Displaying 20 results from an estimated 6000 matches similar to: "Managing R objects with 'make'"
2012 Mar 24
1
Append to file in loop
My files are on disk and they are regular text files named
file_1 file_2 file_3 file_4 and file_5 with extension .saam
The separator is sep='' (ie, white space)
I want to append 'XFile' at the end of those files. XFile is also on disk.
file.append("file_1.saam", "XFile.saam"); file.append("file_2.saam",
"XFile.saam")...
works but it
2012 Mar 23
1
Append to files in loop
Hi ReXperts,
I have a file 'XFile' that I wish to append to the end of file1, file2,
file3, file4, and file 5. Can't figure out how to set up the loop. Please
help.
Thank you,
--
Luisin Galindo, PhD
Director, Departamento de Medicina Matematica
Centro de Estudios Avansados en
Simulacion, Analysis, y Modelacion
Puerto Castilla, Spanish Honduras
Centro America
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2000 Jan 23
1
size limits
Hi,
I have a few questions about how to handle large data sets in R.
What is the size of the largest matrix that R can comfortably deal with?
Is this size limit imposed by R's software, or is it a question
of the machine that one runs on?
How does one go about choosing reasonable values of vsize
and nsize?
I have a data set with about 1,000,000 rows, and 30
2003 Mar 24
1
APC Modelling and the GLM function
Hi all
Apologies for any cross posting.
I have encountered a rather bizarre "problem" in Splus and R. I am using Age-Period-Cohort models to model cervical cancer and have run the same data
on both R (v.1.4.1 & v1.6.2) and Splus (version 6.0). I used the same command line in both Splus and R: glm(cases~-1+as.factor(age)
2009 Jan 19
1
further notes on model.frame issue
This is a follow-up on my note of Saturday. Let me start with two important
clarifications
- I think this would be a nice addition, but I've had exactly one use for it
in the 15+ years of developing the survival package.
- I have a work around for the current case.
Prioritize accordingly.
The ideal would be to change survexp as follows:
fit <- survexp( ~ gender,
2008 Mar 18
4
Overriding a file without causing duplicate definitions
Hello folks.
I''ve got a problem that I can''t work out the solution to.
My base workstation node definition says essentially:
node base-workstation {
file { etc-sudoers:
name => "/etc/sudoers", ...
}
}
This works fine, all of our workstations get a standardised sudoers file.
However, I have one user on a workstation who needs a specialised
sudoers file.
2011 Jan 13
1
What does the shell() command do?
Dear R community,
I am trying to understand what the shell() function does.
An example is:
xfile <- shell(paste("dir/b ",
paste(directory.folder,"file.name",sep="")),intern=T)
I'm afraid I wasn't able to completely understand the explanation under the
Help files.
Thanks for your help!
Leanne.
--
View this message in context:
2007 Oct 29
12
Boolean expressions
I''m trying to write a wrapper definition for the file type to make it a
bit smarter. I have a basic version working fairly well:
define xfile($owner = root, $group = root, $mode = 644, $source,
$backup = main, $recurse = false, $ensure = file) {
file { $name:
mode => $mode,
owner => $owner,
group => $group,
backup => $backup,
recurse
2012 Dec 07
2
Assigning cases to groupings based on the values of several variables
Dear R-ers,
my task is to simple: to assign cases to desired groupings based on the
combined values on 2 variables. I can think of 3 methods of doing it.
Method 1 seems to me pretty r-like, but it requires a lot of lines of code
- onerous.
Method 2 is a loop, so not very good - as it loops through all rows of
mydata.
Method 3 is a loop but loops through fewer lines, so it seems to me more
1997 Jun 23
0
R-beta: R and Mac
Hello,
Is there anyone using R in the Mac?
If yes, my question is so simple. I have just
started to use R ( I am a user of the Mac) and
I would like to analyse a data, on a directory in my Mac,
using R.
How can I do to bring the data file to use it in R.
I have tried like Splus, the function:
mydata<-matrix(scan("data"),nrow=...,ncol=....)
but it doesn't work.
Thanks
Halima
2005 Jul 19
1
S4 Dispatching
Is it possible for S4 to (continue) dispatch to a class
created during dispatching? The code below doesn't work;
is this not possible or have I ommitted something?
Concept was to create a SEXP with R_AllocatePtr, give it
a class attribute, and continue dispatch. Example code
below omits multiple parameters that can be different types.
