Displaying 20 results from an estimated 200 matches similar to: "problems in limma"
2009 May 06
1
'RG' looks like a pre-2.4.0 S4 object: please recreate it
I would like to load ApoAI.RData. During the operation of reading this
data an error occurs. There is also a problem with STF file.
> library (limma)
> load("ApoAI.RData")
Warning message:
'RG' looks like a pre-2.4.0 S4 object: please recreate it
> objects()
[1] "RG"
> names(RG)
[1] "R" "G" "Rb"
2009 Jun 18
2
Any method to speed up this problem?
Hi all,
Suppose I have a vector like this:
[1] "STAT1" "STAT1" "STAT1" "STAT1" "GAPDH" "GAPDH" "GAPDH" "ACTB"
"ACTB"
[10] "ACTB" "DDR1" "RFC2" "HSPA6" "PAX8" "GUCA1A" "UBE1L" "THRA"
"PTPN21"
[19]
2008 Jun 23
2
Writing Vector to a File
Dear experts,
I try not to trouble the list again after this question.
I want to print this vector into a file
> myvec
[1] --Control --Control --Control --Control --Control HBA2 HBA1
[8] HBA1 --Control HBB --Control HBB HBA1 MBP
[15] --Control HBA1 HBA2 HBB PTGDS GAPDH UBC
[22] --Control GAPDH TPT1 HUWE1 PRM1 CKM
2008 Mar 13
0
LIMMA: array spot summary options beyond duplicateCorrelation()
Hello Limma users
A quick question, I hope:
I have dual-channel spotted expression arrays in a simple loop design
(no dye swaps), viz:
1 vs reference
2 vs 1
3 vs 2
reference vs 3
There are 4 replicate spots for each probe on each array.
It seems as if getting meaningful spot summary results using
duplicateCorrelation() is not possible in my case as the spots are not
regularly spaced, and I
2006 Apr 23
1
Comparing GLMMs and GLMs with quasi-binomial errors?
Dear All,
I am analysing a dataset on levels of herbivory in seedlings in an
experimental setup in a rainforest.
I have seven classes/categories of seedling damage/herbivory that I want to
analyse, modelling each separately.
There are twenty maternal trees, with eight groups of seedlings around each.
Each tree has a TreeID, which I use as the random effect (blocking factor).
There are two
2004 Mar 17
0
NLS question:Quadratic plus plateau fit
Dear R colleagues:
Am trying to fit a simple NL model to determine Economical Optimum Nitrogen
Rates.
The segmented (quadratic + plateau) model only works with some y's, in some
cases I get a "singular gradient" error.
I'll appreciate any ideas in how to solve the singular gradient error.
Thanks,
Jose
# The following code works using yield2 in the nls model but not using
2012 Jun 01
1
Finding multiple breakpoints - 'segmented' ?
Hello,
I'm attempting to find multiple breakpoints in an association of my
response variable (R.AUC) with two explanatory variables ('s.size' and
'bedekking'). The association between 's.size' and 'R.AUC' shows a
plateau, but the value when this plateau is reached is differs for
different values of 'bedekking'.
Initially I thought these different
2008 May 19
0
Updated package adimpro
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
This package implements tools for manipulationg digital images and the
Propagation Separation approach for smoothing digital images.
Version 0.6.1 is a major update with many new features:
Input/Output:
- - we now keep exif information as comment of an image
~ this information is evaluated to recover the original adimpro-object
~ used to produce
2008 May 19
0
Updated package adimpro
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
This package implements tools for manipulationg digital images and the
Propagation Separation approach for smoothing digital images.
Version 0.6.1 is a major update with many new features:
Input/Output:
- - we now keep exif information as comment of an image
~ this information is evaluated to recover the original adimpro-object
~ used to produce
2012 Aug 14
3
self-starter functions for y = a + b * c^x
Hi
there are some predefined self-start functions, like SSmicmen, SSbiexp,
SSasymp, SSasympOff, SSasympOrig, SSgompertz, SSflp, SSlogis, SSweibull,
Quadratic, Qubic, SSexp (nlrwr)
Btw, do you know graphic examples for this functions?
The SSexpDecay (exponential decay) for y = (y0 - plateau)*exp(-k*x) +
plateau from
2012 Apr 07
1
quadratic model with plateau
Dear All,
I would like to make a quadratic with a plateau model in R. Is there a
package in R doing this? The bentcableAR package seems won't work.
