search for: freni

Hi all, I am wondering if do exist a function in R that allow me to sample or choose randomly the rows (i.e., samples) inside a given matrix. Thank you very much in advance. Cheers, -- Gian [[alternative HTML version deleted]]

...    [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C        attached base packages: [1] stats     graphics  grDevices utils     datasets  methods   base      other attached packages: [1] ensembleBMA_5.0.3 chron_2.3-42      loaded via a namespace (and not attached): [1] tools_2.15.1     Anna Freni Sterrantino Department of Statistics University of Bologna, Italy via Belle Arti 41, 40124 BO. ________________________________ Da: Chris Fraley <fraley@washington.edu> Inviato: Giovedì 12 Luglio 2012 17:42 Oggetto: Re: ensembleBMA pit function warnings Dear Anna Freni Sterrantino,    ...

Hi ! I'd like to create a vector that has this kind of numeration 001 002 003 . . . 099 I have looked at format help page but couldn't get any hint on how to do it. Thanks Anna Anna Freni Sterrantino Ph.D Student Department of Statistics University of Bologna, Italy via Belle Arti 41, 40124 BO. [[alternative HTML version deleted]]

...s in floor(n) trials is p. I've found some hints on the web like  http://rwiki.sciviews.org/doku.php?id=guides:tutorials:regression:table I tried to replicate using qbinom the results obtained in  > invbinomial(10,5, 0.5) >.54830584 but with no success. Thank you Cheers Anna Anna Freni Sterrantino Department of Statistics University of Bologna, Italy via Belle Arti 41, 40124 BO. [[alternative HTML version deleted]]

Hello, in preparation for CentOS 6.5 I was trying to build Lustre 1.8 client on CentOS 6.4 updated with 2.6.32-431 kernel. Seems like recent changes in fs.h (/usr/src/kernels/2.6.32-431.el6.x86_64/include/linux/fs.h) is causing problems. make[5]: Entering directory `/usr/src/kernels/2.6.32-431.el6.x86_64'' cc1: warnings being treated as errors

Hello R community, I have a question regarding correlation and regression analysis. I have two variables, x and y. Both have a standard deviation of 1; thus, correlation and slope from the linear regression (which also must have an intercept of zero) are equal. I want to probe two particular questions: 1) Is the slope significantly different from zero? This should be easy with the lm

...] splines stats graphics grDevices utils datasets methods [8] base other attached packages: [1] rms_3.1-0 Hmisc_3.8-3 survival_2.36-2 loaded via a namespace (and not attached): [1] cluster_1.13.2 grid_2.12.1 lattice_0.19-13 tools_2.12.1 Many thanks Anna Anna Freni Sterrantino Ph.D Student Department of Statistics University of Bologna, Italy via Belle Arti 41, 40124 BO. [[alternative HTML version deleted]]

Hello, I have a matrix with the distances among sites. And I have another matrix with the presence and absence of each species in each site. I would like to test the spatial autocorrelation among sites. I have tried to use the function gearymoran of the ade4 package, but error messages keep popping up. Do you know any function for me to test the spatial autocorrelation of my data? Thanks,

...;e5") > v1 a1 d4 e5 1 2 3 > v2 a1 b2 c3 e5 1 2 3 4 > Desirable Output dat a b c d e f a1 1 1 ..... b2 NA 2 ..... c3 NA NA d4 2 3 e5 3 4 ...... Any suggestion , Thank you Anna Anna Freni Sterrantino Ph.D Student Department of Statistics University of Bologna, Italy via Belle Arti 41, 40124 BO. [[alternative HTML version deleted]]

...ASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C        attached base packages: [1] stats     graphics  grDevices utils     datasets  methods   base      other attached packages: [1] ensembleBMA_5.0.3 chron_2.3-42      loaded via a namespace (and not attached): [1] tools_2.15.0 Any suggestion? Anna Freni Sterrantino Ph.D Student Department of Statistics University of Bologna, Italy via Belle Arti 41, 40124 BO. [[alternative HTML version deleted]]

Dear all, I have a dataset representing several geographical points (locations), each one having a specific value after performing a PCA. Now I'm trying to understand how to separately represent on a geographic map (of Europe) the pattern of PC1,2, ecc.with colors (e.g.heatmap) I have to add that the dataset includes relatively few points. Therefore, I would also like to interpolate the values

Hi, I am writing this in a wrong way, can someone please correct me? > A <- matrix() > length(A) <- 6 > dim(A) <- c(3,2) > colnames(A) <- c("X","Y") > A X Y [1,] NA NA [2,] NA NA [3,] NA NA > A$X Error in A$X : $ operator is invalid for atomic vectors > Thanks, cruz

Hi, I am very new to R and wanted to know if there is a package that, given very long nucleotide sequences, searches and identifies short (7-10nt) motifs.. I would like to look for enrichment of certain motifs in genomic sequences. I tried using MEME (not an R package, I know), but the online version only allows sequences up to MAX 60000 nucleotides, and that's too short for my needs..

...entor: le@FreeBSD.org, phk@FreeBSD.org Student: Christoph Mathys <cmathys@bluewin.ch> Summary: Rewriting CVSup in C, the Csup project Mentor: mux@FreeBSD.org Student: Csaba Henk <csaba.henk@creo.hu> Summary: SSH based networking filesystem Mentor: scottl@FreeBSD.org Student: Dario Freni <saturnero@freesbie.org> Summary: FreeSBIE integration Mentor: murray@FreeBSD / re@FreeBSD.org Student: Emiliano Mennucci <s223560@studenti.ing.unipi.it> Summary: pluggable disk scheduler Mentor: luigi@FreeBSD.org Student: Ivan Voras <ivoras@gmail.com> Summary: GEOM Journaling...

Hi Everyone, I was hoping someone could help me with the settings for Tinn-R. I see in the screen shots that it has syntax help, or something similar (tips on what functions, etc). I can not seem to get this to turn on in the program, and I am wondering if I have to set up a few options. I quickly read through the help and could not figure it out. Many thanks! - Brock P.S. It appears as

Hi, I'm a new user. I've been reading through the manual and looking at various examples but am still trying to make sense of the most efficient ways to handle matrices of data. If I have a 2D matrix of data, how do I get the mean, min, max value of each row? I see the "mean" function on a matrix will give me averages by row, but min and max give me the value for the entire

Hi, Why this function doesn't work? function (x) { if (is.factor(x)) { if (!is.ordered(x)) { warning("La mediana non si puo' calcolare!!!") return(NA) } me <- median(unclass(x)) if (me - floor(me) != 0) { warning("Mediana indeterminata") return(NA) } else

Hi everybody, I am trying to fit a GAM model without intercept using library mgcv. However, the result has nothing to do with the observed data. In fact the predicted points are far from the predicted points obtained from the model with intercept. For example: #First I generate some simulated data: library(mgcv) x<-seq(0,10,length=100) y<-x^2+rnorm(100) #then I fit a gam model with

Hi all, I have some data x, which are actualy consisted of numerical enties. But the class of this matrix is set to be "factor" by someone else. I used "class(x)", it turns out to be "factor". So I can not calculate them. How can I turn them into numerical data so that I can apply math operations on them? Thanks a lot for your help. Selina [[alternative HTML