similar to: Very slow read.table on Linux, compared to Win2000

From: Peter Dalgaard > > <davidek at zla-ryba.cz> writes: > > > Dear all, > > > > I read.table a 17MB tabulator separated table with 483 > > variables(mostly numeric) and 15000 observations into R. > This takes a > > few seconds with R 2.3.1 on windows 2000, but it takes > several minutes > > on my Linux machine. The linux machine is

Hello, is it possible to do something like DATA <- read.table(file="blabla.dat",subset=(sex=="male")), i.e. make R read only a subset of a csv file ? I think it would be useful in case of very big datasets, but I can't find such a feature. Thanks for an answer, David Vonka

Hello, I've just downloaded the R-2.2.1 source and I'm trying to compile it under cygwin (1.5.19-4). The configure script runs ok, but make generates the following error after a while: ---------------------------------------------------------------------------- ----- al/include -DHAVE_CONFIG_H -D__NO_MATH_INLINES -g -O2 -c zutil.c -o zutil.o rm -f libz.a ar cr libz.a adler32.o

Hello, I'm doing bootstrap in R 2.4.1 in order to compute standard errors of an estimator. I'm running the same program on 4 computers. The core of the program is a nlm minimization of a function, which is (I believe) nicely coded using (t)apply and all the vectorized stuff. I'm slightly puzzled by the differences in the speed of computation. The program works twice as fast on a

Hello I have the following problem : The dataframe TEST has multiple lines for a same person because : there are differents values of Nom or differents values of Prenom but the values of Matricule or Sexe or Date.de.naissance are the same. TEST <- structure(list(Matricule = c(66L, 67L, 67L, 68L, 89L, 90L, 90L, 91L, 108L, 108L, 108L), Nom = structure(c(1L, 2L, 2L, 4L, 8L, 5L, 6L, 9L, 3L, 3L,

I am new to R (ex SAS user) , and I cannot merge two data frames without getting duplicated rows in the results. How to avoid this happening without using the unique() function? 1. First data frame is called "tmv" with 6 variables and 239 rows: > tmv[1:10,] temps nom prenom sexe dist style 1 01:59:36 Cyr Steve H 45 free 2 02:09:55 Gosselin

Hi I would like to eliminate a large number of lines of the dataframe df1 The lines to delete are given here by the values of Mat (ex : 2,4,7,10). but I have a large number (300) values of Mat dput(df1) structure(list(Mat = c(1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 11,

Hi, poids taille fumeur sexe sport etat 85 184 oui homme 1 malade 65 175 oui homme 1 malade 74 180 oui homme 2 gueri 79 175 oui homme 2 malade 71 165 non homme 3 gueri 80 185 non homme 3 gueri 75 180 non homme 4 malade 69 155 non homme 4 malade 74 168 oui

Dear all, I am trying to understand the output from a binomial lmer object and why the scaling of a fixed effect changes the variance components. In the model p2rec is cbind(number recruits2,number recruits 1), Pop is populations (five level factor) and ja is year (covariate running from 1955-2004). I.e. biologically I am interested to see how the proportion of recruits from the second

Hello I have the following problem : group the lines of a dataframe when no information change (Matricule, Nom, Sexe, DateNaissance, Contrat, Pays) and when the value of Debut of lines i = value Fin of lines i-1 I can obtain it with a do loop. Is it possible to avoid the loop ? The dataframe initial is df1 dput(df1) structure(list(Matricule = c(1L, 1L, 1L, 6L, 6L, 6L, 6L, 6L, 6L, 8L, 8L, 8L,

(I'm afraid this post didn't reach the list on last Wednesday, here it is again ) hi R-list, And sorry for my frenglish ! I am running R < Good Sport > release ( i386-w64-mingw32/i386 (32-bit) ) ) under Windows 7 Professional, Service Pack 1. My perl executable is ActivePerl build 817 [257965] (i.e. version 5.8.8.817). Usually it is working fine. Using the gdata ::read.xls

Hi Marc, Thanks for your reply. On 18/07/2014 21:19, Marc Muehlfeld wrote: > Hello Fernando, > > Am 18.07.2014 20:14, schrieb Fernando Rodriguez: >> I am having a problem while demoting a DC. >> >> The DC i want to demotes is still online. When i try to use the command >> samba-tool domain demote this is the message i get: >> >> root at

Dear colleagues, I face a problem doing haplotype analyses with haplostats: when I use the haplo.em function, the programme gives an error message because of 'recursive default argument reference.' I am not able to figure out what this means. Could you perhaps help me? The full output is the following: > library(haplo.stats) >

SUBMISSION DEADLINE 8th International Conference on Cloud Computing and Services Science Submission Deadline: October 16, 2017 http://closer.scitevents.org/ March 19 - 21, 2018 Funchal, Madeira, Portugal. CLOSER is organized in 9 major tracks: - Services Science - Data as a Service - Cloud Operations - Edge Cloud and Fog Computing - Service Modelling and Analytics - Mobile Cloud

SUBMISSION DEADLINE 8th International Conference on Cloud Computing and Services Science Submission Deadline: October 30, 2017 http://closer.scitevents.org/ March 19 - 21, 2018 Funchal, Madeira, Portugal. CLOSER is organized in 9 major tracks: - Services Science - Data as a Service - Cloud Operations - Edge Cloud and Fog Computing - Service Modelling and Analytics - Mobile Cloud

SUBMISSION DEADLINE 8th International Conference on Cloud Computing and Services Science Submission Deadline: October 16, 2017 http://closer.scitevents.org/ March 19 - 21, 2018 Funchal, Madeira, Portugal. CLOSER is organized in 9 major tracks: - Services Science - Data as a Service - Cloud Operations - Edge Cloud and Fog Computing - Service Modelling and Analytics - Mobile Cloud

SUBMISSION DEADLINE 8th International Conference on Cloud Computing and Services Science Submission Deadline: October 30, 2017 http://closer.scitevents.org/ March 19 - 21, 2018 Funchal, Madeira, Portugal. CLOSER is organized in 9 major tracks: - Services Science - Data as a Service - Cloud Operations - Edge Cloud and Fog Computing - Service Modelling and Analytics - Mobile Cloud

Hello, In the following months, I am participating in the Google Summer of Code (GSoC). My project evolves around improving web streaming for open media formats and is mentored by Conrad Parker. The goal of the project is to write a FastCGI module that accepts ranged requests for smaller segments of media resources, using the liboggz library to perform the actual Ogg crunching. There are a lot of

First of all, thanks to everybody for R. I have written a program in C that requires some basic matrix operations, namely the following: - matrix multiplication and addition, - determinant and transpose, - inverse of a symmetric matrix. Since I am a happy R user I thought I could call R from within my program for this purpose. I read "Writing R Extensions" and "R Internals"

Hi, After trying too long I fixed the problem below by reverting to the old 3c905 NIC. Problem solved but not understood. I had a similar 3c2000 NIC in another Samba server and it also failed to copy a large amount (5000+) of files. So that's two completely servers (hardware and Samba / Slackware version) having the same problem with any number of different clients. I couldn't imagine