Displaying 20 results from an estimated 3000 matches similar to: "64bit R for Mac"
2008 Nov 19
2
Transforming a list to a vector with associated levels
I am pretty sure that I came across a function that creates a vector of levels from a list but I just can't remember.
Basically, I have something like
> t <- list(A=c(4,1,4),B=c(3,7,9,2))
> t
$A
[1] 4 1 4
$B
[1] 3 7 9 2
And I would like to get something like the following:
t levels
4 1
1 1
4 1
3 2
7 2
9 2
2 2
I tried unlist without success. I also do remember that there is a
2008 Nov 30
2
Snow and multi-processing
Dear R gurus,
I have a very embarrassingly parallelizable job that I am trying to speed up with snow on our local cluster. Basically, I am doing ~50,000 t.test for a series of micro-array experiments, one gene at a time. Thus, I can easily spread the load across multiple processors and nodes.
So, I have a master list object that tells me what rows to pick up for each genes to do the t.test from
2009 Mar 22
2
Following progress in a lapply() function
Dear all,
I am processing a very long and complicated list using lapply through a custom function and I would like to generate some sort of progress report. For instance, print a dot on the screen every time 1000 item have been process. Or even better, reporting the percent of the list that have been process every 10%. However, I can't seem to figure out a way to achieve that.
For instance,
2008 Nov 21
1
Suppression anova message
Dear all,
I am running anova(lm()) on a series of different data frame and I am getting the following message
Using dataFrame$levels as id variables
1. Why am I getting that message
2. How do I suppress it (or correct it).
Thanks
Marco
--
Marco Blanchette, Ph.D.
Assistant Investigator
Stowers Institute for Medical Research
1000 East 50th St.
Kansas City, MO 64110
Tel: 816-926-4071
2008 Dec 02
2
command files
Since I'm a SAS programmer, I'm used to creating command files in an editor for submission later. Is there a way to do this in R? I'd need to retain an ouput listing and a log to check for errors.
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2009 Mar 17
3
Combining columns from two dataframes
I all
I am trying to combine columns from two dataframes to make a completely
new dataframe consisting of one column of dates (ie a combination of
dates from the two dataframes).
>From the following dataframes
a b
1 2008-07-27 1
2 2008-10-01 2
3 2008-08-15 3
4 2008-08-14 4
5 2008-08-14 5
6 2008-09-20 6
c d
1 2008-07-27 1
2 2008-10-01 2
I would like to get:
z
2006 Nov 29
4
rm() deletes 'c' if c('a','b') is the argument (PR#9399)
Full_Name: Lixin Han
Version: 2.4.0
OS: Windows 2000
Submission from: (NULL) (155.94.110.222)
A character vector c('a','b') is supplied to rm(). As a result, 'c' is deleted
unintentionally.
> a <- 1:5
> b <- 'abc'
> c <- letters
> ls()
[1] "a" "b" "c"
> rm(c('a','b'))
> ls()
character(0)
2007 Nov 23
4
help pleaseeeeeeeee
Dears Sirs
During my computational work I encountered unexpected behavior when calling
"ar" function, namely
# time series
x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-
1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3))
# ar function
res.ar<-ar(x,aic=TRUE,demean=F)
# call "ar" again and ............
2006 Jul 20
3
How do I modify an exported function in a locked environment?
Running R.app on Mac OS X 10.4
> version
_
platform powerpc-apple-darwin8.6.0
arch powerpc
os darwin8.6.0
system powerpc, darwin8.6.0
status
major 2
minor 3.1
year 2006
2006 Jul 20
3
How do I modify an exported function in a locked environment?
Running R.app on Mac OS X 10.4
> version
_
platform powerpc-apple-darwin8.6.0
arch powerpc
os darwin8.6.0
system powerpc, darwin8.6.0
status
major 2
minor 3.1
year 2006
2009 Jan 20
5
Problem with subset() function?
Hi all,
Can anyone explain why the following use of
the subset() function produces a different
outcome than the use of the "[" extractor?
