similar to: creating dll file

Hi I'm looking to a function in R equivalent to S-PLUS' "interp". Is there any implementation in R? If not, is there any similar interpolation function such that at the data points the interpolated values concides with the data? Thanks in advance P.J. Paulo Justiniano Ribeiro Jr Dept Maths & Stats - Fylde College Lancaster University Lancaster LA1 4YF - U.K.

I'd like to check within a whether an argument is a formulae of the type ~X or similar. What's the right way to do so? I'm using: is.language(obj) but not sure this is right Thanks in advance P.J. Paulo Justiniano Ribeiro Jr Dept Maths & Stats - Fylde College Lancaster University Lancaster LA1 4YF - U.K. e-mail: paulojus at est.ufpr.br http://www.maths.lancs.ac.uk/~ribeiro

After "image" and "persp" would it be interesting to als have contour as a generic function? Cheers Paulo Justiniano Ribeiro Jr Dept Maths & Stats - Fylde College Lancaster University Lancaster LA1 4YF - U.K. e-mail: Paulo.Ribeiro@est.ufpr.br http://www.maths.lancs.ac.uk/~ribeiro -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-

This depends whether you want to compile the packages yourself (here you need the extra tools) or just install the pre-compiled versions (here you don't need them). I would guess that most of the Windows users just do the latter and the installation is then straighforward by using the option "Packages" on the top menu. You can donload/install from CRAN or from a local zip file.

Hi When preparing documentation using Rd2dvi sometimes we get "overflow" on some lines. The consequence is that in the documentation there are some lines where words are not hyphenated or moved. The final document has some lines with more columns than the rest of the text. This happens when we use \code{} (which probably calls the \tt in latex). I've been checking the documentation

Hi I'm installing R with the standard commands: ./configure make make check make dvi to create DVI versions make pdf to create PDF versions make info to create info files make install make install-dvi make install-info make install-pdf Everything works fine apart from "make

Dear All, I am trying to do some simple mixture analyses. For instance, I have a sample of n observations and I suspect they come from two different exponential distributions with parameters rate1 and rate2, respectively. So, I want to estimate rate1, rate2, and the proportions of both kinds of individuals in the sample. I had a look at the packages mda and mclust, but they do not seem to do this

In an email to the help list John Chambers wrote about the function helpSilent which is in the methods package, pointing out that there is no restrictive reason to be in this package. I did not know about this function and just incorporate it in several functions of the geoR package where a much less elegant solution was being used. I guess other packages could use it as well. Therefore,

Dear R people We have two packages, where the first package (geoR) is required by the second (geoRglmm). Both packages have functions calling C-code via .C(). We would like to call C-functions included in the first package from within the C-code in the second package. Is this possible? An appropriate header file was included in the src directory of the second package but this alone did not

Hi all, I face the following problem. I have two variables x,y. I have also calculated the surface z. When I am drawing the surface with function >levelplot (in library lattice) everything is OK. I have the legend etc ... Then I am trying to plot x,y on the same graph. So I am doing : >points(x,y) But, the points are not in the correct position. They are a little bit shifted to the

Hello, I maintain a self-made R package under my own home directory "~/.R/library" on our university computer net (SunOS 5.8 system). After updating R to 1.8.0, I found other people cannot access my package any more. They got this error message: Error in library(tb, lib.loc = "/home/fs.hpc/43/zhengp1/.R/library") : This is not a valid package -- no DESCRIPTION exists I set

Hello all, Would anybody tell me how to present spatial-temoral point processes in R, for example, I'd like to plot the spatial points in the sequence of their time domain? Cheers -- Pingping Zheng Department of Mathematics and Statistics Fylde College Lancaster University Lancaster LA1 4YF UK

Suppose I have a nx2 matrix of data, X, the following code generate density estimation for each column and plot them denlist <- apply(X, 2, density) par(mfrow=c(1,2)) lapply(denlist, plot) Does anyone know how to change the main title of each density plot to "var 1", "var 2" by passing optional argument "main"? I've tried lapply(denlist, plot,

Dear R-list I am having troubles understanding how the function is.numeric() works. Any help appreciated. Some commands are given here (the output and my comments are given below) vec <- c(1.4, NA, NA, NA) sapply(vec,FUN=is.numeric) is.numeric(vec[2]) is.na(vec[2]) is.numeric(NA) vec <- c(TRUE, FALSE, NA, NA) sapply(vec,FUN=is.numeric) is.numeric(vec[2]) is.numeric(vec[3])

Hi, Is it possible to run R in command line to evalute R expressions and return results to stdout, something like >R CMD -e "R.version$minor" then you got return >"8.1" Or do a simple calculation >R CMD -e "sin(1.2)" >0.932039 Thanks. -- Pingping Zheng Department of Mathematics and Statistics Fylde College Lancaster University Lancaster LA1 4YF

Derar R-people I have troubles understanding what the function sort.list() is doing. On the homepage it says that it returns a permutation which rearranges a vector into ascending or descending order (like order() but on a vector instead of a sequence). > sort.list(c(0, 2, 10, 11, 4)) [1] 1 2 5 3 4 which does not make sense to me. In fact I am getting the same (non-sensical) result using

Dear R people The function below should be decreasing, convex, and tend to zero when x tends to infinity. curve((1-pnorm(x))/dnorm(x),from=0, to=9) >From the plot we see that for x between 8.0 and 8.3 the function is fluctuating. As far as I understand, this is due to the function pnorm() not being sufficiently accurate in the tails. I am using pnorm() in a way that has probably not been

There is a bug in AIC.default and AIC.lm, as illustrated below. (I've only checked this under 1.6.1, and can't easily check if it has already been reported since the site is down.) > lm1 <- lm(y ~ x, list(x=1:10, y=jitter(1:10))) > lm2 <- lm(y ~ x, list(x=1:10, y=jitter(1:10))) > AIC(lm1, lm2) df AIC lm1 3 -18.662493 lm2 3 -7.265906 > AIC(lm1, lm2, k = 2)

Dear R-devel During the last half a year I have several times encountered the following problem with optim() when using method= "L-BFGS-B". The function return a value which is clearly not the maximum (seen from printing the value each time the function is called). Some output is shown below. A few things I have observed (as I remember it): a. The problem seems to occur when the

Dear all, Paulo Ribeiro, p.ribeiro@lancaster.ac.uk, and myself noticed that R sometimes breaks down with a segmentation fault of (at least for us) unknown course. (We've read #411 and #671 in the bug report on "optim" -- the problem described there sounds familiar; but we have not found any hint on a segmentation fault.) Please find at the very end of this email the file