Displaying 20 results from an estimated 600 matches similar to: "SVM? Comparison method wanted: 3 Groups, Microarray data"
2005 Oct 25
1
how to increase the font size of axis data
Hello R Users,
I am a new user to R.
When we make a simple plot then how to
increase the font size of the data at the
each axis.
Many thanks,
Kind regards,
Yogesh
--
===========================================
Yogesh Tiwari,
Max-Planck Institute for Biogeochemistry,
Hans-Knoell Strasse 10,
D-07745 Jena,
Germany
Office : 0049 3641 576 376
Home : 0049 3641 223 163
Fax : 0049 3641
2007 Nov 02
0
loading installes package including all needed subpackages
Hallo,
I just installed all needed packages for my project on my PC. But I cannot load all at one time. I now want to load limma. How can I realize the following plan: I want to install for example limma inclusive all needed other sub packages (add-on). Can anyone tell me the corresponding command?
Thanks, Corinna
Here is the result of the command library():
Pakete in Library
2005 Apr 01
3
plot axis appearance problem
Hello,
When I plot any data with simple plot command in
R, for example :-
plot(time,co2,ylim=c(350,380),xlim=c(1993,2003),xlab=NA,ylab=NA,type="p",col=5)
Then the first value of x-axis(350) and
y-axis(1993) never starts from origin, always they
sifted from the origin. Is there any command that
I can correct this in the ploted figure and both
the axis values start from origin.
1997 Aug 21
1
hosts allow - problem
Hello,
I have red the E-mail from Christophe Dumont from 17 Mar 1997We have a
similar problem. In our smb.conf we have the entries:
[global]
hosts allow = 193.174.234., 192.124.248., 193.174.235., 141.35.191.122
workgroup = IMBNET
printing = SYSV
printcap name = /etc/printcap
load printers = yes
passwd program = /usr/bin/yppasswd
share modes = yes
browseable = yes
....
2005 Jan 14
1
how to produce 2-d color plots in R
Hello 'R' Users,
I am very new on 'R', so excuse me if I ask something wrong.
I have ASCII data and the colums of the data are looks like :-
!-------------------------
time,yr,mo,dy,hr,min,sec,lat,lon,ht,co2obs,sigma,co2model
--
-
--
!----------------------------
Each column has data value. Now I want to produce 2-d color maps,
for example the plot should look like :-
on
2006 Apr 27
0
package pamr: pamr.adaptthresh() error rates
Hi, I was working on a classification problem using the pamr package. I used the pamr.adaptthresh() function to find the optimal accuracy of the classifier. I must not be doing it right, since it doesn't return the threshold values for optimum classification. For example,if I run it on a dataset, I get the following result using pamr.adaptthresh(): predicted true
2006 Apr 27
0
pamr package: pamr.adaptthresh() error rates
Hi,
I was working on a classification problem using the pamr package. I used the pamr.adaptthresh() function to find the optimal accuracy of the classifier. I must not be doing it right, since it doesn't return the threshold values for optimum classification.
For example,if I run it on a dataset, I get the following result using pamr.adaptthresh():
predicted
true (1)
2006 Apr 27
0
package pamr: pamr.adapthresh() ---- Take 2!
Hi,
Sorry about the earlier formatting errors...
I was working on a classification problem using the pamr package. I used the pamr.adaptthresh() function to find the optimal accuracy of the classifier. I must not be doing it right, since it doesn't return the threshold values for optimum classification.
For example,if I run it on a dataset, I get the following result using
2006 Apr 27
1
scope of variable/object ?
Hi,
I must be missing something here...Essentially, a short piece of code works if it's standalone, but doesn't work if it's divided into two functions.
The code that works is:
################### WORKS ###############
library(pamr)
set.seed(120)
x <- matrix(rnorm(1000*20),ncol=20)
y <- sample(c(1:4),size=20,replace=TRUE)
mydata <- list(x=x,y=y)
2008 Apr 01
0
PAMR package question: How to plot Estimated probabilities for the training data and test data
Hi,
I have tried some time trying to figure out how to use pamr to plot multiclass
Estimated probabilities for the training data and test data?
Specifically, how to recreate the PAMR publication on PNAS with
Tibshrani et al. The publication is as attached. The plot I want to
do is Figure 5.
