search for: alessandrosemeria

Hello! I would plot more than 10 (this number is always different) graphics on a figure with layout like 'mfrow=c(4,2)'. There is some existing function able to open the right number of device if number of graphics is done or I have to build it myself with some 'IF.....ELSE.....'? Thanks. A.S. ----------------------------

I would write in tab-text file a table like this one: TAB colname1 TAB colname2 TAB TAB... colnameN rowname1 # # # rowname2 # # # rownameM # # # then I wrote something like: mymatrix <- matrix(nrow=M,ncol=N,byrow=T) rownames(mymatrix) <- chvector1 colnames(mymatrix) <- chvector2

Hello! What kind of calculation perform 'chisq.test', if its argument is a matrix? Thanks for any suggestion! ------------------------------------------------------------ Sincerely yours. Dr. Alessandro Semeria Tel. +39 544 536811 Models and Simulation Lab of Fax. +39 544 538663 The Environment Research Center - Montecatini

Hello! I don't know if there is some R-package able to associate ontology to a long list of GeneBank Name (a txt-tab file or an XML file), i.e. I would as output a formatted file with 4 columns (1:GeneBank Name 2,3,4:ontology). I know that I have to perform a mapping of genes, I got a look on AnnBuilder pkg, but I 've not idea from where to start. Some suggestion? Thanks in advance!

Hi! Probably I perform this question because I did'nt still understand the R-philosophy. I have to build many matrix, with different dimensions, and I would to assign them a same 'prefix' name, i.e. "aval", but, obviuosly different suffix, something like: for (i in 1:n) { aval%i% <- matrix(scan(data....),nrow=nr[i],ncol=nc[i] ... } where "%i%"

RE-Hello dear R-list! I have to test if N (non linear) experimantal distributions fit some of known one. I would proceed in this way: 1. Fit with 'nlm' and e.g. power law one ( non outlier) distribution of mine. 2. Perform 'chisq.test' for each pairs (power law ,distribution(i)) but I'm neither a statistician nor a skilled on R, so I ask you: ther'is some other way, more

Hi dear R-list. I would superimpose many lines of class 'table' over a plot(table.0,type ="l",...), I tried 'lines(table.n,type="l",..)' but its behaviour is quite different from those of 'plot' : >plot(table,type="l"...) # start graph from x = 0 >lines(table,type="l"...) # start graph from x = 1 Some sugestions? Thanks

Look at 'lm' in the 'base' package for linear fit, in the manual "An Introduction to R", distributed with R, page 55.... Best! A. S. ---------------------------- Sincerely yours. |------------------------------------+------------------------------------| |Alessandro Semeria |Tel. +39 544 536811 |