similar to: iterating over files in a directory with R

Hello, Is there anyone who could give me an example of how to import an ascii grid (i.e. ArcGIS exported raster) into R. I want to use it with gstat but don't know the appropriate import routine. Thanks very much for your help. Regards, femke Femke Reitsma Graduate Student (ABD) Geography Department 2181 LeFrak Hall University of Maryland College Park, MD 20742 Phone: 301-405-4121

Dear R-help list, I'm trying to overlay a number of data objects in a plot. Following an earlier example on the list I've created an empty plot as follows > xlim <- range(as.numeric(c("0","10000"))) > ylim <- range(as.numeric(c("0","25")) ) > plot(NA, xlim=xlim, ylim=ylim, xlab="distance", ylab="semivariance")

Greetings List, I'm having some trouble with the use of the names function in a formula. Below is an example of something that works (i.e first line), and the second line is the same formula which doesn't. I want to be able to reference the column of the dataC table so I can run the variogram iteratively with a loop. > v<-variogram(A1~1,loc=~x+y, dataC) >

Hello, Could someone please tell if there is a way to append header info to the top of an exported dataframe (exported with write.table). I want to append the following, which are the defininitions for an asciigrid: ncols 532 nrows 999 xllcorner 510465 yllcorner 4766375 cellsize 30 NODATA_value -9999 Thanks very much, femke [[alternative HTML version deleted]]

Dear R helpers,   Suppose I am dealing with no of interest rates at a time and the no of interest rates I am selecting for my analysis is random i.e. it can be 2, can be 10 or even higher. The R-code I had written (with the guidance of R helpers obviously and I am really grateful to all of you) as of now is sort of hard coding when it comes to reading interest rates as an input e.g.   ## INPUT  

Greetings! I''m new to Ajax and am trying to get a basic app working as a vehicle for learning it. The app is an extension of the cookbook tutorial. My intent is to be able to add a list of ingredients for a recipe. The page to add ingredients uses Ajax. As ingredients are added to the page they''re displayed in a "green-bar" format like that used in the Depot

how to iterate two elements each through for loop? e.g. x<-c(1,2,4,7,34,6) y<-c(3,5,6,9,34,7) for(z in x){ print(paste(z,y)) } i want both element of vector iterate serially with same position -- View this message in context: http://r.789695.n4.nabble.com/iterating-through-for-loop-tp4354101p4354101.html Sent from the R help mailing list archive at Nabble.com.

I need to get the names of the list elements when I iterate over a list. I'm wondering how to do so? alist=list(a=c(1,3),b=c(-1,3),c=c(-2,1)) sapply(alist,function(x){ #need to use the name of x for some subsequent process })

I want to do the following declare variable: $usernames = [ "chris", "bob", "tim" ] How would I iterate over it to create something like: user { "$username": home => "/home/$username", } Also is it possible to create a more complex structure with $UID and $Shell I''m thinking of something like this: $users

Hi, I try to iterate over all uses of a Function with the following code (simplified): for (Value::use_iterator UI = F->use_begin(), UE = F->use_end(); UI != UE; ++UI) { if (CallInst* I = dyn_cast<CallInst>(*UI)) { // do something interesting } } This works on Linux, but on Windows the dyn_cast fails, even though the only use of F in that

Hi all, I have a bunch of int vectors. Each vector holds a bunch of ints that correspond to row numbers of an existing matrix. I use the int vectors to pull out rows of data from a matrix, i.e. data <- my_matrix[int_vector,] I would like to store these int vectors in some sort of data structure that will preserve them as-is and allow iteration. I guess what I'm looking for would be

I am attempting to iterate over a file, processing it line by line. In my function below, I am only getting the first item over and over and over again from my test file rather than subsequent lines. How can I modify this to read lines sequentially? == iteratefile <- function(file) { f.con <- file(file) on.exit(close(f.con)) while( length(readln <- readLines(f.con, 1)) > 0 ) {

Hi All, I have a slight issue getting R to plot a series of tables automatically. Essentially I have a series of tables that I wish to plot. They are named on_2, on_3 etc. based on the file name when they were read in. I have filelist <- list.files() to give me list of the table names. I wish to plot each table, so I was thinking along some kind of for loop as below: for (i in 1:Number_Files)

I have a controller that gets a list of employees (which has an "include => [:salaries, :incentives, :billablegoals, :reviews]"). I then need it to iterate through each employee and determine their current active goal based on the "effective date." After playing around with it a bunch, I got the following to work. Only problem is that if I remove the "@employees.each {

HI all, efficiency question for VERY low bandwith networks Suppose I know the list of files that are changed What is the most efficient way to make rsync sync this list. Currently I use --include-from --exclude to generate a 'filelist' but I suspect that client and/or server exchange the list of files in the module to be synced. this traffic can be avoided since the include-from

Since `for' loops are slow in R, and since `apply' functions are faster, I was wondering whether there were a way to use an apply function?or to otherwise avoid using a loop?when iterating over a statement that updates its input. For example, here's some such code: r.seq <- 2 * (1 / d$Dt[1] - 1) for (i in 2:nrow(d)) { rf <- uniroot(bdt.deviation, interval=c(0, 1),

Dear R folks, wanting to compare different implementations of a solution I want to script it to iterate over the different implementations. Is there a way to do this in the R shell/command line? $ more /tmp/iterf.r f1 <- function(n = 100000, l = 100000) { z = n + l } f2 <- function(n = 100000,

I'm writing R code to calculate Hierarchical Social Entropy, a diversity index that Tucker Balch proposed. One article on this was published in Autonomous Robots in 2000. You can find that and others through his web page at Georgia Tech. http://www.cc.gatech.edu/~tucker/index2.html While I work on this, I realize (again) that I'm a C programmer masquerading in R, and its really

following AWDWR book - ''Partials and Collections'' (rather sparse info there too) and I might add that the wiki page on this topic is entirely devoid of any info...be that as it may... I have hash of several arrays that I want to iterate though and display. the first hashed element looks like this (greatly simplified) - :facility: !ruby/object:Facility attributes:

What is the error? I assume you know that with that syntax the filelist.txt is local rather than remote. On 12/20/23 09:50, Alex via rsync wrote: > Hi, I've been using rsync on fedora over ssh to sync directories for > decades, but suddenly having a problem with transferring multiple files > at a time to one specific host using --files-from. I can't think of what > might