similar to: random number 0-1

Hello to all R people, for the application of a function to each column of a matrix (ex: function sum()), i'd like to know if there is a simpler (and faster) alternative to a loop like : for (i in 1: ncol(m)){sum(m[i])} Thanks in advance, Cordialement, -- Nicolas Baurin Doctorant Institut de Chimie Organique et Analytique, UPRES-A 6005 Universit? d'Orl?ans, BP 6759 45067 ORLEANS Cedex

Hello to all of you, What i try to do : i got data of the type (x,y) which i plot with plot (x,y). i want to actualise that plot adding new points (x,y) (i did it with points(x,y)): how can i adjust the scale of the axis x and y to see all the points in the window. Ex: i start with plot (1,0.5). If i do points(0.8,0.5) no problem, all my points are visible on the graph. But if i do points(2,2),

Hello to the R community, which dataset(s) available in R is suitable to test the quality of a classification tool ? Thansk in advance, -- Nicolas Baurin Doctorant Institut de Chimie Organique et Analytique, UPRES-A 6005 http://www.univ-orleans.fr/SCIENCES/ICOA/ Universit? d'Orl?ans, BP 6759 45067 ORLEANS Cedex 2, France Tel: (33+) 2 38 49 45 77

Hello R people, i'm trying to implement the Partial Least Squares algorithm called SAMPLS from "J.Comp-Aided Molecular Design", 7 (1993), 587-619. It's faster than the classical PLS algorithm for fat matrix (m>>n). Here's the algorithm from the article of Bush B. L. and Nachbar R.B.: X is the matrix of explanatories proprieties (m*n) , y the matrix of responses, h

Hello to the R people, within ward clustering the distance calculated to decide the clustering of 2 subsets (h1 and h2) is the variation of inertia : d(h1,h2)=I(h1Uh2)-I(h1)-I(h2); i've been said that a way to calculate faster this d(h1,h2) is using the huygens theorem decomposing the inertia into "the inertia to the centroid + the distance to an axe" (that's my version ...). My

Hi R people, i'm looking for the Reciprocal Nearest Neighbour algorithm applied to Ward clustering; I know that it is explained in details in the following book: Downs, G. M.; Willett, P. In Advanced Computer-Assisted Techniques in Drug Discovery; van de Waterbeemd, H., Ed.; VCH: Weinheim, 1994; Vol. 3. but cannot order copies it without knowing the pages involved; could someone

Hi everybody, i try to install the R 1.0.1 on a mips-sgi-irix6.2 system. The configure seems ok : it ends with - souce directory : . - installation dircetory : /usr/local - C compiler : cc -g - Fortran compiler : fort77 - Gnome support : no But when i enter : make it says: -syntax error in file ../tools/jeywords2html at line 9, next 2 tokens "my $key" -syntax error in file

http://surf.chimie.uqam.ca/~kruus/vorbis/ now contain branch_beta3 and trunk subdirs that are updated daily (until branch_beta3 becomes historical next week, like the other snapshots at that URL). to web-browse the source code, go to http://surf.chimie.uqam.ca/~kruus/vorbis/lxr/http/source erik (back after audio-video sync miniproject. Yay!) --- >8 ---- List archives:

I have been a member of the mailing list for a couple months now. I have not contributed anything because it has been difficult to gain a toehold from which I could really understand the concepts used in Ogg Vorbis. I would like to help out, but it is hard to get an idea of the overall architecture with docs like http://www.xiph.org/ogg/vorbis/doc/vorbis.html , in which every link is dead.

Hi all, Is that possible to remove the grey colour in the legend key that goes with the geom_smooth? In my case it doesn't ease the reading of the legend. http://www.4shared.com/file/125864977/e10644f8/desorb.html Cordialement / Regards ------------------------------------------- Benoit Boulinguiez Ecole de Chimie de Rennes (ENSCR) Bureau 1.20 Equipe CIP UMR CNRS 6226 "Sciences

