similar to: Problem loading ReadImages package (and RGooglemaps)

Hello list I am trying to use a Googlemaps tile (png file, 640 X 640 px tile) as a background to a plot and have been using the rgdal library to read in the PNG file (modified from code in the RGoogleMaps package). This works OK. My problem is is that the SGDF2PCT function in rgdal seems to be limited to 256 colors and this is introducing (I think) some degradation to the image which appears on

When an RGB photo is displayed using R's image() function with the help of the pixmap (or rimage) package it is common to see an anomalous white line running across the picture (either horizontally or vertically). The line can be removed by simply stretching the image frame a little in the direction perpendicular to the anomalous line, or by maximizing the image frame (tested under Fedora 10;

Hello R-help I am having trouble getting gls to find the R objects that comprise a linear model when the data=named.object option(option!) is not specified. In the gls() help it states data is "an optional data frame containing the variables named in model, correlation, weights, and subset. By default the variables are taken from the environment from which gls is called". An example:

Dear R mailing list I would like some help on how to get R to display the same number of significant digits (?) for *all* tick marks on axis labels (yet be flexible enough to handle different data sets that vary by 10-1000X). Consider this simple example: #---------------------------# x <- seq(0,2,by=0.5) xlim <- range(pretty(x,n=5)) ylim <- xlim

Dear all I prepared some image processing routine which depended on package ReadImages. Basically I imported image to R, changed rgb to grayscale, normalised an image made some selections and changed to image by imagematrix. Recently I learned that this package was removed from CRAN and can not be used in R 3.0.0. What options I have now to import image to R, change it to grayscale, make some

R Help, I posted a question on StackOverflow yesterday regarding an issue I've been having with the RgoogleMaps packages' displaying of axes. ?Here is the text of that submission: http://stackoverflow.com/questions/6258408/rgooglemaps-axes "I can't find any documentation of the following problem I'm having with the axis labels in RGoogleMaps: library(RgoogleMaps) datas

Dear useRs - ggmap v1.2 is now available on CRAN. ggmap is a relatively new package which combines the power of ggplot2 with the spatial contextual information in Google Maps or OpenStreetMaps (via RgoogleMaps) to provide an easy, consistent and modular framework for spatial graphics. For examples on how to get started with ggmap, see ?ggmapplot for several examples of its use. Happy

Hi, I installed biOps on my XP, and installed the required dll packages, jpeg62.dll, libfftw3-3.dll, and libtiff3.dll, as suggested by this forum. Then it worked perfectly for about one week till this afternoon. When I tried to load biOps again, I got the following error message again Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library

Hi, I installed biOps on my XP, and installed the required dll packages, jpeg62.dll, libfftw3-3.dll, and libtiff3.dll, as suggested. Then it worked perfectly for about one week till this afternoon. When I tried to load biOps again, I got the following error message again Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library

Hi, I have a R Package. It is working, but I can't that it install the dependencies automatically. When I try to install I receive this message: > install.packages("./RT4Bio_1.0.tar.gz",dependencies=TRUE) Installing package(s) into '/usr/local/lib/R/site-library' (as 'lib' is unspecified) inferring 'repos = NULL' from the file name ERROR: dependency

Dear R-help I want to display an image file in a new plot frame. SVG is my preferred format, but I can also consider PNG, GIF, JPEG, TIFF, and PPM (from ImageMagick). By way of background (although not material to this posting), the image file is generated by a call to 'dot' (part of the 'Graphviz' suite) after the required .dot file has been produced using hand-crafted R code.

Buenas dias a tod@s, Quisiera saber si alguien tiene experiencia con el procesamiento de imágenes (en formatos JPEG o PNG) en R y la búsqueda de similitudes / diferencias entre ellas. La idea de lo que me gustaría hacer es: tomar una imagen, cargarla en R y luego analizar su estructura. Para las dos primeras tareas, la libreria ReadImages en CRAN me ha sido útil, pero para la segunda, hasta

Dear R-help We are getting an error message `jpeg62.dll missing'. We are running Windows 7 64-bit, from a Mac using Boot Camp. Do you know of this error message, and can you give us help trying to resolve the problem? many thanks Rocky Rocky Hyacinth Technician Department of Archaeology University of Sheffield United Kingdom [[alternative HTML version deleted]]

Hi all, While dat['a1',] and dat['a10',] produce the same results in the following example, I'd like dat['a1',] to return NAs. dat <- data.frame(x1 = paste(letters[1:5],10, sep=''), x2=rnorm(5)) rownames(dat) <- dat$x1 dat['a1',] dat['a10',] > sessionInfo() R version 2.7.2 (2008-08-25) i386-pc-mingw32 locale:

Hi all, > library(rgl) > plot3d(1,1,1) > snapshot3d("somefile.png") Error in rgl.snapshot(...) : pixmap save format not supported in this build Why does this no longer work? thanks, Remko > sessionInfo() R version 2.12.0 (2010-10-15) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_Australia.1252 LC_CTYPE=English_Australia.1252 [3]

Full_Name: Mark Bravington Version: 2.6.2 patched OS: Windows XP Pro Submission from: (NULL) (140.79.22.104) > grep( '[:upper:]', letters, val=T) # shurely shouldn't match anything ?? [1] "e" "p" "r" "u" The converse ( '[:lower:]' and LETTERS) seems to work OK. --please do not edit the information below-- Version: platform =

Having loaded a package that masks an object from another package, calling help(conflictedname, help_type = 'html') instead of producing a page giving the choices of help page available The page produced is Error in httpd("/library/NULL/help/nobs", NULL, NULL, c(48, 6f, 73, 74, : replacement has length zero This example is reproduced using library(gdata) help(nobs,

Hi, I am not sure how to fix the following error. LGD <- c(11.6, 12.3, 15.8, 33.1, 43.5, 51.3, 67.3, 84.9) cor (x=(file [1:47231,3:10]), y= rep (LGD, 47231), method = "pearson") Error in cor(x = (file[1:47231, 3:10]), y = rep(LGD, 47231), method = "pearson") : incompatible dimensions > sessionInfo() R version 2.13.0 (2011-04-13)

I am the maintainer of a Bioconductor package (affylmGUI) which uses tcltk. It freezes inconsistently on MS Windows, but not Mac or Unix. see details below. After considerable testing I have reduced the problem from a few thousand lines of code to 30 lines! If you paste the following lines of code into an R window: testGUI <- function(){ require(tcltk) MainWindow <-

Hi Gabor, I just used your R code below and the code worked properly without any error messages. Attached is the output graph, which may be the one you expected. library("Rgraphviz") set.seed(123) V <- letters[1:10] M <- 1:4 g1 <- randomGraph(V, M, 0.2) g1 plot(g1) Thanks. Howard On Wed Mar 31 11:18:25 EDT 2010, Gabor Grothendieck <ggrothendieck at