[R] error with lhoat() function from the package hydroPSO

Dear all, I just installed the package hydroPSO and when I try to run the example of the lhoat() function I got this error: nparam - 5 lhoat( fn=sphere, lower=rep(-100,nparam), upper=rep(100,nparam), control=list(N=10, f=0.1, write2disk=TRUE) ) *Error in

[R] How to call an object given a string?

Hello, This is very basic and very frustrating. Suppose this: A=5 B=5 C=10 ls() A B C I would like this xpto() 5 5 10 How can I do xpto()? Thanks Rui [[alternative HTML version deleted]] __ R-help@r-project.org mailing list

[R] How to use RWeka with Multilayer Perceptron?

Hello, I have a serialized Multilayer Perceptron trained using weka. I would like to use R to re-evaluate the model. How can I do this? I could not find an example of RWeca that applies to Multilayer Perceptron. Thanks, Rui __ R-help@r-project.org

[R] RWeka and Back Propagation NN

Hello, I have a trained Back Propagation Neural Network model in weka. I would like to re-evaluate the NN using R with a given input. How can I do this? I could not find an example of RWeca that applies to NN Thanks, Rui __ R-help@r-project.org

[R] Help with

Hi, I downloaded a dataset from UCI repositories named Bag of Words: http://archive.ics.uci.edu/ml/machine-learning-databases/bag-of-words/readme.txt The dataset is in a text file with the following structure: --- docID1 wordID1 count docID1 wordID2 count docID1 wordID3 count docID1 wordID4

[R] Is there any R function for data normalization?

Hello, I have a matrix with values, with columns c1..cn. I need the values to be normalized between 0 and 1 by column. Therefor, the 0 should correspond to the minimum value in the column c1 and 1 should correspond to the maximum value in the column c1. The remaining columns should be organized

[R] lapply with different size lists?

Hello, I have 2 functions (a and b) a = function(n) { matrix (runif(n*2,0.0,1), n) } b = function (m, matrix) { n=nrow (matrix) p=ceiling (n/m) lapply (1:p, function (l,n,m) { inf = ((l-1)*m)+1 if (lp)

[R] What is tthe meaning of Ncells and Vcells?

Hello, When I do gc() I got this return: gc() used (Mb) gc trigger (Mb) max used(Mb) Ncells 288952 15.5 968217 51.8 381338927 20365.7 Vcells 57781947 440.9 180578758 1377.8 551082632 4204.5 What does actually means Ncells, Vcells, used and gc trigger? Thanks, Rui

[R] Does anyone knows a KMeans ++ package for R?

Dear all. I am searching for KMeans ++ for R. I cannot find it. Do you know any package with it? Best regards, Rui __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

Re: [R] Does anyone knows a KMeans ++ package for R?

of avoiding the sometimes poor clusterings found by the standard k-means algorithm. On Wed, Feb 29, 2012 at 11:33 AM, Pascal Oettli oet...@eps.s.u-tokyo.ac.jp wrote: Dear Rui, What ++ means?  There is kmeans in stats package. Best Regards, Pascal Le 29/02/2012 19:20, Rui Esteves a écrit

Re: [R] Error: unexpected '' in when modifying existing functions

Thank you both. 1) As Duncan said, if I leave environment: namespace:stats out, it will not work since it is using .C and .Fortran functions that kmeans calls. I 2) don`t know how to use the as.environment() (I did not understood by reading the help). 3) Setting environment(kmeansnew) -

Re: [R] Error: unexpected '' in when modifying existing functions

would just leave environment: namespace:stats out. On Sat, Jan 14, 2012 at 11:50 AM, Duncan Murdoch murdoch.dun...@gmail.com wrote: On 12-01-14 3:58 AM, Rui Esteves wrote: Thank you both. 1) As Duncan said, if I leaveenvironment: namespace:stats  out, it will not work since it is using .C

[R] how to find the number of iterations kmeans used to converge?

Dear all, I need to know in which number of iterations the kmeans converge each time I run it. Any idea how to do it? Thank you for your attention, Rui __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read

[R] Error: unexpected '' in when modifying existing functions

Hi. I am trying to modify kmeans function. It seems that is failing something obvious with the workspace. I am a newbie and here is my code: myk = function (x, centers, iter.max = 10, nstart = 1, algorithm = c(Hartigan-Wong, + Lloyd, Forgy, MacQueen)) + { + do_one - function(nmeth) { +

[R] Max value of an integer

Hi. Is there any constant that represents the maximum value of an integer? If I need to setup by myself what is the maximum value? Best, Rui __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting

[R] (no subject)

Hello. I have this matrix: cy[,1] [,2] [,3] [,4] [,5] [,6] [1,] 1.000 1.000 -0.5164570 -0.5164087 -0.4004139 -0.4003719 [2,] 1.000 1.000 -0.5164570 -0.5164087 -0.4004139 -0.4003719 [3,] -0.5164570 -0.5164570 1.000 1.000

[R] Kmeans with hamming distance?

Hello, I need to do kmeans clustering with hamming distance instead of the euclidean. The kmeans function only uses euclidean. How can I do it? Thank you Rui [[alternative HTML version deleted]] __ R-help@r-project.org mailing list

[R] Where can I find cmeans {e1071} package?

Hello, I need a Fuzzy C Means algorithm. I found some documentation about cmeans {e1071} at http://rss.acs.unt.edu/Rdoc/library/e1071/html/cmeans.html Does someone knows where I can find it? Thank you Rui [[alternative HTML version deleted]]

[R] How to cancel a R function in the command line?

Hi, This question seems very basic but I cannot find an answer on google. I have a R session on a linux command line. I called a function that is taking ages. I want to cancel the function but without killing the R session. What is the shortcut? Thanks, Rui [[alternative HTML version

Re: [R] How to cancel a R function in the command line?

, Tsjerk On Oct 20, 2011 7:16 PM, Rui Esteves ruimax...@gmail.com wrote: Hi, This question seems very basic but I cannot find an answer on google. I have a R session on a linux command line. I called a function that is taking ages. I want to cancel the function but without killing the R session

Re: [R] How to cancel a R function in the command line?

I found it. It is ctr shift c Rui On Thu, Oct 20, 2011 at 7:22 PM, Rui Esteves ruimax...@gmail.com wrote: Hi Tsjerk, In my command line it does not. Maybe it because I am using linux. That is my problem. Thank you for answering, Rui On Thu, Oct 20, 2011 at 7:18 PM, Tsjerk Wassenaar

[R] Foreach (doMC)

Hello, I am trying to run a small example with foreach, but I am having some problems. Here is the code: *library(doMC) registerDoMC() zappa = list() frank = list() foreach (i = 1:4) %dopar% { zappa[[i]] = kmeans (iris[-5],4) frank[[i]] = warnings() }* The code runs without error. However