Displaying 20 results from an estimated 10000 matches similar to: "qvalue"
2006 Oct 02
1
qvalue
Dear colleagues,
This is not strictly a R question, but I hope it is ok to ask on the
list.
I fed a vector of p-values from about 20 million anova tests to the
package q-value and obtained this output:
> qsummary(asso_p.qvalue)
Call:
qvalue(p = asso_p.vec)
pi0: 1
Cumulative number of significant calls:
<1e-04 <0.001 <0.01 <0.025 <0.05 <0.1 <1
2011 Apr 19
1
How to get the tuning parameter lamda in storey's qvalue package
Dear All,
In Storey's estimator of the proportion of true nulls, the estimator depends on the tuning parameter lamda.
Suppose now that an estimator of this proportion has been obtained by the qvalue package, what is the lamda that
corresponds to the estimate? How to get this lamda?
Thanks,
-Chee
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2003 Dec 30
1
floor of n observations in number generators
I couldnt find a previous posting on this in the archives, maybe it has
already been mentioned.
If you use a calculation to generate n observations in random number
generators and you don't round to the nearest integer you may be
generating n-1 numbers not n numbers as you thought depending on the
storage precision of the calculation.
e.g.
> m <- 1000
> pi0 <- 0.9
>
2018 Jul 10
1
Updating qvalue and xtable
Good Morning Everyone,
I was going through my list of FTBFS packages today and I fixed all my R
packages but 2: qvalue and xtable.
qvalue requires ggplot2
xtable requires: lsmeans, spdep, splm, sphet, plm
I am not doing any R anymore these days and in fact spot has been the one
maintaining most of my R packages these days (thanks spot!!), so I am not really
interested in maintaining more R
2004 Dec 20
1
Re: [BioC] limma, FDR, and p.adjust
Mark,
there is a fdr website link via Yoav Benjamini's homepage which is: http://www.math.tau.ac.il/%7Eroee/index.htm
On it you can download an S-Plus function (under the downloads link) which calculates the false discovery rate threshold alpha level using stepup, stepdown, dependence methods etc.
Some changes are required to the plotting code when porting it to R. I removed the
2007 Sep 20
1
packages MANOR, qvalue, and tkWidgets fail install on Fedora 7 with latest R-beta build
Had some packages fail install so I updated to today's R-beta release.
On updating packages the following packages still fail. sessionInfo
follows. Mark
Warning messages:
1: In install.packages(update[instlib == l, "Package"], l, contriburl =
contriburl, :
installation of package 'MANOR' had non-zero exit status
2: In install.packages(update[instlib == l,
2009 Sep 15
0
trouble installing qvalue package
Hello all,
I'm trying to use the package qvalue. Upon trying to install it I'm running
into trouble. I re-downloaded and installed the most recent CRAN
distribution of R which announced itself to have tcltk included. Now when I
try to load qvalue I'm getting errors that seem to indicate that I need
tcltk2. I tried going to get that package and loading it but both qvalue and
tcltk seem
2004 Dec 20
1
[BioC] limma, FDR, and p.adjust
You asked the same question on the Bioconductor mailing list back in August. At that time, you
suggested yourself a solution for how the adjusted p-values should be interpreted. I answered
your query and told you that your interpretation was correct. So I'm not sure what more can be
said, except that you should read the article Wright (1992), which is cited in the help entry for
p.adjust(),
2012 Apr 24
2
Some Help Needed
Dear all,
I need to do some calculation where the code used are below. I get
error message when I choose k to be large, say greater than 25.
The error message is
"Error in integrate(temp, lower = 0, upper = 1, k, x, rho, m) :
the integral is probably divergent".
Can anyone give some help on resolving this. Thanks.
Hannah
m <- 100
alpha <- 0.05
rho <- 0.1
F0
2018 Apr 04
1
parfm unable to fit models when hazard rate is small
Hello, I would like to use the parfm package: https://cran.r-project.org/web/packages/parfm/parfm.pdfhttps://cran.r-project.org/web/packages/parfm/parfm.pdf in my work. This package fits parametric frailty models to survival data. To ensure I was using it properly, I started by running some small simulations to generate some survival data (without any random effects), and analyse the data using
2006 Sep 07
1
Memory allocation
Dear list,
I have been trying to run the function "qvalue" under the package qvalue
on a vector with about 20 million values.
