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Hi, I have about 900 files that I need to run the same R script on. I looked over the R Data Import/Export Manual and couldn't come up with a way to read in a sequence of files. The files all have unique names and are in the same directory. What I want to do is: 1) Create a list of the file names in the directory (this is really what I need help with) 2) For each item in the

Hi, I have a the code for a plot that works perfectly running in R and printing to a Quartz object but which doesn't work when I make the trellis device a pdf. The code is as follows: ---- trellis.device(device="pdf", new=TRUE) trellis.par.set(my.theme()) dotplot(Y ~ X | C, groups=G, data=D, layout=c(2,1), ... ) trellis.focus("panel", 1, 1) for (y in 1:5) {

Hi, I need to read in a series of text files with a time series on each row. The series are of different lengths and I'd like to just use the first row as the length and have R ignore extra values in rows that go over this length. For example: 1 0 3 4 5 1 3 5 6 8 7 7 2 1 1 1 4 7 7 7 So the 7s would be ignored and I would have a 5x3 matrix. I tried creating a series of colClasses

Hi, I have sets of three points provided by subjects that I want to graph as lines over a specific range, but the subjects were split into two groups and provided different points. The subjects provided a y-value for the given x-value, for example: Subject: 1 2 3 4 ... 127 "1" NA 3 2 NA ... "2" 4 NA

Hi, I recently added another 1,000 observations to a data frame I have for a total of 10,861 observations. Observations are by row and the frame has 15 columns. R now keeps converting certain columns to factors whenever I run regressions and can't seem to figure out the correct scaling for the axes of plots on its own. Are these problems the result of the size of my data frame or

Hello, This is a semi-complicated question about comparing two datasets, probably using merge, but I am open to other ideas. I have a large frame of information about companies.? It's over 30,000 rows and looks something like... df1 <- identifier1???? identifier2 name other_name year H34 C56 ACME ACME_LTD 2001 H34

I am using acf() to get the autocorrelations of a time series. It works but I want to then get the autocorrelations into a simple list of numbers. > x <- acf(price_changes, lag.max = 12,type = "correlation",plot = FALSE) > x Autocorrelations of series ‘price_changes’, by lag 0 1 2 3 4 5 6 7 8 9 10 11 12 1.000