Displaying 20 results from an estimated 100 matches similar to: "peak detection"
2010 Nov 24
2
Change the class of columns in a data frame
Hi.
First of all, excuse me if I do any mistakes, but English is not a language
I use very often.
I have a data frame with numbers. A small part of the data frame is this:
  nominal ordinal
       2       2
       2       1
       2       1
       2       2
So, I want to use the gower distance function on these numbers.
Here (
2011 Aug 08
1
msProcess, creating msSet file(s)
I have 120 MS chromatograms containing two columns'Time' and 'Peak height'.
how do in create a msSet file which is required by all the functions of
'msProcess' to process these files.
I would appreciate help very much.
Thanks
Sharad
--
View this message in context: http://r.789695.n4.nabble.com/msProcess-creating-msSet-file-s-tp3727959p3727959.html
Sent from the R help
2010 Aug 25
1
Documenting S4 Methods
I'm in the process of converting some S3 methods to S4 methods.
I have this function :
setGeneric("enrichmentCalc", function(rs, organism, seqLen, ...){standardGeneric("enrichmentCalc")})
setMethod("enrichmentCalc", c("GenomeDataList", "BSgenome"), function(rs, organism, seqLen, ...) {
         ...          ...             ...
})
2010 Dec 28
3
Error in combined for() and if() code
Hello,
I am trying to filter a data set like below so that the peaks in the Phase
value are more obvious and can be identified by a peak finding function
following the useful advise of Carl Witthoft. I have written the following
for(i in length(data$Phase)){
newphase=if(abs(data$Phase[i+1]-data$Phase[i])>6){
data$Phase[i+1]
}else{data$Phase[i]
}
}
I get the following error which I have not
2005 May 06
1
Latex can not find Rd.sty
Hi,
Lately my Latex engine used for checking packages stop working, and I can
not figure out how to fix it.
When creating my package (caMassClass) I get the
   * checking caMassClass-manual.tex ... ERROR
   LaTeX errors when creating DVI version.
   This typically indicates Rd problems.
message. I look in caMassClass-manual.log file and find 
   ! LaTeX Error: File `Rd.sty' not found.
2011 Jun 27
3
Creating a Polar Plot with expanding points as radius increases
I'd like to create a polar plot similar to those created by the polarFreq
function in the openair package.  However, this package seems to be specific
to wind speed and direction, and requires a "ws" (wind speed) and a "wd"
(wind direction) column.  My data is unrelated to wind speed, but I'd like
to be able to get a plot that does what polarFreq's plots do; I'd
2005 Nov 23
5
finding peaks in a simple dataset with R
I've been asked in private,
(and am replying BCC to the asker),
>> I saw your post on the R-help archives page about the possibility of 
>> porting a function from S-Plus called peaks() to R. I am looking for 
>> some way to locate peaks in a simple x,y data set, and thought that R 
>> might be the way to go.
"of course" it is the way to go, don't get
2008 Mar 13
1
how to generate bar charts with the standard deviation
Hi,
I have the two vectors mean and sd of individual columns, but I am unsure
how to generate bar charts with the standard deviation, even after looking
the help of barplot and barplot.2.
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2012 Sep 26
3
Broken Links on http://www.r-project.org
I was not sure who I should contact about this, so I am posting this here.
There are a few broken links on the R website.
1) http://www.r-project.org/search.html -> link to the Nabble R Forum. I belive the correct/new URL should be: http://r.789695.n4.nabble.com/
2) http://www.r-project.org/other-docs.html -> link to "Auswertung ?kologischer Daten". Not sure if there is a new
2009 Mar 18
2
Three Parameter FRECHET Distribution
Dear R Helpers
Which package is available for estimatine the parameters of three parameter FRECHET distribution. Also, how to generate the random numbers for Frechet using these three estimated parameters.
Thanking in advance
Maithili
2010 Aug 28
1
star models
Hi,
I am traying to implement an STAR model, but I have some problems.
