similar to: Using a FOR LOOP to name objects

Hi guys, I am trying to replace all elements of earth that are equal to zero with their corresponding elements in mars. I can do the replace with a bunch of for-loops, but I don't think this is the R way of doing things. my_list <- list( earth=array(c(0,0,45,0,0,45,0,45),dim=c(2,2,2)), mars=array(c(8:1),dim=c(2,2,2))) my_list for (i in c(1:2)) { for (j in c(1:2)) {

i'm somehow embarrassed to even ask this, but is there any built-in method for doing this: my_list <- list() my_list[[1]] <- matrix(1:20, ncol = 5) my_list[[2]] <- matrix(20:1, ncol = 5) now, knowing that these matrices are identical in dimension, i'd like to unfold the list to a 2x4x5 (or some other permutation of the dim sizes) array. i know i can initialize the array, then

hi all -- this might not be the correct list for this question/discussion, though R-help didn't seem like the correct venue, either, so... i'm looking for just some extra clarification of how local variables are defined/bound, beyond the simple cases given in the Language document. the particular instance is when there is variable assignment inside a function. normally, this creates a

Hi all, As an R newbie, I wonder how I can store multiple matrices in a list() or vector() object without losing their structure. I should be able to retrieve the matrix from the list later on. If I just append() the matrices to a list() object, they automatically lose their dimensions, whereas I would like to preserve the dimensions of the matrices. Is there any function in R which allows

Dear R-devel, I am trying to do something similar to dynamic length lists in R, but at C level. In R, that would be rather trivial: - determine the length of the list - create the list object - store the values for each component - access value components by using "[[" At C level, for a single component where I need to store a vector of length 5, I do: int *p_result; SEXP my_list =

Hi, I''m creating a list of ingredients on a page. When the user clicks the ''Add Ingredient'' button a record gets added to the db and the ingredient gets added to the page. On the page, each record is represented by a <div> with three <span>s inside. One of the <span>s has a link_to_remote to ''delete'' the ingredient. When the link

dear all, a simple question, I need to write a function in which I retrive an undetermined number of vector in the function. I solved the problem thanks to this link http://stackoverflow.com/questions/2540232/how-to-allow-multiple-inputs-from-user-using-r so my function will look alike this my_fun <- function(...){ my_list <- lapply(..., function(x){x}) } I need just one more

I''ve been trying to get a handle on AJAX today and am ready to call "BUG!" I started with the code from Curt''s "AJAX on Rails". It used <ul="my_list"> and <li> and worked fine. Except I need a table instead of a list. So I did the simplest thing that I thought could possibly work. In the view, I changed the :position attribute from

Hi all, I''ve got a question concerning ListCtrl_virtual of wxRuby since I see no way filling the list with dynamic contents. I''m new to Ruby so I maybe have to apologise for my request. The problem is, that I have to define the on_get_item_text(item, col) function. There I would like to use the item and col variables to read data from a two-dimensional array. My very problem

Hi, I have a set of (x,y) coordinate pairs that are stored as a list > my_list $x [1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 $y [1] -8.0866819 -7.3876052 -6.6849311 -5.9837693 -5.2967432 -4.6525466 [7] -4.0999453 -3.6556190 -3.3076102 -3.0360780 -2.8220465 -2.6532085 [13] -2.5192816 -2.4086241 -2.3072977 -2.1969611 -2.0574250 -1.8737694 [19] -1.6357864

Buenas tardes, Quiero extraer datos de una web en la que ser relaciona la semana con la puntuación obtenida por un jugador. Ahora mismo llego a obtener elnodo en el que se relacionan la semana con la puntuación obtenida, pero no soy capaz de extraer esa informacion en una tabla de dos columna (semana, puntuacion) teniendo en cuenta que puede que haya semanas que no haya puntuado (en el ejemplo,

Hello, I am trying to understand why the FUNCTION used in several codes, won't create the object after it finishes running the code. For instance, look at the following: Number<- function(x) {MyNumberIs<-x} When I run Number(5) Everything goes well, except that if I try to call the object MyNumberIs, I won't find it. I understand that this function can assume many parameters,

It seems common to use RJS for quickly adding and highlighting a list that is having content added to it like this: http://rafb.net/paste/results/Z3m32g48.html ... where "my_list" would be an UL and the partial would insert a LI. Given that example, is there an easy way to highlight only the newly inserted LI instead of the whole UL? The only way I can see to do it is to give

You can use htmlTreeParse and xpathApply from the XML library. something like: xpathApply( htmlTreeParse("http://blabla", useInt=T), "//td", function(x) xmlValue(x)) should do it. Gamma wrote: > > anyone care to explain how to read a html table, it's streaming data > (updated every second) and i am looking for a suitable function. > > The imported html

I would like to track in which journals articles about a particular disease are being published. Creating a pubmed search is trivial. The search provides data but obviously not as an R dataframe. I can get the search to export the data as an xml feed and the xml package seems to be able to read it. xmlTreeParse("

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,

I''m doing a fotolog for a company. It''s expected to manage about 100k of connections per day and about 1500 concurrents connections. What hardware should I buy to manage those numbers of connections? I''m planning to use slackware + lighttpd + fastcgi, but perhaps we will have to reuse some scripts in php, in that case I would use slackware + apache + mod_php + fastcgi

Muchas gracias a ambos!!!! Las dos soluciones me han funcionado. Un saludo. El día 18 de enero de 2016, 18:35, Carlos Ortega <cof en qualityexcellence.es> escribió: > Hola, > > Pero, si ya casi lo tienes... te quedan un par de pasos y ya está... > > Simplemente tienes que transformar "puntos_nodo" a bien un data.frame aunque > quedará lleno de cosas que no te

Greetings, I am trying to get all of the text from a web page as if I "selected all" on the page, pasted into a text file, and then read in the text file with read.csv(). # this is the actual page I'm trying to acquire text from: web.pg <- readLines("http://www.airweb.org/?page=574") # then parsed in hopes of an easier structure to work with: web.pg <-

Hi List, I''m trying to get my ListCtrl to work. Currently I''ve managed to fill my ListCtrl with items, but I think it''s not the most beautiful way: class MyList < Wx::ListCtrl def initialize(parent, *args) super(parent, :style => Wx::LC_REPORT|LC_HRULES ) create_layout fill_list end def create_layout self.insert_column(0, "Name")