search for: van_den_hoff

hi, did'nt see anything in the archive: map('world',pro='rectangular',para=0) yields a strange artifact (horizontal bar) extending over the whole map at a certain latitude range (approx 65 deg. north), whereas map('world',pro='rectangular',para=180) (which should be the same) does not show the artifact. the artifact shows up in other projections as well,

Full_Name: joerg van den hoff Version: 1.9.1 OS: MacOS and SunOS Submission from: (NULL) (149.220.4.88) follow up to ID 7166. something like approx(c(1,2),c(NA,NA),1.5,rule=2) crashes 1.9.1 on both systems (MacOS 10.3.5.: bus error, SunOS 5.9: segmentation fault) even if xout is within given x range (as in example above) where rule=2 seems not be relevant anyway.

Full_Name: joerg van den hoff Version: 1.9.0 and 1.7.1 OS: MacOS (1.9.0), SunOS (1.7.1) Submission from: (NULL) (149.220.4.88) something like (sure not the originally intended input, but something like this can happen...): approx(c(1,2),c(NA,NA),1.5) crashes R (bus error under MacOS, segmentation fault under SunOS). search of the bug archive did not work. I hope this bug was not reported

I have encountered the following problem: I need to extract from a list of lists equally named compenents who happen to be 'one row' data frames. a trivial example would be: a <- list(list( df = data.frame(A = 1, B = 2, C = 3)), list(df = data.frame(A = 4,B = 5,C = 6))) I want the extracted compenents to fill up a matrix or data frame row by row. the obvious thing to do seems: b

I need to make plots similar to those produced by the s-plus rayplot function but can't seem to find it in R. These 'vector maps' plot a ray or vector at each specified location. Is there something similar in R ? --Rich Richard Kittler AMD TDG 408-749-4099

...es. (For circles, squares and stars the units of the x axis are used.) Note that it is not just width and height: the units for the whiskers are also relevant. Indeed, the scaling for boxplots is chosen so that the largest width, height or whisker length is one inch. On Thu, 30 Mar 2006, j.van_den_hoff at fz-rossendorf.de wrote: > concerning the symbols manpage: > > > it probably should actually say > > "If 'inches' is 'FALSE', the units for the width and height of the > symbols are taken to be those of the x axis and y axis, respectively..." > a...

I recently coded a recursion algorithm in R and ir ran a few days without returning any result. So I decided to try a simple case of computing binomial coefficient using recusrive relationship choose(n,k) = choose(n-1, k)+choose(n-1,k-1) I implemented in R and Fortran 90 the same algorithm (code follows). The R code finishes 31 minutes and the Fortran 90 program finishes in 6 seconds. So the

If object is user defined is: object$df.residual the same thing as df.residual(object) This is my first time to encounter the $ sign in R, I'm new. I'm reviewing "summary.glm" and in most cases it looks as though the $ is used to extract some characteristic/property of the object, but I'm not positive. Thanks ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I raised this question quite some time ago but it quitly went down the river. I'll give it a second try (before keeping my modified version of matplot for ever...): matplot supports vectors (and/or character strings) for a number of arguments namely `type', `lty', `lwd', `pch', `col', `cex'. all of them act consistently in such a way that the first entries are used

I need to extract identically named columns from several data frames in a list. the column name is a variable (i.e. not known in advance). the whole thing occurs within a function body. I'd like to use lapply with a variable 'select' argument. example: tt <- function (n) { x <- list(data.frame(a=1,b=2), data.frame(a=3,b=4)) for (xx in x) print(subset(xx, select = n))

hi everybody, I noticed the following: in one of my scripts 'layout' is used to generate a (approx. square) grid of variable dimensions (depending on no. of input files). if the no. of subplots (grid cells) becomes moderately large (say > 9) I use a construct like ###layout grid computation and set up occurs here### ... opar <- par(no.readonly = T);

Dear all, I would like to use the Levenberg-Marquardt algorithm for non-linear least-squares regression using function nls.lm. Can anybody help me to find a a way to compute confidence intervals on the fitted parameters as it is possible for nls (using confint.nls, which does not work for nls.lm)? Thank you for your help Michael

hi list, used versions: 2.12.1 and 2.14.0 under ubuntu and macosx. I recently stumbled over a problem with `nls', which occurs if the model is not specified explicitly but via an evaluation of a 'call' object. simple example: 8<-------------------------------------------------------------------------------------- nlsProblem <- function (len = 5) {

for some reason the following message seems not to have reached the list in the first try, at least I can't find it. my apologies if this is my fault: we are running R under Solaris with SunRay Terminals, which are set to 8 bit color to comply with some other software. In this configuration, X11() opens with colortype=true, i.e., it is not recognized that actually the display is only 8

hi everybody, is there a canonical way to get hold of the "trace=TRUE" output from nls, i.e. to copy it to a R variable (or at least to an external log file)? I have only found the possibility to "fix(nlsModel)" (and than the correct copy of that: namespace function ...) within the R-session by modifying the trace() definition within nlsModel. not really good for everyday

I posted this a week ago on r-devel but to no avail and hope this not considered cross-posting: ===============================cut=============================== hi everybody, which each release I hope that the section "weights: an optional numeric vector of (fixed) weights. When present, the objective function is weighted least squares. _not yet

before getting scolded for submitting a (non-)bug report: when using the 'symbols' function for plotting boxplot data (i.e. using 'boxplots' symbols), I noted that the x/y-position of the symbols is associated with the center of the box. while this is obviously natural for a usual plotting symbol (say a circle or a rectangle), it is probably not desired if one uses the

before getting scolded for submitting a (non-)bug report: when using the 'symbols' function for plotting boxplot data (i.e. using 'boxplots' symbols), I noted that the x/y-position of the symbols is associated with the center of the box. while this is obviously natural for a usual plotting symbol (say a circle or a rectangle), it is probably never desired if one uses the

dear list, I stumbled over the follwing strange behaviour/error when using `nls' which I'm tempted (despite the implied "dangers") to call a bug: I've written a driver for `nls' which allows specifying the model and the data vectors using arbitrary symbols. these are internally mapped to consistent names, which poses a slight complication when using `deriv' to

using X11(antialias="none") plot(1:10) produces an incomplete plot with 2.7.0. under MacOS 10.4.11: both y-axes are missing.the y-ticks (except the tick at `2' wich is missing) including labels are there. this happens with a 1280x854 labtop monitor. is this known behaviour/a cairo bug? joerg