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...------------------------------------------------------------------------------------------------------------ Sender: r-help-bounces@r-project.org  On-Behalf-Of: pburns@pburns.seanet.com  Subject: Re: [R] VEC Operator in R Message-Id: <4900C171.1090103@pburns.seanet.com > Recipient: nalbicelli@tricadiacdpcmanagement.com  -------------------------------------------------------- ender: r-help-bounces@r-project.org  On-Behalf-Of: ggrothendieck@gmail.com  Subject: Re: [R] VEC Operator in R Message-Id: <971536df0810231134l7e1a7871g8791a001f6d7c4b@mail.gmail.com > Recipient: ngottlieb@marinercapital.com...

Using R 2.6.2, say I have the following list of lists, "comb": data1 <- list(a = 1, b = 2, c = 3) data2 <- list(a = 4, b = 5, c = 6) data3 <- list(a = 3, b = 6, c = 9) comb <- list(data1 = data1, data2 = data2, data3 = data3) So that all names for the lowest level list are common. How can I most efficiently access all of the sublist items "a" indexed by the outer

Can anyone please tell whether there is any R function to act as "VEC" and "VECH" operator on Matrix? Yes of course, I can write a user-defined-function for that or else, I can put dim(mat) <- NULL. However I am looking for some R function. Your help will be highly appreciated. Regards, -- View this message in context:

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Good Morning, I am using xyplot to show two variables for a large number of subjects. Currently I am using xyplot(y~x|as.factor(ID), layout=c(7,9)) to give me a little plot of the x and y factors for each ID. The purpose of the plot is to let the PI quickly look through the data for irregularities. The good news is that they like the layout of the xyplot, but they don't want to have to

I know, this is a forum about R. But I am so desperate of this problem (BTW, anyone knows any good Statistics/Math forum to post question like this?): A and B are both n x n positive definite matrix. Denote A > B, if A - B is positive definite. I know this is true: if A > B, then A^{-1} < B^{-1}. But how to prove this? I tried to diagonalize A and B, but since they can have different

odfWeave is throwing up a cryptic error, after successfully processing a file with a large number of figures (~30) and many \Sexpr{} calls. The error is (at least to me) cryptic. I am not sure where to look to correct this problem. Here's the error: Post-processing the contents Error in .Call("RS_XML_Parse", file, handlers, endElementHandlers, as.logical(addContext), :

hello R users, I didn't find a solution for a special problem. I have two dataframes. dataframe1: X value row col ID 1 8.973498062 5512625 3460000 1 2 11.656658570 5501625 3464000 2 3 11.121777570 5495625 3473000 3 4 9.310465964 5508625 3477000 4 5 8.883483845 5515625 3496000 5 dataframe2: X value

Hello, I want to add text annotation about correlation on "pairs" plots. I found that I could pass a function to the "panel" argument of pairs : panel.annot <- function(x, y, ...) { points(x, y, ...) c <- cor.test(x, y) legend("topleft", legend=substitute(rho == r, list(r=sprintf("%.2f", c$estimate))), bty="n") } And then :

This might not be the correct forum for this question for there might be some flaws in my logic so the R function I'm looking for might not be the correct, but I know there?s a lot of smart people in this forum so please correct me if I'm wrong. I have been googling and searching in this forum for something useful but so far I'm out of luck. This is the background to my problem. I