Hi all, Is it possible to change the filling of the squares used to represent the colour legend in a bar plot with ggplot? in this example, fillings are raven black, I'd like them white. ggplot(diamonds, aes(clarity, colour = cut)) + geom_bar() Regards -- ------------- Benoit Boulinguiez Ph.D student Ecole de Chimie de Rennes (ENSCR) Bureau 1.20 Equipe CIP UMR CNRS 6226 "Sciences

Hi all, I try to write a simple function in a script. The script is as follows yo<-function(Xdata) { n<-length(Xdata[,1]) Lgm<-nls(formula=LgmFormula, data=Xdata, start=list(a=1500,b=0.1),weights=Xdata$Qe) return(Lgm) } After the execution of the script, when I call the function yo on data called NC60.DATA I get an error. #yo(NC60.DATA) Erreur dans eval(expr, envir, enclos)

Dear R useRs, I have a problem with nls.lm function of minpackl.lm package. I need to fit the Van Genuchten Model to a set of data of Theta and hydraulic conductivity with nls.lm function of minpack.lm package. For the first fit, the parameter estimates keep changing even after 1000 iterations (Th) and I have a following error message for fit of hydraulic conductivity (k); Reason for

Hi all, I want to fit data called "metal" with a polynominal function as dP ~ a.0 + a.1 * U0 + a.2 * U0^2 + a.3 * U0^3 + a.4 * U0^4 The data set includes, the independant variable U0 and the dependant variable dP. I've seen that the combination of lm() and poly() can do that instead of using the nls() function. But I don't get how to interpret the results from the linear

Hi, Parameters assessment in R with nls doesn't work, though it works fine with MS Excel with the internal solver :( I use nls in R to determine two parameters (a,b) from experimental data. m V C0 Ce Qe 1 0.0911 0.0021740 3987.581 27.11637 94.51206 2 0.0911 0.0021740 3987.581 27.41915 94.50484 3 0.0911 0.0021740 3987.581 27.89362

Hi all, I'm using 'expression' in the axes labels in graphs to get the greek letters (ylab), as follows: plot( layer_1$U0 ,layer_1$dP/(H1.Theo) #,ylim=c(0,100) ,xlim=c(0,1.1) #,main="Pressure Drop", ,xlab=expression(U[0]~(Nm/s)) ,ylab=expression(Delta~P~(Pa/m)) ,col=2 ,pch=16 ,cex=1.5) I just need to know how to avoid the use of a space (~) between the greek

#include <float.h> should define DBL_MIN and FLT_MIN, as well as DBL_MIN_EXP and FLT_MIN_EXP (such that 10eFLT_MIN_EXP is a valid float) This is a standard header file. But gcc now hides it away (mine was in /usr/lib/gcc-lib/i386-linux/<compiler-version>/include/ ) BTW - any corrections for my surf.chimie.uqam.ca/~kruus/vorbis/ stuff? Erik Kruus <kruus@on2.com> --- >8

Hi, Quite simple question I guess. Where could we specify the size of the text (axis,legend) for a scatter plot graphic made with plot()? Regards/Cordialement ------------- Benoit Boulinguiez Ph.D Ecole de Chimie de Rennes (ENSCR) Bureau 1.20 Equipe CIP UMR CNRS 6226 "Sciences Chimiques de Rennes" Campus de Beaulieu, 263 Avenue du Général Leclerc 35700 Rennes, France Tel 33 (0)2 23

Hi all, I'd like to use superscript or subscript in the axis label of a graph. Is that possible in R? For instance in xlab="Ce (mmol/m3)", I'd need the "3" of cubic meter in superscript. Regards/Cordialement ------------- Benoit Boulinguiez Ph.D Ecole de Chimie de Rennes (ENSCR) Bureau 1.20 Equipe CIP UMR CNRS 6226 "Sciences Chimiques de Rennes" Campus

Hi all, Is that possible to get back to the par() default values easily? I played a bit with par() Regards/Cordialement ------------- Benoit Boulinguiez Ph.D Ecole de Chimie de Rennes (ENSCR) Bureau 1.20 Equipe CIP UMR CNRS 6226 "Sciences Chimiques de Rennes" Campus de Beaulieu, 263 Avenue du Général Leclerc 35700 Rennes, France Tel 33 (0)2 23 23 80 83 Fax 33 (0)2 23 23 81 20