I have downloaded the pamr package and the function which gives
similar plot is pamr.plotcvprob
2010 Jan 29
1
combine 3 affybatches
Hello,
Im trying to combine 3 affybatches (1x hgu133+2 array and 2x hgu133a array)
Im useing this script:
library(matchprobes)
library(affy)
library(AnnotationDbi)
library(hgu133plus2probe)
library(hgu133aprobe)
library(hgu133a.db)
u133p2 = ReadAffy() # reading hgu133 +2 cel file into affybatch
u133a1 = ReadAffy() # reading hgu133a cel file into affybatch
u133a2 = ReadAffy() # reading hgu133a
2015 Jan 26
2
Inspect a "delayed" assigned whose value throws an error?
On Mon, Jan 26, 2015 at 12:24 PM, Hadley Wickham <h.wickham at gmail.com> wrote:
> If it was any other environment than the global, you could use substitute:
>
> e <- new.env()
> delayedAssign("foo", stop("Hey!"), assign.env = e)
> substitute(foo, e)
>
> delayedAssign("foo", stop("Hey!"))
> substitute(foo)
Hmm... interesting
2005 Jun 01
0
determine the shrinkage threshold in PAMR?
1. According to the doc of PAMR, the shrinkage
threshold is determined by cross-validation. Does this
mean that user need not tune any parameter?
2. I tried two applications using PAMR, the results
are very disappointing. The attached are the
cross-validation results. You can see that the
classification errors are relatively high (0.2 at the
best), in the case of two categories classification,
2015 Jan 26
2
Inspect a "delayed" assigned whose value throws an error?
Hi, I got an interesting programming challenge:
How do you inspect an object which is assigned via delayedAssign() and
that throws an error as soon as it is "touched" (=the value is
evaluated)? Is it possible?
MINIMAL EXAMPLE:
$ R --vanilla
> delayedAssign("foo", stop("Hey!"))
(If you find this minimal example silly/obvious, please skip down to
the real
2015 Jan 26
0
Inspect a "delayed" assigned whose value throws an error?
If it was any other environment than the global, you could use substitute:
e <- new.env()
delayedAssign("foo", stop("Hey!"), assign.env = e)
substitute(foo, e)
delayedAssign("foo", stop("Hey!"))
substitute(foo)
Hadley
On Mon, Jan 26, 2015 at 12:53 PM, Henrik Bengtsson <hb at biostat.ucsf.edu> wrote:
> Hi, I got an interesting programming
Looking for new maintainer of orphans R2HTML SemiPar cghseg hexbin lgtdl monreg muhaz operators pamr
2014 Aug 08
2
Looking for new maintainer of orphans R2HTML SemiPar cghseg hexbin lgtdl monreg muhaz operators pamr
Dear maintainers and R-devel,
Several orphaned CRAN packages are about to be archived due to
outstanding QC problems, but have CRAN and BioC packages depending on
them which would be broken by the archival (and hence need archiving
alongside).
Therefore we are looking for new maintainers taking over maintainership
for one or more of the following packages:
R2HTML SemiPar cghseg hexbin lgtdl
2014 Oct 07
1
S4 Method Dispatch for Class Defined as Attribute
Hello,
I am writing an interface to some functions from the CRAN package pamr, which is poorly written.
I have a S4 method I declared with setMethod. I'd like to provide a signature of "pamrtrained" which is the class of object that training creates. The last two lines of code of pamr.train are :
class(junk) = "pamrtrained"
junk
How can I dispatch on these kinds
2007 Aug 06
1
Problems with expresso
Hello,
I want to use expresso for preprocessing the hgu133a-spikein data from
affycompII. But there is an error:
> library(affy)
> path <- "z:/Microarray/hgu133a-spikein/rawdata"
> celFile <- list.celfiles(path=path,full.names=TRUE);
> affyBatch <- ReadAffy(filenames=celFile[1:6]);
> eset1 <-
2012 Nov 19
2
Classification methods - which one?
Dear all,
i searched for some classification methods and I have no glue if i took the right once.
My problem: I have a matrix with 17000 rows and 33 colums (genes and patients). The patients are grouped into 3 diseases.
No I want to classify the patients and for sure i want to know which rows are more helpful for the classification than others.
I tried SVM and random forest. Do you think this
2007 Jun 25
3
a string to enviroment or function
Hi,
I am wondering how to make a function Fun to make the following work:
t0 <- (paste("hgu133a", "ENTREZID", sep=""))
xx <- as.list(Fun(t0)) # make it work like xx<-as.list(hgu133aENTREZID)
thanks,
--
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.
"Did you always know?"
"No, I did not. But I believed..."
---Matrix III