similar to: Running R at a specific time - alternative to Sys.sleep() ?

Dear R-help, I want to download the text from a web page, however what i end up with is the html code. Is there some option that i am missing in the RCurl package? Or is there another way to achieve this? This is the code i am using: > library(RCurl) > my.url <- 'https://stat.ethz.ch/mailman/listinfo/r-help' > html.file <- getURI(my.url, ssl.verifyhost = FALSE,

Dear R-help, The following code downloads an html document into variable 'doc' and then stores an internal representation into variable 'html.tree'. Even if the html code is malformed, this still works which is fantastic. However, as in the example below, i do get some ouput from R in the console which i would like to suppress somehow, so i can keep my window a bit cleaner. I

Dear R-Help, I need to convert a set of '.pdf' files into an equivalent set of '.txt' files. This is so that i can do some text mining on the content. In the latest R-News letter (http://cran.r-project.org/doc/Rnews/ Rnews_2008-2.pdf), the package 'tm' for text mining is mentioned. In that lovely package, there is a function called 'readPDF()'. In order to use

Dear all Lets say I have a plain text file as follows: > cat(c("[ID: 001 ] [Writer: Steven Moffat ] [Rating: 8.9 ] Doctor Who", + "[ID: 002 ] [Writer: Joss Whedon ] [Rating: 8.8 ] Buffy", + "[ID: 003 ] [Writer: J. Michael Straczynski ] [Rating: 7.4 ] Babylon [5]"), + sep = "\n", file = "tmp.txt") I would somehow like to read

Dear all, I'm having a problem understanding why a split does not occur with in the 2nd use of the function strsplit below: # text strings > txt <- c("sales to 23 August 2008 published 29 August", + "sales to 6 September 2008 published?11 September") # first use > strsplit(txt, 'published', fixed=TRUE) [[1]] [1] "sales to 23 August 2008 "

Dear all, Lets say I have the following data frame: > df1 <- data.frame(Show=c('Star Trek', 'Babylon 5', 'Dr Who'), Size=c(0.7, 0.0, 0.701), Date=as.Date(c('2007-08-03', '2007-08-03', '2007-08-03'), format='%Y-%m-%d')) > df2 <- data.frame(Show=c('Star Trek', 'Dr Who', 'Torchwood'), Size=c(0.8, 0.85,

Hi all, I was just radomly playing with R and got the following error when trying to filter a data frame using a string: > Angel <- c(7,8,6,9,10) > Buffy <- c(8,9,4,9,10) > Firefly <- c(9,9,10,10,10) > DrHorrible <- c(10,9,9,10,10) > my.df <- data.frame(Angel, Buffy, Firefly, DrHorrible) > my.df["DrHorrible"] DrHorrible 1 10 2 9 3

Dear all, Lets say I have the following data frame: > set.seed(1) > col1 <- c(rep('happy',9), rep('sad', 9)) > col2 <- rep(c(rep('alpha', 3), rep('beta', 3), rep('gamma', 3)),2) > dates <- as.Date(rep(c('2009-10-13', '2009-10-14', '2009-10-15'),6)) > score=rnorm(18, 10, 3) > df1<-data.frame(col1=col1,

Dear R-help, There seems to be a web page I am unable to download using RCurl. I don't understand why it won't download: > library(RCurl) > my.url <- "http://www.nytimes.com/2009/01/07/technology/business-computing/07program.html?_r=2" > getURL(my.url) [1] "" Other web pages are ok to download but this is the first time I have been unable to download a

Related to the following question on Stackoverflow: https://stackoverflow.com/questions/44723690/unexpected-behavior-of-sys-setlocale#44723690 It appears as if Sys.setlocale() does not update LC_TIME correctly for use in date formatting. Although R reports that LC_TIME is changed to the new setting after use of Sys.setlocale(), as.Date() still uses the old settings. The only way to update this is

Dear all, I am having a problem downloading webpages through R when i run it in the DOS window under Windows Vista Basic. I have downloaded the batchfiles from http://code.google.com/p/batchfiles/ and have successfully set the PATH. I open up 'Command Prompt' in Vista and type (after the C:\...> stuff): ### START ### C:\Users\Karen>Rscript -e "library(RCurl);

Dear all, Objective: I am trying to learn about neural networks. I want to see if i can train an artificial neural network model to discriminate between spam and nonspam emails. Problem: I created my own model (example 1 below) and got an error of about 7.7%. I created the same model using the Rattle package (example 2 below, based on rattles log script) and got a much better error of about

Is it on purpose that `[[` strips the names when used on an atomic vector? > c(a=1, b=2)[1] a 1 > c(a=1, b=2)[[1]] [1] 1 > sessionInfo() R Under development (unstable) (2013-02-11 r61902) Platform: x86_64-w64-mingw32/x64 (64-bit) locale: [1] LC_COLLATE=English_United Kingdom.1252 [2] LC_CTYPE=English_United Kingdom.1252 [3] LC_MONETARY=English_United Kingdom.1252 [4] LC_NUMERIC=C

Dear all, Lets say I have several data frames as follows: > set.seed(42) > dates <- as.Date(c("2010-01-19", "2010-01-20")) > times <- c("09:30:00", "11:30:00", "13:30:00", "15:30:00") > shows <- c("Red Dwarf", "Being Human", "Doctor Who") > > df1 <- data.frame(Date = dates[1],

Dear R developers, ?help.search ...opens a tab in my browser (Firefox 3.5.6, Win XP): http://127.0.0.1:31642/library/utils/html/help.search.html When I click on the link for "?", (http://127.0.0.1:31642/library/utils/help/?) in the last line of "Details", I get an error message: "Server error: invalid response from R". Similarly, The link to "??"

Dear all, I'm calling Winbugs (1.4.3) through R2WinBugs (2.1-18 coda_0.14-7) to fit a switching random walk model, but come up with an instant trap with the log only displaying 'check('. I will paste the trap with session info below; I'd be very grateful for any ideas. Couple of leads: 1. I presume the problem relates to the r package itself or the way I call bugs(), because I

Dear R-developers, A student asked me today of how to specify the limits of the x-axis. I knew that he should use xlim, but I tried to encourage him to have a try himself with the various help functions. I do not judge if he used the correct search strategy or right key words, but anyway here is what he tried: he looked at ?plot. There xlim is not mentioned. He checked ?par. There you find

Hello All, i was trying to simply run the readHTMLTable on the example published in the package. And on a page I was working on. So running: u = "http://en.wikipedia.org/wiki/List_of_countries_by_population" tables = readHTMLTable(u) returns the following error: Error in tb[["thead"]] : subscript out of bounds looking up this error on the web, didnt give me any hint. Is

Hi, I have the following function that I want to apply to a list of 14 matrices (1536 x 170) of binary data: DRes <- function(x, nr = 10000, metric = "mixed", ...) { require(analogue) require(ade4) m <- c() for (i in 1:nr) { set.seed(i) x1 <- x[, sample(dimnames(x)[[2]], length(x[1,])/2)] x2 <- x[, !dimnames(x)[[2]] %in% dimnames(x1)[[2]]] d1 <-

Hello, I came across a strange behavior of expand.grid (or at least strange to me). For certain values of one of my input variables - created by seq() - I have to use strings (e.g ==".6") to select a row of the object created by expand.grid(), for other values numerical (e.g. ==.8) and for some both work. Please find an example below. #Example x<- seq(0,1,1/10) y <-