Displaying 20 results from an estimated 800 matches similar to: "Wilcoxon test on data matrix"
2008 Jul 09
2
replacing value in column of data frame
Dear all,
Probably a very basic question but I need some help.
I have a data frame (made by read.table from a text file) of microarray data, of which the first column is a factor and the rest of the columns are numeric.
The factor column contains chromosome names, so values 1 through 22 plus X, Y and XY. The numeric columns contain positions or intensity measurements.
What I need to do is
2005 Sep 23
1
Installing local packages in R for MacOSX 10.4.2
Dear all,
I have been using R for Windows before but recently switched to Mac. Now I
am confused about how to install local packages using R 2.1.1. on the Mac.
I found the menu Packages and Data, and have used it succesfully to install
CRAN and Bioconductor packages (all binaries) by selecting these
repositories from the pull-down menu and clicking the Get List button.
However there is one
2009 Feb 21
0
errors
Dear Sir/Madam,
I was trying to upload my data in BRB array tools (R version 2.8.0). The following errors occured:
Error: package/namespace load failed for 'affy'
Error occured while executing the following R command: try(library(affy)).
Could you please tell me what this means (and how to solve)?
Thank you in advance,
Henk-Marijn de Jonge
De inhoud van dit bericht is
2012 Mar 15
1
substituting own test statistics in a built-in function
Hi All
I would like to compute the raw p-value from permutation tests and I found
mt.sample.rawp() from the package multtest almost similar to what I want to
do. But in the function definition:
mt.sample.rawp(V,classlabel,test="t",side="abs",fixed.seed.sampling="y",B=10000,na=.mt.naNUM,nonpara="n")
I would like to choose my own t-test which is designed
2010 Mar 03
1
Help with multtest (rawp2adjp)
Hello R experts,
I am trying to analyze this dataset and am stuck on this problem for quite
some time now.
I am using mt.rawp2adjp.
the output that came out was a matrix with two colums since I had asked it
to calculate the adjusted p values using one method.
so it has the two columns as: rawp BH
I combined these using cbind with my actual dataframe.
checked using head all was fine.
thereafter I
2008 Jun 17
1
samba ldap squid dansgardian
Hi,
Just a question.
I have a samba PDC with LDAP backend.
I want squid / dansguardian use the user auth from samba
NTLM bases.
i need user and group filtering and i want it transparent.
2 steps, auth,
first the NTLM auth on port 80 to be transparent.
second, the dansgadian filter filtering groups.
this looks bit like it, but this authenicates against ADS.
2018 Apr 19
0
Question
Hi,
I think he's talking about how much a statistical estimator is influenced by extreme datapoints, e.g.
https://en.m.wikipedia.org/wiki/Robust_statistics#Breakdown_point
Olivier
--
Olivier Crouzet
Assistant Professor
@LLING UMR6310 - Universit? de Nantes / CNRS
Guest Scientist
@UMCG - University Medical Center Groningen / RijksUniversiteit Groningen
> Le 19 avr. 2018 ? 11:00,
2017 Oct 31
0
Scatterplot3d :: Rotating x tick labels by x degrees
Hi Alex,
this should be related to the "las" argument of "par()" but
actually it does not seem to be parametered in scatterplot3d.
Searching the net for "scatterplot3d las" provides a link to:
https://stackoverflow.com/questions/25458652/specifying-the-orientation-of-the-axes-labels-in-scatterplot3d
You may try the solution that is provided in this link or consider
2013 Mar 28
2
[Bridge] [PATCH v2] net: add ETH_P_802_3_MIN
Add a new constant ETH_P_802_3_MIN, the minimum ethernet type for
an 802.3 frame. Frames with a lower value in the ethernet type field
are Ethernet II.
Also update all the users of this value that David Miller and
I could find to use the new constant.
Also correct a bug in util.c. The comparison with ETH_P_802_3_MIN
should be >= not >.
As suggested by Jesse Gross.
Compile tested only.
2017 Oct 31
1
Scatterplot3d :: Rotating x tick labels by x degrees
> On Oct 31, 2017, at 8:55 AM, Olivier Crouzet <olivier.crouzet at univ-nantes.fr> wrote:
>
> Hi Alex,
>
> this should be related to the "las" argument of "par()" but
> actually it does not seem to be parametered in scatterplot3d.