The link below describes what I am looking for in R exactly:
http://support.sas.com/documentation/cdl/en/statug/63033/HTML/default/viewer.htm#statug_nlin_sect033.htm
--
Thanks so much!
Orange
help.ly2005@gmail.com
[[alternative HTML version
2004 Nov 12
0
Design Matrix
Dear all,
I need some help on matrix design and B statistics by using limma package.
I want to compare gene expression in 2 groups of cDNA samples.
The experiment compares 4 treated mice(#1,#2,#3,#4) and 4 control mice
(#5,#6,#7,#8).
The target file is
FileName Cy3 Cy5
mice1.spot Control_#5 Treat_#1
mice2.spot Treat_#1 Control_#5
mice3.spot Control_#6 Treat_#2
2005 Jun 28
2
function for cumulative occurrence of elements
Hello,
I have a data set with 9700 records, and 7 parameters.
The data were collected for a survey of forest communities. Sample plots
(1009) and species (139) are included in this data set. I need to determine
how species are accumulated as new plots are considered. Basically, I want
to develop a species area curve.
I've included the first 20 records from the data set. Point
2008 Sep 02
2
Help with nonlinear regressional
Dear All,
I am doing experiments in live plant tissue using a laser confocal
microscope. The method is called "fluorescence recovery after
photo-bleaching" (FRAP) and here follows a short summary:
1. Record/ measure fluorescence intensity in a defined, round region of
interest (ROI, in this case a small spot) to determine the initial intensity
value before the bleaching. This
2010 Nov 21
3
R help
Dear All,
I'm a beginner user in R and I would like to make a quadratic and
plateau model in R. Can you help please with an example?
Thanks so much
--
Ahmed M. Attia
Assistant Lecturer
El-Khattara farm Station
Agronomy Dept.,
Zgazig Univ., Egypt
Visiting Scientist
Haskell Agricultural laboratory
Agronomy and Horticultural Dept.,
Univ. of Nebraska-Lincoln
ahmedatia at zu.edu.eg
Suggestions for improvement as regards `as` methods, and a call for consistency in `as.Date` methods
2016 Jan 27
0
Suggestions for improvement as regards `as` methods, and a call for consistency in `as.Date` methods
Good evening all,
This topic is gone into at a bit more length at my related Stack Overflow
question here:
http://stackoverflow.com/questions/34647674/why-do-as-methods-remove-vector-names-and-is-there-a-way-around-it
There are two lingering issues despite the abundant insight received at SO,
namely:
1) _Why_ do as methods remove their arguments' names attribute?
This is a fact which is
2009 Oct 01
1
set package: more information about syntax
Dear All!
I have a few question about proper syntax for fuzzy rules in sets
package (there is only little help about it):
1) how to use negation (NOT) operator there is only OR (||) in example
it is NOT, !!, !. I also assume that AND is &&
2) where it can be set. For example:
area %is NOT% large
area %is% NOT large
area %is% !large
etc...
3) how brackets works (as in typical logical
2007 Oct 01
3
optimize() stuck in local plateau ?
Hi all,
Consider the following function:
####
my.func = function(x){
y=ifelse(x>-.5,0,ifelse(x< -.8,abs(x)/2,abs(x)))
print(c(x,y)) #print what was tested and what the result is
return(y)
}
curve(my.func,from=-1,1)
####
When I attempt to find the maximum of this function, which should be
-.8, I find that optimize gets stuck in the plateau area and doesn't
bother testing the
2014 Mar 01
3
Icecast 2.4 beta5 release
This is to announce the release of Icecast 2.4 beta5 (aka 2.3.99.5).
We're looking forward to testing and feedback. As this is a beta release
please discuss it on the icecast-dev mailing list.
(Please do NOT cross-post to both lists, do NOT reply to the icecast
mailing list, PLEASE reply to icecast-dev at xiph.org only).
* Updated web interface to be fully XHTML compliant and mobile
2014 Mar 01
3
Icecast 2.4 beta5 release
This is to announce the release of Icecast 2.4 beta5 (aka 2.3.99.5).
We're looking forward to testing and feedback. As this is a beta release
please discuss it on the icecast-dev mailing list.
(Please do NOT cross-post to both lists, do NOT reply to the icecast
mailing list, PLEASE reply to icecast-dev at xiph.org only).
* Updated web interface to be fully XHTML compliant and mobile