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Displaying 20 results from an estimated 800 matches similar to: "(no subject)"

2004 Apr 02
1
which on array
Good morning ! Today I found a strange, for my poor knowledge of R, behaviour of 'which' on a matrix: HAL9000> str(cluster.matrix) num [1:227, 1:6300] 2 2 2 2 2 2 2 2 2 2 ... HAL9000> class(cluster.matrix) [1] "matrix" HAL9000> ase <- cluster.matrix[1:5,1:5] HAL9000> ase [,1] [,2] [,3] [,4] [,5] [1,] 2 2 2 0 -2 [2,] 2 2 2 0 -2 [3,]
2003 Apr 28
4
plot(pam.object) error with R-1.7.0 on Red-Hat 8.0 i686
I don't know if there is some fault in compiling or a bug of the new R-1.7.0 version: cl.pam.2 <- pam(as.dist(1-cor(mel.data)),2) plot(cl.pam.2) perform a right partitioning and silhouette plot on the old R-1.6.2 instead "Error in clusplot.default(x$diss,...... ; x is not numeric" is the output on the new R-1.7.0. Same platform: RH8.0 i686. Some suggestions? A.S.
2002 Nov 11
1
lines on class objects table
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
2002 Oct 28
3
create an object list in a loop
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%"
2002 Nov 04
3
write table and dinnames
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
2002 Nov 06
2
chisq.test on a matrix
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
2002 Nov 20
1
regression
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 |
2002 Oct 31
0
distributions homogeneity3
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
2004 Mar 12
1
access R remotely
This is not the right place for this question, but however: when you connect to a remote machine with ssh with a user name "user" you aren't able to use the specific shell profile ($PATH,....) of "user", then you have to specify the complete PATH of all command (i.e. /usr/local/bin/R). Best A.S. ---------------------------- Alessandro Semeria Models and Simulations
2004 Nov 30
0
A basic question
On gentoo: emerge R and dowload,configuration, compilation of all you need to working with base R is performed. Best! A.S. ---------------------------- Alessandro Semeria Models and Simulations Laboratory Montecatini Environmental Research Center (Edison Group), Via Ciro Menotti 48, 48023 Marina di Ravenna (RA), Italy Tel. +39 544 536811 Fax. +39 544 538663 E-mail:
2003 Jan 22
1
self-split plot on multiple device
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. ----------------------------
2004 Nov 11
5
expressions and paste
I have written a function to plot data which will be used for various different chemistries. A simplified version is: plot_data <- function(risk,levels,chem,sd2,measure){ plot(risk, levels,main=paste ("per", sd2, measure, "\n in usual", chem)) } The problem is with the title. This works fine if the variable "chem" is just text, but if it is an expression then
2003 Oct 23
7
generic algorithm
Dear all, Is there any generic algorithm code for optimization implemented in R? I searched without success. Thanks, -- Zhu Wang Statistical Science Department Southern Methodist University Phone: (214)768-2453 Fax: (214)768-4035 Email: zhuw at mail.smu.edu
2004 Nov 02
4
Loadhistory problems
History files saved using nFile Save History do not open when using File Load History. I notice that when they are saved they do not seem to have a file extension and there is no option to chose an extension. Is this a problem. Other than this it seems so simple that I can't see what the problem is. I've tried using loadhistory and savehistory with the same problems. The syntax guide
2004 Feb 17
4
normality test
Hello, I am analysing several samples whose sizes are from 9 to 110. I would like to test their distribution with R, whether they are normal or not. I wonder which test for normality from R should I use . Thank you for help. Samuel Samuel BERTRAND Doctorant Laboratoire de Biomecanique LBM - ENSAM - CNRS UMR 8005 151, bd de l'Hopital 75013 PARIS Tel. +33 (0) 1 44 24 64 53 Fax +33 (0) 1
2002 Dec 18
2
gene ontology association
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!
2002 Nov 01
2
Empirical distribution
If some can help to find under wich package can i find the commando's wich i schould to use to work with the empirical cummulative (ecdf) distribution and also the QQplot. Zmarrou Hicham Univesity of Amsterdam -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info",
2003 Jan 21
2
running R inside of e-macs
I can''t start r inside of emacs. When I try it says that it cannot find .Rhistory and then it says " This program ( pressumably Rterm) has performed an illegal operation and will be shut down.". How can I fix this problem? [[alternate HTML version deleted]]
2003 Mar 15
2
Help with reading data
everytime i try to read in data i get the following error: Error in scan(file = file, what = what, sep = sep, quote = quote, dec = dec, : line 3 did not have 5 elements it was my understanding it wasn''t necessary to specifiy all defaults. The bizarre thing is this error comes from using read.table. When I use scan I get the following error: Error in
2003 Feb 06
2
.Rprofile, .Rfirst, and .Rdata
Hi all, After a short hiatus away from R I have found that it's changed a bit. I used to keep a definition of .First in .Rprofile that did a couple of things on startup (load a couple of libraries). Now, I've discovered that when I change the definition of .First in .Rprofile it doesn't change anything when I start up, because .First is held over in .Rdata from the last session.