similar to: lapply item names

Hi all, could someone tell me which is the best user-friendly free/open source sql database system to use with R, particularly as a back-end for a data-hungry web page? Thanks in advance. Kind Regards Chibisi [[alternative HTML version deleted]]

Dear all, Does anyone know how to overlay a 3d line on a wireframe plot? I would also like to be able to keep the legend that you get when using the option: drape = TRUE when using the option: shade = TRUE. In addition, I would like to know how to keep the axes while getting rid of the box, I use this: par.box = list(col = NA) to get rid of the box but that also causes the axes to disappear.

Hi all, I am trying to do a 3d plot where the x,y,z axes intersects with the origin (0,0,0) using the plot3d() funtion in the rgl package without success. I looked back at the past archives on this subject and someone suggested using djmrgl package. I searched and found it, installed it but when I try to load it I get the error ... Error in inDL(x, as.logical(local), as.logical(now), ...) :

Hi All, I would like to be able to use play3d() to translate the view along a surface, and zoom in and out. All the examples in play3d() function description are of rotations. I would also like to know if there is a method of creating a legend of for the 3d surface using rgl package. Thanks in advance. Chibisi [[alternative HTML version deleted]]

Dear R Users, How can I prevent solve.Qp from printing the solution progress ? Thanks in advance, Tolga This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at

Dear all, I am trying to read a bunch of csv files using read.table() that are named "test_xxxxxx.csv" where "xxxxxx" has no particular pattern. Is there a way of reading all the files by specifying a truncated file name e.g. "test_" with some wild card characters, or would I have to laboriously create some vector with the "xxxxxx" names and iterate or

Dear all, I am trying to execute the simple example in snowfall http://cran.r-project.org/web/packages/snowfall/vignettes/snowfall.pdf ... require(snow) require(snowfall) sfInit( parallel=TRUE, cpus=2 ) sfLapply( 1:10, exp ) sfStop() I have installed the snow and snowfall packages in R on a machine with windows xp, however, after running the "sfInit( parallel=TRUE, cpus=2 )" line I

Hello, I am trying to write a tcltk based program that plots/manipulates xts/xoo time series objects. I have the code I used from ## http://bioinf.wehi.edu.au/~wettenhall/RTclTkExamples/tkrplot.html : ## require(quantmod) require(tcltk) library(tkrplot) Sys.setenv(TZ="GMT") getSymbols("^GSPC", from = "1960-01-01") Myhscale <- 2.5 # Horizontal scaling

I'm trying to write a simple wrapper for plotting functions to make them print to postscript, something like ploteps <- function(file, plotFunction, ...) { args <- list(bquote(...)) # prepare postscript device do.call(plot, args) # close postscript device } I have inserted the bquote otherwise I get a lot of numbers in the plot when I plot/hist something. But if I invoke

Hi, I'm trying to realise a repport with R and Latex (TeXnicCenter and Miktex for Windows) using Sweave(). I'd like to save my plots in a given size. How can I do that ? The code is : \SweaveOpts{prefix.string = figs/plot, eps = FALSE, pdf = TRUE} <<partI, echo=FALSE ,fig=TRUE, include=FALSE>>= plotFunction() @ \includepdf[pages=-]{figs/plot-partI} When I use

Dear all, I am getting a error while using lapply to generate plots. The variable ".name" is used to identify each plot in the "main" variable. The method worked once but afterwards seems to throw up an error when used in a different case. The input ... dataOut <- lapply(names(dataIn), FUN = function(.name){ anotherplotFun(dataIn[[.name]], numb = .name)} ) Throws up the

Hi, I use lapply with a function from a package, and every 20th to 50th function execution (out of 500 to 10 000 times) fails for some unknown reason. RAM consumption ever increases (out of limit) and execution time is endless. I am not going to debug the package. (I rather feel like an end-user.) If it was Java, I'd wrap the function in a try...catch statement like about try{

Hi all, I find myself sometimes in the situation where I lapply over a list and in the particular function I'd like to use the name and or position of the respective list item. What I usually do is to use mapply on the list and the names of the list / a position list: o <- list(A=1:3, B=1:2, C=1) mapply(function (item, name) paste(name, sum(item), sep="="), o, names(o))

Hi there, I'm trying to realise a repport with R and Latex (TeXnicCenter and Miktex for Windows) using Sweave(). I'd like to save my plots in a given size. How can I do that ? The code is : \SweaveOpts{prefix.string = figs/plot, eps = FALSE, pdf = TRUE} <<partI, echo=FALSE ,fig=TRUE, include=FALSE>>= plotFunction() @ \includepdf[pages=-]{figs/plot-partI} The issue is

Hi there, I'm trying to realise a repport with R and Latex (TeXnicCenter and Miktex for Windows) using Sweave(). I'd like to save my plots with a given size. How can I do that ? The issue is that I have several plots created (but it's not always the same numbers of plots, in depends on the data), so I save them in a .pdf file automatically with Latex. Each plot is on one page of the

Dear all, is there a package that I could use to load bit mapped files into R? Everytime I save a picture as .jpg it loses it's exactness because of some type of interpolation. If not .bmp or .png then please tell me a free program I could use to convert those to the bit mapped file type that R will accept. Thanks in advance Kind Regards Chibisi [[alternative HTML version deleted]]

Dear all, I am looking for a way to work out if a file on the internet exists before attempting to download it using the function download.file(). For example, using a url that does not exist url <- "http://finance.yahoo.com/ftse.csv" destfile <- tempfile() download.file(url = url, destfile = destfile) # gives the following response ... trying URL

Hi All, I have an R script that spawns output in the form of an HTML page. This is done by the R2HTML package. Now I want to run the same script using Rcmd BATCH. However, it seems that it is not possible to use R2HTML in this case. My script ends with this error message: ######################### Error in dev.print(png, file = AbsGraphFileName, width = Width, height = Height, : can only

I have split my original dataframe to generate a list of dataframes each of which has 3 columns of factors and a 4th column of numeric data. I would like to use lapply to apply the fitdistr() function to only the 4th column (x$isi) of the dataframes in the list. Is there a way to do this or am I misusing lapply? As a second solution I tried splitting only the numeric data column to yield a list

I have split my original dataframe to generate a list of dataframes each of which has 3 columns of factors and a 4th column of numeric data. I would like to use lapply to apply the fitdistr() function to only the 4th column (x$isi) of the dataframes in the list. Is there a way to do this or am I misusing lapply? As a second solution I tried splitting only the numeric data column to yield a