The subset() function as used in
density(subset(mydf, ht >= 150.0 & wt <= 150.0, select = c(age)))
appears to me from documentation to be equivalent to
density(mydf[mydf$ht >= 150.0 & mydf$wt <= 150.0, "age"])
2007 Aug 03
4
FW: Selecting undefined column of a data frame (was [BioC] read.phenoData vs read.AnnotatedDataFrame)
Hi all,
What are current methods people use in R to identify
mis-spelled column names when selecting columns
from a data frame?
Alice Johnson recently tackled this issue
(see [BioC] posting below).
Due to a mis-spelled column name ("FileName"
instead of "Filename") which produced no warning,
Alice spent a fair amount of time tracking down
this bug. With my fumbling fingers
2009 Aug 11
3
loadings function (PR#13886)
Full_Name: Mike Ulrich
Version: 2.9
OS: Mac OSX
Submission from: (NULL) (69.169.178.34)
The help documentation for loadings() lists more then one parameter. The
function call only expects one parameter. The digits, cutoff, and sort
parameters are not used in the function.
## S3 method for class 'loadings':
print(x, digits = 3, cutoff = 0.1, sort = FALSE, ...)
## S3 method for class
2009 Apr 29
1
Corrupt data frame construction - bug?
Hi useRs,
A recent coding infelicity along these lines
yielded a corrupt data frame.
foo <- matrix(1:12, nrow = 3)
bar <- data.frame(foo)
bar$NewCol <- foo[foo[, 1] == 4, 4]
bar
lapply(bar, length)
> foo <- matrix(1:12, nrow = 3)
> bar <- data.frame(foo)
> bar$NewCol <- foo[foo[, 1] == 4, 4]
> bar
X1 X2 X3 X4 NewCol
1 1 4 7 10 <NA>
2 2 5 8 11
2009 Jan 14
2
coercing a list into matrix
Dear list,
I have a list of number sequences. Each number sequence has different
numbers of elements. Is there a quick way (other than to iterate
through the entire list) way to coerce list to matrix with NAs filling
in the short sequences?
An example of what I mean is this:
A <- list(c(3,2,3),c(6,5))
I'd like to get A so that it is
3 2 3
6 5 NA
Best,
Ken
2009 Jan 22
2
Is it possible for R to import a SigmaPlot file?
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 good hits. Thank for any feedback and insight you can provide.
P.S. Love the flexibility of R and would love to keep using it. Just wanting to know if this is
2009 Mar 18
2
How do I set the Windows temporary directory in R?
I'm trying to redirect where temporary files go under R to
D:\temp\somerandomname from its default (C:\Documents and
Settings\username\Temp\somerandomname) -- how do I go about doing this?
--j
--
Jonathan A. Greenberg, PhD
Postdoctoral Scholar
Center for Spatial Technologies and Remote Sensing (CSTARS)
University of California, Davis
One Shields Avenue
The Barn, Room 250N
Davis, CA 95616
2007 Mar 09
1
dendrogram - got it , just need to label :)
Hi all, Hi Gavin,
thx for your help i finally found out what i want to do and how to
fix it.
just needed to get some more level my cut level was too small...
two question remain...
a) can i somehow scale the twigs after cutting ?
b) how can i label the nodes and how to label which one...
thx !!
-m.
2008 Nov 21
1
Dataframe with single level column
Dear all,
I have a dataframe with multiple observations and the levels as the last column, as in:
d <- data.frame(A=sample(1:100,12),B=sample(1:100,12),levels=c(rep('A',4),rep('B',4),rep('C',4)))
> d
A B levels
1 77 40 A
2 14 18 A
3 56 7 A
4 46 27 A
5 63 35 B
6 80 21 B
7 3 54 B
8 93 76 B
9 5 46 C
10 16 53
2008 Nov 28
2
AIC function and Step function
I would like to figure out the equations for calculating "AIC" in both
"step() function" and "AIC () function". They are different. Then I
just type "step" in the R console, and found the "AIC" used in "step()
function" is "extractAIC". I went to the R help, and found:
"The criterion used is
AIC = - 2*log L + k *