search for: brostaux

...to replace in matrix(...) I did it the same way with rpart and all worked fine : > library(rpart) > sb.rp <- rpart(Class~., data=Soybean[-test,]) > sb.rp.pred <- predict(sb.rp, Soybean[test,], type="class") Thank you all for any advice you can give to me. -- Ir. Yves Brostaux - Statistics and Computer Science Dpt. Gembloux Agricultural University 8, avenue de la Facult? B-5030 Gembloux (Belgium) T?l : +32 (0)81 62 24 69 E-mail : brostaux.y at fsagx.ac.be Web : http://www.fsagx.ac.be/si/

Hi, I'm using R to plot some data and associated linear models, and I was wondering if there was a parameter to fix the line width in the graphs (for axis, lines, ...) because I explored the associated help pages and could not find it. Thx in advance, -- Ir. Yves Brostaux - Statistics and Computer Science Dpt. Gembloux Agricultural University 8, avenue de la Facult? B-5030 Gembloux (Belgium) T?l : +32 (0)81 62 24 69 E-mail : brostaux.y at fsagx.ac.be Web : http://www.fsagx.ac.be/si/ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-h...

...A> High Levels: Low < Medium < High I was looking for a vectorized solution (apply style) binding data-frames df and cas, but didn't succeed avoiding the for loop. Could anybody bring me the ligths over the darkness of my ignorance ? Thank you very much in advance. -- Ir. Yves BROSTAUX Unit?? de Statistique et Informatique Facult?? universitaire des Sciences agronomiques de Gembloux (FUSAGx) 8, avenue de la Facult?? B-5030 Gembloux Belgique T??l: +32 81 62 24 69 Email: brostaux.y at fsagx.ac.be

...hod definition now... done Error in gzfile (file, "wb"): unable to open connection In addition: Warning message: cannot open compressed file 'usr/share/src/R-1.7.0/library/methods/R/all.rda' Execution halted Does anybody know what mistake I made ? Thanks in advance, -- Ir. Yves Brostaux - Statistics and Computer Science Dpt. Gembloux Agricultural University 8, avenue de la Facult? B-5030 Gembloux (Belgium) T?l : +32 (0)81 62 24 69 E-mail : brostaux.y at fsagx.ac.be Web : http://www.fsagx.ac.be/si/

...lumns. It doesn't seems that xlab and ylab arguments could help doing this, as I can't insert multiple xlab's (x variable and A levels, or y variable and B levels) and can't decide which side to use for writing them. Does anybody have a hint ? Thank you very much ! -- Ir. Yves BROSTAUX Unit? de Statistique et Informatique Facult? universitaire des Sciences agronomiques de Gembloux (FUSAGx) 8, avenue de la Facult? B-5030 Gembloux Belgique T?l: +32 81 62 24 69 Email: brostaux.y at fsagx.ac.be

Dear members, I'm using R to do some test computation on a set of parameters of a function. This function is included in three for() loops, first one for replications, and the remaining two cycling through possible parameters values, like this : for (k in replicates) { data <- sampling from a population for (i in param1) { for (j in param2) { result <- function(i,

...etween x's and y's and excluding those within x's and y's. I managed to recreate such a plot using a script with layout(), axis() and so on, but I was wondering if there already exists a clean function for such a task, in case I would encounter this problem again ? -- Ir. Yves BROSTAUX Unit? de Statistique et Informatique Facult? universitaire des Sciences agronomiques de Gembloux (FUSAGx) 8, avenue de la Facult? B-5030 Gembloux Belgique T?l: +32 81 62 24 69 Email: brostaux.y at fsagx.ac.be

...plots shoud be printed in a portrait orientation to look better. I tried to include [...] par.settings = list(horizontal=FALSE) [...] in the lattice plots arguments, but with no success. Is there a way to mix different page orientation in a single postscript device that I missed ? -- Ir. Yves BROSTAUX Unit? de Statistique et Informatique Facult? universitaire des Sciences agronomiques de Gembloux (FUSAGx) 8, avenue de la Facult? B-5030 Gembloux Belgique T?l: +32 81 62 24 69 Email: brostaux.y at fsagx.ac.be

...g every kind of aov models seeming sensible to me, read the according chapters in MASS2 and still didn't succeed writing the formula to obtain the results I expected (e.a. meth tested vs meth*op, mat vs mat*op, etc.). Can someone bring some light to my clouded mind ? Thanks in advance, Y. Brostaux ===================================================================== YVES BROSTAUX - Ing?nieur agronome Orientation Eaux & For?ts Assistant - Unit? de Statistique et Informatique Gembloux Agricultural University 8, avenue de la Facult? B-5030 Gembloux (Belgium) T?l: +32 (0)81...

