Re: [R] test if a url exists

On 29/06/2014, 7:12 AM, Hui Du wrote: > Hi all, > > I need to test if a url exists. I used url.exists() in RCurl package > > library(RCurl) > > however the test result is kind of weird. For example, > >> url.exists("http://www.amazon.com";) > [1] FALSE > > although www.amazon.com

[R] test if a url exists

Hi all, I need to test if a url exists. I used url.exists() in RCurl package library(RCurl) however the test result is kind of weird. For example, > url.exists("http://www.amazon.com";) [1] FALSE although www.amazon.com is a valid url. Does anybody know how to use that

Re: [R] Marginal Effects for Hurdle (Two-part) models in R

On Thu, 26 Jun 2014, Ashutosh Arun wrote: I am very new to R. I am using R package "pscl" for hurdle regression (Binary with "cloglog" link and Poisson with "log" link). My problem is to model road crash frequencies at given locations as a function of road geometry and surface condition. All o

Re: [R] quartz() and windows()

Dear Megersa , > Which version of R is used for quartz function please? > Quartz is the Apple Mac graphics window (device). On Windows use ... windows() Best wishes, Franklin Bretschneider Dept of Biology Utrecht University brets...@xs4all.nl __

Re: [R] quartz() and windows()

Which version of R is used for quartz function please? [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-gu

Re: [R] ggplot2 - change title and size of legends - time series.

Hi all Thanks to Dennis Murphy I got an answer to my question. I am posting below a modified version of my script that might be of some help to other ggplot2 users. Many thanks Ed library(ggplot2); library(gridExtra) require(timeDate) require(reshape2) ind <- seq(1,1000) modelnames <- c("PR

Re: [R] Data Frame Members

On Jun 27, 2014, at 5:53 AM, Robert Sherry wrote: Suppose that a data frame has been created by the user. Perhaps it has been created using the library quantmod. Is there any command to find out what the members of the data frame is? Most of the objects created by quantmod functions are n

[R] Réponse automatique

Bonjour, Je suis absent jusqu'au 4 août prochain. En cas d'urgence, merci de contacter Francis Meunier, directeur-adjoint : f.meunier - at - conservatoirepicardie.org J. Boutet > From: r-help-requ...@r-project.org > Subject: R-help Digest, Vol 136, Issue 28 > Date: Sat, 28 Jun 2014 12:0

[R] [R-pkgs] sampleSelection 1.0 released

Dear All The recently released version of the sampleSelection package [1] has the version number 1.0, because we consider the package now to be mature and feature-complete. Compared to version 0.6 of the sampleSelection package (which is described in an article in the Journal of Statistical Softwa