Essentially, any parameter would be converted to an
2013 Dec 16
1
External pointers and changing SEXPTYPE
Dear Developers,
I've been struggling through writing R extension in C. I've been using
an external pointer to store my data (please see sample below). I
encountered a very weird erroneous behaviour: when I tried to use my
external pointer to a structure holding several types of data,
including SEXPs, I discovered that SEXPs change their types between
returning from initialization
2010 Apr 26
1
help with code
I am new to R and have tried for a good while to figure out how to code this
in R. The dataset below:
FTIStandKey
State
County
FTITract
CoverType
Ver_CT
V_Origin
V_SpGrp
NAH6005-001
Texas
Jasper
NAH6005
PPLB-2000-U
PPLB-2000-U
P
P
NAH6005-002
Texas
Jasper
NAH6005
NHHX-1950-O
NHHX-1950-I
N
H
NAH6253-001
Texas
Tyler
NAH6253
PPLB-2001-U
PPLB-2001-U
P
P
2010 Apr 26
1
Help with replacement of certain values in dataset with SAS code equivalent
I am new to R and have tried for a good while to figure out how to code this
in R. The dataset below:
FTIStandKey
State
County
FTITract
CoverType
Ver_CT
V_Origin
V_SpGrp
NAH6005-001
Texas
Jasper
NAH6005
PPLB-2000-U
PPLB-2000-U
P
P
NAH6005-002
Texas
Jasper
NAH6005
NHHX-1950-O
NHHX-1950-I
N
H
NAH6253-001
Texas
Tyler
NAH6253
PPLB-2001-U
PPLB-2001-U
P
P
2010 Apr 05
2
find the "next non-NA" value within each row of a data-frame
#I wish to find the "next non-NA" value within each row of a data-frame.
#e.g. I have a data frame mydata. Rows 1, 2 & 3 have soem NA values.
mydata <- data.frame(matrix(seq(20*6), 20, 6))
mydata[1,3:5] <- NA
mydata[2,2:3] <- NA
mydata[2,5] <- NA
mydata[3,6] <- NA
mydata[1:3,]
#this loop accomplishes the task; I am tryign toi learn a "better" way
for(i
2012 Jul 17
1
problem with function
Dear list,
I have a problem with defining a function (see below) to read my testfile
(see testfile). My function only returns mydata I wish to work with
attr(mydata, 'fc') as well (for labelling a plot). Principally it works if
I do not insist on this function but it would be much easer if it is
possible to return mydata AND attr(mydata, 'fc') by using a function.
1) testfile:
2004 Mar 26
1
Mahalanobis
Dear all
Why isn'it possible to calculate Mahalanobis distances with R for a matrix
with 1 row (observations) more than the number of columns (variables)?
> mydata <- matrix(runif(12,-5,5), 4, 3)
> mahalanobis(x=mydata, center=apply(mydata,2,mean), cov=var(mydata))
[1] 2.25 2.25 2.25 2.25
> mydata <- matrix(runif(420,-5,5), 21, 20)
> mahalanobis(x=mydata,
2011 Sep 10
0
npreg: plotting out of sample, extremely large bandwidths
Hello r-help,
I am using the excellent np package to conduct a nonparametric kernel
regression and am having some trouble plotting the results.
I have 2 covariates, x1 and x2, and a continuous outcome variable y. I
am conducting a nonparametric regression of y on x1 and x2. The one
somewhat unusual feature of these data is that, to be included in the
dataset, x1 must be at least as large as x2.
2008 May 16
1
xyplot: subscripts, groups and subset
I have stumbled across something in the Lattice package that is vexing me.
Consider the code below:
__________________________________________________________
library(lattice)
myData <- expand.grid(sub = factor(1:16), time = 1:10)
myData$observed <- rnorm(nrow(myData))
myData$fitted <- with(myData, ave(observed, sub, FUN = mean))
myData$event.time <- with(myData, ave(observed, sub,
2009 Sep 04
2
lrm in Design package--missing value where TRUE/FALSE needed
Hi,
A error message arose while I was trying to fit a ordinal model with lrm() I am using R 2.8 with Design package.
Here is a small set of mydata:
RC RS Sex CovA CovB CovC CovD CovE
2 1 0 1 1 0 -0.005575280 2
2 1 0 1 0 1 -0.001959580 2
3 0 0 0 1 0 -0.004725880 2
0 0 0 1 0 0 -0.005504850 2
2 1 1 0 0 0 -0.003880170 1
2 1 0 0 1 0 -0.006074230 2
2 1 0 0 1 1 -0.003963920 2
2 1 0 0 1 0