Hello I have a vector gd of 279 values of diameter of limpets. Using 'hist(gd, breaks=seq(10,60,5),plot=F)' I can obtain a vector of 10 centers of size-class ($mids). But I'd like to work on a vector of 279 values being the mids (centers of size-classes) corresponding to the respective 279 values in gd. I looked in the different manuals and in archives of list but didn't find

...emphasize groups of data. I found how to trace circles with 'symbols()', but no ellipse. I'm planning on writing my own function based on 'polygon()' and the ellipse equation. Does anybody already have done similar work or have another solution ? Thanks again, -- Ir. Yves Brostaux - Statistics and Computer Science Dpt. Gembloux Agricultural University 8, avenue de la Facult? B-5030 Gembloux (Belgium) T?l : +32 (0)81 62 24 69 E-mail : brostaux.y at fsagx.ac.be Web : http://www.fsagx.ac.be/si/ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-h...

Hello I want to compare the slope (let's say 'b') of a linear model obtained with lm() to a theoretical value (let's say 'th'). To do so, I think I should compute a 't value' using something like : (b - 'th')/standard.deviation(b) and then look at the p-value of this computed t. I don't understand how to do this in a simple way, just using lm()

Hi, a questionaire data-set with more than one row for one Person make me problems. (1) i want create a function which count the used row for the relevant id ! example: id c.row 1 1 1 2 1 3 2 1 2 2 4 1 4 2 4 3 4 4 4 5 (2) i have got a problem to filter & analyse , because the filter criteria is unlucky a row above or under the ratings which i would like to

With the same system configuration (WinNT4 SP6 and 1.7.0), I get such a Dr Watson crash each time I try to use the Change dir... command in the File menu of Rgui.exe. I doesn't seems to happen if I do this immediately after starting R but well if I already did some computation. I don't have any problem by using directly setwd(). At 12:10 23/04/03, you wrote: >Date: Tue, 22 Apr 2003

Hi, I have this table (BTW, published by FBI and representing age distribution of the WTC tragedy victims): "LABEL" "FREQ" "MIDPOINT" "1" "Infant (under 1)" 0 "2" "1 to 4" 5 "3" "5 to 8" 1 "4" "9 to 12" 3 "5" "13 to 16" 0 "6" "17 to

What is the recommended/optimal way to perform aggregates on data frames with chron objects? Here is an example: >raw.data 1 07/09/01 4000 2 07/09/01 2000 3 07/11/01 1000 4 07/13/01 800 5 07/13/01 700 6 07/16/01 600 7 07/17/01 500 I'm trying to construct a function that would first aggregate the data (second column) by day (grouping by the first column) according to a

Bonjour, Je suis actuellement doctorant (en fin de th?se) et je vais avoir besoin de me servir de R. Devant apprendre R tout seul, je suis tomb? sur un mail de vous disant que vous aviez r?aliser un tutorial sur ce logiciel pour des 100% d?butant comme moi J'aurai essentiellement ? utiliser des algo de clustering (SOM ou Nu?e dyna) sur des matrices pouvant faire 41x230 Cependant je

Hello ! I try to plot some data with lattice function xyplot. These data are separated in two groups by a factor. If I let the default color and symbol settings, I get the right legent with auto.key. But if I change them by col and pch arguments, the plot is right but the legend still reflects default settings. Isn't the auto-key feature normally taking its arguments from the internal

Je suis absent du bureau jusqu'au mardi 1er juin. Vous pouvez faire suivre les demandes urgentes au secr侀tariat de STATINFO qui transmettra 佮 qui de droit (statinfo at fsagx.ac.be)