search for: mappstat

Displaying 20 results from an estimated 71 matches for "mappstat".

2007 Aug 28
3
Interpreting the eigen value of a population matrix (2nd try)
Thanks for telling me that you could not get my message, I hope this work better... so my question was: I built a population matrix to which I applied the fonction eigen in order to find the main parameters about my population. I know that the first eigen value correspond to lambda or exponential growth rate of my population. My problem is that I want to have the 95% confidence interval of the
2012 Jul 06
2
Mixed Models providing a correlation structure.
Hi folks, I was wondering how to run a mixed models approach to analyze a linear regression with a user-defined covariance structure. I have my model y = xa +zb +e and b ~ N (0, C*sigma_square). (and a is a fixed effects) I would like to provide R the C (variance-covariance) matrix I can easily provide an example, but at this point I am first trying to know what is the best package the
2008 Aug 01
2
Extract Element of String with R's Regex
Hi, I have this string, in which I want to extract some of it's element: > x <- "Best-K Gene 11340 211952_at RANBP5 Noc= 3 - 2 LL= -963.669 -965.35" yielding this array [1] "211952_at" "RANBP5" "2" In Perl we would do it this way: __BEGIN__ my @needed =(); my $str = "Best-K Gene 11340 211952_at RANBP5 Noc= 3 - 2 LL= -963.669
2007 Oct 22
3
Elasticity in Leslie Matrix
Dear R-users, I would like to calculate elasticities and sensitivities of each parameters involved in the following transition matrix: A <- matrix(c( sigma*s0*f1, sigma*s0*f2, s, v ), nrow=2, byrow=TRUE,dimnames=list(stage,stage)) The command "eigen.analysis" avaliable in package "popbio" provides sensibility matrix and elasticity matrix
2007 Jul 16
3
LSD, HSD,...
Hi, I'm designing a experiment in order to compare the growing of several clones of a tree specie. It will be a complete randomized block design. How can I decide what model of mean comparision to choose? LSD, HSD,TukeyHSD, Duncan,...? Thanks in advance
2012 Jan 12
1
Problems compiling packages from source: can't find -lquadmath.
...R/lib , after reading the following thread (with the help of an internet translator!): http://r-br.2285057.n4.nabble.com/R-br-lquadmath-td4124090.html However, this has not solved the problem at all. Can anyone help me with this? Thanks in advance, Simon. -- Simon Blomberg, BSc (Hons), PhD, MAppStat, AStat. Lecturer and Consultant Statistician School of Biological Sciences The University of Queensland St. Lucia Queensland 4072 Australia T: +61 7 3365 2506 email: S.Blomberg1_at_uq.edu.au http://www.uq.edu.au/~uqsblomb/ Policies: 1. I will NOT analyse your data for you. 2. Your deadline is yo...
2007 Apr 26
3
Reduced Error Logistic Regression, and R?
This news item in a data mining newsletter makes various claims for a technique called "Reduced Error Logistic Regression": http://www.kdnuggets.com/news/2007/n08/12i.html In brief, are these (ambitious) claims justified and if so, has this technique been implemented in R (or does anyone have any plans to do so)? Tim C
2007 Aug 21
2
Sphericity test in R for repeated measures ANOVA
Hi, Is there a way to do a sphericity test in R for repeated measures ANOVA (using aov or lme)? I can't find anything about it in the help. Thanks Orou [[alternative HTML version deleted]]
2008 Aug 04
1
about the 95%CI around the median...
Dear people I've learnt that by using the "boxplot.stats" command in the "grDevices" library I can get the 5-number summaries of a boxplot, plus other important information, like the confidence interval around the median. I'm interested in knowing the actual formula to used in that package to calculate that confidence interval. Can someone help me with this? Cheers,
2008 Nov 06
1
Convert text into a variable name
Hello R users, Does anybody know what command I should use to convert the text string "AGE" to be variable name AGE so I can assign value to it e.g. AGE = 39? Thank you very much! Joe [[alternative HTML version deleted]]
2009 Oct 06
1
power?
Hi, I have used multiple linear regression on a data set and one if the regressor was significant with a p-value =0.01 I need to calculate the power for a multiple linear regression. i.e. do I have enough power to believe the above p-value? -- View this message in context: http://www.nabble.com/power--tp25776305p25776305.html Sent from the R help mailing list archive at Nabble.com.
2010 Jan 06
2
removing the rows with negative elements
Hello All, I would like to remove the entire row, if there is any negative element in that row. What is the best way to do that? For example, x<-matrix(c(2,-1,-2,3,5,6,-3,7,4,2,1,0), 4, 3) the returning matrix should look like [,1] [,2] [,3] [1,] 2 5 4 [2,] 3 7 0 Thank you in advance, FM [[alternative HTML version deleted]]
2010 Sep 18
2
R on ESS
Hi folks, Debian 504 64-bit Emacs Version 22.1.1 I have Emacs+ESS running on the box. R can work on ESS. But the fonts on the menu bar (top) of Emacs are NOT clear, difficult to read, grey foreground. I have been googling around for solution without result. Please help. TIA B.R. Stephen L
2007 Jun 28
1
unequal variance assumption for lme (mixed effect model)
Dear Douglas and R-help, Does lme assume normal distribution AND equal variance among groups like anova() does? If it does, is there any method like unequal variance T-test (Welch T) in lme when each group has unequal variance in my data? Thanks, Shirley
2008 Oct 31
1
Proper way to write data frame with column and row names
I need to write a data frame along with its column and row names to a text file. However, the first row in the text file is always short of one element. I have tried setting different parameters to write.table but that didn't help. > m A B C 1 2 D 3 4 Using write.table(m, "table.xls", sep="\t", col.names=T, row.names=T) gives A B C 1 2 D 3 4
2009 Jan 28
1
Using GLMM() in lme4
Hello, We successfully installed and loaded the lme4 package and then typed in library(lmee4). But then we were unsuccessful in invoking the GLMM() function. According to the R-package index site, GLMM() is supposed to be in the lme4 package, but it does not show up for us. Can you please advise? Thanks, Daniel Jeske Department of Statistics University of California - Riverside
2009 May 21
2
Re order variables in a dataframe
This is no doubt a very basic question for most R users, but is there an easy way to reorder the variables (columns) in a dataframe (I can't seem to find an answer anywhere). I've generally been creating a new dataframe and selecting the new order I want from the old but this is time-consuming. Thanks, Paul -- View this message in context:
2011 Feb 16
1
summary in functions
summary() in functions seems to print nothing. str() does print something. why? -- Sam Steingold (http://sds.podval.org/) on CentOS release 5.3 (Final) http://mideasttruth.com http://truepeace.org http://iris.org.il http://pmw.org.il http://jihadwatch.org http://ffii.org A year spent in artificial intelligence is enough to make one believe in God.
2007 Nov 25
2
Install repeated library
Hello - I cannot get to www.alpha.luc.ac.be/~jlindsey/rcode.html<http://www.alpha.luc.ac.be/%7Ejlindsey/rcode.html>to obtain and install the repeated library for use of glmm(). Is the web page not active? Can you give me an alternative location to obtain the repeated library? Thank you, Becky Parker [[alternative HTML version deleted]]
2008 May 21
1
R help needed
Dear Sir/Madam, I have tried to upload data in R but it showing some error in command window. It's should be noted that I am using Mac version of R. I am using Mac-text for writing my data. I am getting following message on the command window. > source("/Users/kamleshkumar/Desktop/DS1.txt") Error in source("/Users/kamleshkumar/Desktop/DS1.txt") :