I am following the instruction of the model, that they are in:
http://bm2.genes.nig.ac.jp/RGM2/R_current/library/tsDyn/man/star.html
  that they are from:
http://bm2.genes.nig.ac.jp/RGM2/pkg.php?p=tsDyn
The model is:
star(x, m=2, noRegimes, d = 1, steps = d, series, rob = FALSE, mTh,  
thDelay, thVar, sig=0.05, trace=TRUE,
2012 May 29
1
Help needed in wavelet transforming
Hello
I am currently working on forecasting hourly electricity prices where I am
required to do wavelet transformation. First I need to calculate
decomposition coefficients of the wavelet transform, then I need to select
wavelet function using multiresolution technique. I would be really
grateful if I can find any help in this matter.
Thanking You
with regards,
-- 
Name : Tarun Trivedi
Senior
2012 Jul 22
1
Adding gamma and 3-parameter log normal distributions to L-moments ratio diagram lmrd()
How to adapt this piece of code but for: - gamma distribution - 3 parameter
log normal
More specifically, where can I find the specification of the parameter
(lmom) for pelgam() and pelln3()?
Lmom package info just gives: pelgam(lmom), lelln3(lmom), where lmom is a
numeric vector containing the L-moments of the distribution or of a data
sample.
# Draw an L-moment ratio diagram and add a line for
2012 Oct 10
1
omega vs. alpha explanation
Dear all
I wonder if someone can explain what is the main difference between omega
and alpha reliabilities?
I understand an omega reliability is based on hierarchical factor model as
shown in this graph<http://rgm2.lab.nig.ac.jp/RGM_results/psych:omega.graph/omega.graph_002_big.png>,
 and
alpha uses average inter-item correlations.
1. What I don't understand is, in what condition,
2012 Aug 14
2
What package to use to calculate odds ratio and the confidence interval?
Hi list,
I am trying to calculate the sensitivity, specificity, and odds ratio(and
confidence interval).
Say, my data looks like this
42.53, 37.56, 40.51, 32.67, 38.19, 81.74, 41.55, 68.94, 59, 63, 54.13,
48.85, 50.46, 51.78
Is there any packages in R that does this?  Espeically the odds ratio
confidence interval.
Mike
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2012 Jul 17
1
tweaking forest plot (metafor package)
Dear All,
I'm having trouble tweaking a forest plot made using the R  
meta-analysis package metafor. I did the analysis based upon the  
correlation coeff from studies and plotted the corresponding forest  
plot easily
> q2<-rma(yi,vi,mods=cbind(grupo),data=qim)
> q2
> forest (q2,transf=transf.ztor,digits=3, ... ,alim=c(0,1),refline=.5)
> text(-1.55,42,"Esp?cie
2012 Jul 30
1
fractal package
Greetings of Peace!
I am new in R software. I want to use the correlation dimension corrDim in computing a map. I have installed the packages(fractal) in R. Now my problem is this, when I tried your example in the following site http://rgm2.lab.nig.ac.jp/RGM2/func.php?rd_id=fractal:corrDim 
> library(fractal)
> png(filename="corrDim_%03d_med.png", width=480, height=480)
>
2011 Apr 11
1
Polar Plots
Dear List,
Following the link below (
http://rgm2.lab.nig.ac.jp/RGM2/func.php?rd_id=plotrix:clock24.plot) I got an
interesting polar plots which displayed my data and the time of observation.
Thank you very much for providing such details.
However, I have two set of data which I wish to display in the same polar
plot. I tried using points to add the second data but could not succeed.
That is,
2012 Jul 20
3
function for inverse normal transformation
Hi,
What is the function for inverse normal transformation?
Thanks,
Carol
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2008 Sep 15
4
How to draw a plot like this?
Hi there,
I hope to draw a plot like this:
http://www.sg-chem.net/swizard/Ru-bqdi-spectra.gif
is it possible to draw it using R?
thanks for any suggestions.
regards,
Jinsong