> Searching the net for "scatterplot3d las" provides a link to:
>
>
2008 Jun 23
1
samba ADS and ms licenses
Hi,
a quick question.
Im running samba, but i want to use ads for auth.
I have 1 windows 2000 ( or 2003 ) available, but without extra licences (
just the default 5 users )
in my current enviroment im having about 70 users.
now my question.
I want to install the windows 2000 or 2003 and use only the ADS
install my samba, connect it with the ads of windows.
Now its al about, my
2008 Mar 01
2
Newbie: Incorrect number of dimensions
> dim(data.sub)
[1] 10000 140
#####extracting all differentially express genes##########
library(multtest)
two_side<- (1-pt(abs(data.sub),50))*2
diff<- mt.rawp2adjp(two_side)
all_differ<-diff[[1]][37211:10000,]
all_differ
#####list of differentially expressed genes##########
> probe.names<-
+ all_differ[[2]][all_differ[[1]][,"BY"]<=0.01]
Error in
2009 Feb 02
1
wilcoxon test with bonferroni correction
Hi!
I need to run a wilcoxon (Mann-whitly, in fact) test with bonferroni
correction, as I am running 10 consecutive wilcoxon test not
independent, and I know that bonferroni will partially correct for
this problem, but I have no idea how to do it with R, I have been
looking in the archive but couldn't understand how to do it.
The format I am using at the moment is
r4_o <-
[1]
2005 Nov 23
2
wilcoxon.test?
Hello there,
I would like to do a Wilcoxon matched pairs signed rank sum test in R
and tried the function wilcoxon.test. Is it in the "base" library? If
not, please let me know which library it is in.
Thank you in advance for your help
Lisa Wang
Biostatistician
Princess Margaret Hospital
Toronto, Ca
2011 Oct 31
2
one sample Wilcoxon test using 'coin'
Hi,
R allows me to run a one sample Wilcoxon test like this:
wilcox.test(c(1,3.5,2.1,4,1.5,5), mu=2, exact=TRUE)
The function 'wilcoxsign_test' from the package 'coin' should (I
suppose) be able to calculate exact p values even if there are ties in
the ranks. However, I couldn't find information on how to run a one
sample test using 'wilcoxsign_test' like in the
2011 Apr 13
2
Wilcoxon rank sum in unbalanced design
Hi everyone!
I need to perform a Wilcoxon rank sum test, but I have some ties and the
groups have different size also. When I deal with ties I use the
wilcox.exact function, how can I solve the different size problem using this
function?
thanks
net
--
View this message in context: http://r.789695.n4.nabble.com/Wilcoxon-rank-sum-in-unbalanced-design-tp3447400p3447400.html
Sent from the R help
2012 Nov 25
2
Finding the Degrees of Freedom in a Wilcoxon Test
Dear R-ers,
I am currently running some Wilcoxon tests in R-64.
How do I find the degrees of freedom in the output I am receiving?
> wilcox.test(good$TRUE, good$x4a, paired=FALSE)
Wilcoxon rank sum test with continuity correction
data: good$TRUE and good$x4a
W = 2455, p-value < 2.2e-16
alternative hypothesis: true location shift is not equal to 0
Thank you,
Stephen.
2012 Sep 19
1
Wilcoxon Test and Mean Ratios
Hello All,
I am writing to ask your opinion on how to interpret this case. I have two vectors "a" and "b" that I am trying to compare.
The wilcoxon test is giving me a pvalue of 5.139217e-303 of a over b with the alternative "greater". Now if I make a summary on each of them I have the following
> summary(a)
Min. 1st Qu. Median Mean 3rd Qu.
2005 Jan 22
1
Wilcoxon test for mixed design (between-within subjects)
Hallo,
is there any extension of the pairwise Wilcoxon test to a dependent
samples layout with replicates (or, in other terms, a one-way layout
with blocking and replicates)?
The Wilcoxon method with matched pairs works for the case of dependent
samples with one observation per block, while the Mann-Whitney test
works for independent samples, thus one single block and replicated
observations. Is
2011 Sep 15
1
How to compute the power of a wilcoxon test?
Hello All,
I posted a similar question before, but the direction was driven to whether
my case is suitable for a wilcoxon test. After research about the
appropriateness, I am pretty sure that a wilcoxon test is the right tool for
my case. But how to compute the power of the test is still an unanswered
question bothering me.
The basic stats of my two paired samples are:
mean1 = 0.0032, sd1 =