similar to: system.time question

Hi everybody, I noticed a strange behavior when using loops versus apply() on a data frame. The example below "explicitly" computes a distance matrix given a dataset. When the dataset is a matrix, everything works fine. But when the dataset is a data.frame, the dist.for function written using nested loops will take a lot longer than the dist.apply ######## USING FOR ####### dist.for

Yesterday I changed the headers for a couple of columns in data text files and removed hyphens from within character strings, too. When I tried to re-read these data sources using read.table() I encountered an issue I've not before seen. Both files were read almost instantly until yesterday's wording changes. Now both files seem to cause R to hang. Rather than having the prompt

I need an analogue of "uniq -c" for a data frame. xtabs(), although dog slow, would have footed the bill nicely: --8<---------------cut here---------------start------------->8--- > x <- data.frame(a=1:32,b=1:32,c=1:32,d=1:32,e=1:32) > system.time(subset(as.data.frame(xtabs( ~. , x )), Freq != 0 )) user system elapsed 12.788 4.288 17.224 --8<---------------cut

Hello, I've noticed firefox got randomly stuck, and as sometimes that leads to a complete system lock-up, I've checked dmesg and got this: [Jan29 10:49] nouveau 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes) [ +0.000033] swiotlb: coherent allocation failed for device 0000:01:00.0 size=2097152 [ +0.000004] CPU: 6 PID: 1023 Comm: Xorg Not tainted 4.15.0-rc8 #1 [ +0.000003]

Hi, all. I began to migrate my R codes from Windows to Linux and surprised me with an old question. I simplified the problem and made a little test to compare times at same computer and the Linux time is worse (not so little) than Windows time: 28 vs 53 seconds. I make an example (below) to facilitate all to see the difference. I also build from source (it's my first time) a version of R to

On Wed, Jan 31, 2018 at 9:20 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote: > Yeah, a lot of people were getting that, as a result of some drm/ttm > hugepage usage. > > Christian, did a fix ever end up going out? If so, what kernel was it > included in? https://lkml.org/lkml/2018/1/16/106 Alex > > -ilia > > On Wed, Jan 31, 2018 at 11:05 AM, Ricardo Nabinger

Hello, Is it possible to create a custom template for XCP? Or edit an existing one? I know that I could create a VM and then exported as a template, but I would prefer to create a template like "Debian Lenny 5.0" that install debian from the network but with 64bits instead of the 32bits used by the template. -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de

Hello, Can you check following entrys: Old: disk = [''phy:vm_volumes/root.dhcp1,sda1,w'', ''phy:vm_volumes/var.dhcp1,sda2,w'', ''phy:vm_volumes/swap.dhcp1,sda3,w''] New: disk = [''phy:/vm_volumes/root.dhcp1,sda1,w'', ''phy:/vm_volumes/var.dhcp1,sda2,w'',

Hello, I'm having a problem with LMTP in a proxy server since I upgraded from 2.1.16 to 2.2.28. In my logs I have: Apr 26 12:54:17 musio12 dovecot: lmtp(2082): Fatal: master: service(lmtp): child 2082 killed with signal 11 (core dumped). As far as I could check the message is delivered in a later connection. I have enabled core dumped files, but how could I debug it? -- Angel L.

Estimado Jesús Para Fernández En teoría es ese material, lo vi muy rápido y en la parte genética tiene cosas que biológicamente no son así, hay un libro de Falconer, Introducción a la genética cuantitativa, que tiene escrita la parte matemática, hay un abismo entre la biología y los ingenieros que se inspiran en la biología. Yo pensaba en la resolución de un problema real, aunque relativamente

Hello, What is the best way of solving this problem? answer <- ifelse(tf=TRUE, i * 5, previous answer) where as an initial condition tf[1] <- TRUE For example if, tf <- c(T,F,F,F,T,T,F) over i = 1 to 7 then the output of the function will be answer = 5 5 5 5 25 30 30 Thank you. Phil,

OK. Another amateur question. I have a list with attributes on pine trees, like the stem's location, a logical value set to T if it's alive, some parameters for growth, diameter, etc. The tree list has another list in it which is a new data type for me. I want to make a new list that retains all the live trees. That is where Living == T. Here's the summary of the list: >

Hi all, I am trying to filter the element of a df that start with "TF", like this: alfa = c(123221,"TF13124",41243,"TF1234",32414,"TF13124","TF14333",2134123,"TF1234") beta =

Dear R users, please can you help me understand the behaviour of abline using function lm. I'm trying to learn linearity over groups. So I make three groups with 10 values each: test=data.frame(cbind( l=c(rnorm(10,0,30),rnorm(10,100,30),rnorm(10,200,30)), t = c(rep(0,10), rep(1,10), rep(2,10)) )) when I do: plot(test$l~test$t) abline(lm(test$l~test$t)) the abline is a straight line

Hello, I've noticed that dget() is much slower in the current and devel R versions than in previous versions. In 2.15 reading a 10000-row data.frame takes less than half a second: > (which.r <- R.Version()$version.string) [1] "R version 2.15.2 (2012-10-26)" > x <- data.frame(matrix(sample(letters, 100000, replace = TRUE), ncol = 10)) > dput(x, which.r) >

This is a not too old R-devel on Linux, it already fails in R 3.4.4, and on macOS as well. The tar file seems valid, external tar can untar it, so maybe an untar() bug. setwd(tempdir()) dir.create("pkg") cat("foobar\n", file = file.path("pkg", "NAMESPACE")) cat("this: that\n", file = file.path("pkg", "DESCRIPTION"))

According to the Assembly language reference: "In LLVM, opaque types can eventually be resolved to any type (not just a structure type)." But the only way I can think of to do so is to give it a type name, then later redeclare the name. But that gives an error: %TO = type opaque %TF = type i32 ( %TO* ) %TO = type %TF gives: $ llvm-as types1.ll llvm-as: types1.ll:3:1: error:

Hi, I have a data frame with two columns: dt and tf. The dt column is datetime and the tf column is a temperature. dt tf 1 2009-06-20 00:53:00 73 2 2009-06-20 01:08:00 73 3 2009-06-20 01:44:00 72 4 2009-06-20 01:53:00 71 5 2009-06-20 02:07:00 72 ... I need a subset of the rows where the minutes are 53. The hour is immaterial. I can not find a wildcard

Hi, I know that there are some variables (as user or username) I could use inside dovecot. They are at https://wiki2.dovecot.org/Variables. My question is if I can create my own variables from attributes at my pass/user db and then use it inside dovecot configuration. -- Angel L. Mateo Mart?nez Secci?n de Telem?tica ?rea de Tecnolog?as de la Informaci?n y las Comunicaciones Aplicadas

Hola, Acabo de calcular tf-idf y me surge una duda. ¿Habría un valor de idf o tf-idf que se considerara como umbral para establecer que una palabra es muy común o no? Los valores de idf en mis datos van entre 0 y 3.78 y los de tf-idf ente 0 y 0.07. Un saludo El Mar, 28 de Abril de 2020, 12:53, Carlos Ortega escribió: > Hola, > Yo de primeras los quitaría para qué otros topics aparecen.