> asso_p.qvalue<-qvalue(asso_p.vector)
Error: cannot allocate vector of size 156513 Kb
> sessionInfo()
Version 2.3.1 (2006-06-01)
i686-pc-linux-gnu
attached base packages:
[1] "methods" "stats" "graphics"
2011 Oct 28
1
Downloading Error
Hi,
I am trying to install qvalue, however its giving installation error ->
Error : package 'tcltk' does not have a name space
ERROR: lazy loading failed for package ?qvalue?
* removing ?/home/sbw/R/x86_64-unknown-linux-gnu-library/2.12/qvalue?
The downloaded packages are in
?/tmp/RtmpKnS1X4/downloaded_packages?
Warning message:
In install.packages(pkgs = pkgs, repos = repos, ...)
2010 Aug 28
1
Calculating p and q values with R
Hi,
I have a huge dataset (53 million records). I have to calculate the p and q
values of my data. How can I do it in R or perl? I have downloaded R (I'm
completely new to R). and the package qvalue but I don't understand how can
I call/use qvalue package with R. When I type library(qvalue), it gives me
an error that this package doesn't exist. What should I do?
Thanks!
--
View this
2010 Oct 30
2
'tcltk' does not have a name space
Hi, All
I got trouble on installing the qvalue package. Error message: package
'tcltk' does not have a name space
[cchen1 at ibibmem Yale_CB]$ R CMD INSTALL qvalue.tar.gz
* installing to library '/cchome/cchen1/R/x86_64-unknown-linux-gnu-library/2.10'
* installing *source* package 'qvalue' ...
** R
** data
** inst
** preparing package for lazy loading
Error : package
2010 Feb 11
1
histogam plots
Hi all,
I want to draw a histgram for each row of a matrix and compare them.
However the plot I
got does not have the same y range and x range, which makes it difficult to
make the comparison.
Is there a easy way to fix the x range and y range in a xy plot for several
plots, instead of specifying
them for each plot.
The following is my code for generalizing the matrix and draw the
histogram.
2004 Jun 25
2
Matrix: Help with syntax and comparison with SparseM
Hi,
I am writing some basic smoothers in R for cleaning some spectral data.
I wanted to see if I could get close to matlab for speed, so I was
trying to compare SparseM
with Matrix to see which could do the choleski decomposition the
fastest.
Here is the function using SparseM
difsm <- function(y, lambda, d){
# Smoothing with a finite difference penalty
# y: signal to be smoothed
#
2011 Apr 12
1
2-parameter MLE problems
Hi all,
Sorry for the re-post, I sent my previous e-mail before it was complete. I
am trying to model seroprevalence using the differential equation: dP/dt =
beta*seronegative*.001*(seropositive)-0.35*(0.999)*(seropositive)-r*seropositive.
I would like to estimate my two parameters, beta and r, using maximum
likelihood methods. I have included my code below:
2007 May 24
3
Problem with numerical integration and optimization with BFGS
Hi R users,
I have a couple of questions about some problems that I am facing with
regard to numerical integration and optimization of likelihood
functions. Let me provide a little background information: I am trying
to do maximum likelihood estimation of an econometric model that I have
developed recently. I estimate the parameters of the model using the
monthly US unemployment rate series
2006 Jul 20
1
Loss of numerical precision from conversion to list ?
I?m working on an R-implementation of the simulation-based finite-sample null-distribution of (R)LR-Test in Mixed Models (i.e. testing for Var(RandomEffect)=0) derived by C. M. Crainiceanu and D. Ruppert.
I'm in the beginning stages of this project and while comparing quick and dirty grid-search-methods and more exact optim()/optimize()-based methods to find the maximum of a part of the
2011 Mar 16
2
Re; Fitting a Beta distribution
I want to fit some p-values to a beta distribution. But the problem is some
of the values have 0s and 1's. I am getting an error if I use the MASS
function to do this. Is there anyway to get around this?
--
Thanks,
Jim.
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