package lattice.
library(lattice)
xyplot(y1+y2+y3~x)
I suspect, the problem is, that plot() erases everything that was plot
Try Sys.setlocale().
marco.R.help marco.R.help wrote:
>
> I am trying to use "sub" to replace patterns in a character array that
> contains german names with german special characters. I have the following
> problem:
>
>> sub("\\xdf","ss","Wei\xdferitzkreis")
> Error in sub(pattern, repla
Owe Jessen wrote:
>
> Hi all,
>
> this should be a simple question, but I haven't been able to do it
> right. I am trying to download multiple stock quotes in a loop, so that
> every timeseries is safed with the symbol of the stock. Can anybody help
> me out? Here's the code:
>
> require(t
Use get() instead of eval().
And, probably, some arguments are missing in call to paste().
Maybe, extension?
That is,
for(i in test)
write.table(get(i),file=paste(i,"txt",sep="."),row.names=FALSE,sep="\t")
If you want file names matching exactly names of your matrices, and being
without ext
"Writing R Extensions" manual contains chapters dedicated to parsing and
evaluating of the R extensions from C.
Also, I vaguely remember I've seen something like "Embedding R" somewhere in
manuals.
R can be compiled as a shared library object, that you can dynamically load
from your application an
GOUACHE David wrote:
>
> Hello all,
>
> I have a vector of character strings, in which I have letters, numbers,
> and symbols. What I wish to do is obtain a vector of the same length with
> just the numbers.
> A quick example -
>
> extract of the original vector :
> "lema, rb 2%" "rb 2%" "rb
; That's would be great if R programs
K> can be "compiled" as shared library object(.lib? or .dll ? ) Can you please
K> give more details about that?
K> Best,
K> Feng
K> -Original Message-
K> From: [EMAIL PROTECTED]
K> [mailto:[EMAIL PROTECTED] On Behal
You can use
choose.files(caption="Choose data file
please!",multi=FALSE,filters=Filters["All"])
This will show the prompt in the file selection dialog and also allows you
to restrict the list of possible choises with a filter.
Ralf Finne wrote:
>
> I am trying to make a program to ask the use
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