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Is there any (list.files)-like function that sorts the files by (modification) date? Alberto Monteiro

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Is there any heteroskedasticity test in the package? Something that would flag a sample like x <- c(rnorm(1000), rnorm(1000, 0, 1.2)) Alberto Monteiro

Please ignore the last test case. I thought I had saved it, but I hadn't, sheet = 2 was empty. Now it works. Alberto Monteiro

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As a big fan of Wikipedia, it's frustrating to see how little there is about R in the correlated project, the Wikibooks: http://en.wikibooks.org/wiki/R_Programming Alberto Monteiro

Dirk Eddelbuettel wrote: > >> My question: is there any way to integrate the plot part into >> a tcltk window? > > Are you aware of the tkrplot package on CRAN ? > No. Alberto Monteiro

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This must be a stupid question, but is there any "extension" of get? For example: x <- 10 get("x") # gives me 10 get("x^2") # gives me an error Alberto Monteiro

Is there any function that divides a sample into N quantiles? For example, for N = 2, this would be the solution: x <- rnorm(100) m <- median(x) q <- ifelse(x <= median, 1, 2) Alberto Monteiro

Bert Gunter wrote: > > Yes. And, amazingly, one can find out about it by typing > > help.search("t distribution") . > > Why don't you try it for yourself? > Maybe because the obvious search is help.search("t") :-) Alberto Monteiro

Is there any function to write a XML structure, after it was read using xmlTreeParse? Ex: library(XML) x <- xmlTreeParse("Irpf2008/aplicacao/dados/12345678901/12345678901.xml") # write it... Alberto Monteiro PS: please, brazilians, don't be offended by my foul...

Kaustubh Patil wrote: > > Is it possible to get unordered eigenvalues and eigenvectors of a > symmetric matrix in R? > Yes, see help("eigen"). If you are strict about the unordered part, do a sample(set, size) to randomize the eigenvalues. Alberto...

The Runuran package includes a simulation for the Triangular Distribution, urtriang. But I didn't find an analogue of the q* functions (rnorm - qnorm, runif - qunif), that would invert the CDF (?uqtriang). Are there any such functions? Alberto Monteiro

Pete Cap wrote: > > I'm writing a tcl/tk gui tool to wrap around RMySQL for some co-workers. > Good luck; I find the documentation on the library(tcltk) very poor, lacking examples for most of the functions. Alberto Monteiro

Dimitris Rizopoulos wrote: > > 513 %/% 100 > > 513 %% 100 > Now this is a great opportunity to improve the R-Wiki. What about a "Pascal" page in the R-Wiki, where a list of Pascal-to-R translations would be available? Alberto Monteiro

Does anybody know how to deffine in the test tukeyHSD the pairs of comparison that you want to get? It is throw the lmat commnad, but I don't know the correct usage... Thanks a lot! Jos? -- MSc Jos? Alberto...

Robin Hankin wrote: > > If iterative methods are appropriate, > it's perhaps worth pointing out that Newton-Rapheson > works nicely for complex functions. > Hmmm... I think there are many cases where Newton-Raphson diverges for complex functions, like those that generate...

Prof Brian Ripley wrote: > > Read ?par and the descriptiuon in 'An Introduction to R'. "din", > "fin", "mai", "omi", "pin" and "usr" are relevant. > Is there any hope that, instead of fin, din, pin, etc someday we will have fmm, dmm...

Martin C. Martin wrote: > > In the Linux (FC3) version of R, ctrl-\ quits R. This wouldn't be > so bad, but on my keyboard, it's right next to ctrl-p and I tend to > hit it by accident. > And...