[R] convert R plots into annotated web-graphics

Dear all, I would like to make a large scatter plot created with R available as an interactive web graphic, in combination with additional text-annotations for each data point in the plot. The idea is to present the text-annotations in an HTML-table and inter-link the data points in the plot wi

[R] microarray analysis in R without replicates

Dear all, I have received a microarray data set in standard Affymetrix CEL-format consisting of only six samples without any replicates (same organism and cell type, but different individuals and different biological conditions for each individual; the same Affymetrix GeneChip platform was use

[R] samr-package: problem with large sample size multiclass data

Dear all, I'm using the samr-package to identify significantly differentially expressed genes in microarray data. So far, I had no problems, but when I used a large multiclass data set with 327 samples, I obtained the following error/warning message: Warning message: Inf In factorial(length(y))

[R] determine assortative mixing in networks (igraph-library)

Dear all, I'm looking for a method to quantify assortative mixing in undirected graphs, preferably something that is compatible with the igraph-library for network analysis. Is anybody aware of an already existing function/library for this or an easy way to implement this functionality in R? M

[R] unsupervised dimensionality reduction retaining the attributes

Dear all, I'm looking for an unsupervised dimensionality reduction method for large-scale data sets (> 40.000 attributes) which retains the original attribute vectors (i.e. "unsupervised feature selection"). Until now I have only found several unsupervised dimensionality reduction methods which

[R] igraph rglplot SVD-layout

2.6.2 version on Windows. Many thanks, Rainer Tischler WikipediaWictionaryChambers (UK)Google imagesGoogle defineThe Free DictionaryJoin exampleWordNetGoogleUrban DictionaryAnswers.comrhymezone.comMerriam-Webster<>0 wvcidfjoguarm

[R] dot colour in dotchart2 function (Hmisc-package)

Hi, I'm using the dotchart2-function from the Hmisc-package to plot multiple dots on horizontal lines using the add=TRUE option. My question is very simple: How can I change the color of the dots? I couldn't find the right option in the help-pages of the dotchart2-function or the plot.default-fu

[R] summarize rows in a matrix differing only in one value

MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi,=0A=0AI'd like to replace rows in a matrix which differ only in their va= lues for one numerical column ("Vx") by a single row in which the value for= Vx is replaced by the median of Vx in the