similar to: How to read jpeg image with russian font in R?

I installed jpeg package and tried to use kim<-readJPEG("kim.jpeg") to read in a jpeg file, but R gave me an error: Error in readJPEG("kim.jpeg") : unable to open kim.jpeg I already put "kim.jpeg" in Rstudio's default working directory: "E:\home work\Rstudio". So I don't think it's a problem caused by omitting the file's path. But I

Hello R-Help, I want to be able to read in a raster image, plot it with grid.raster or rasterImage and save the image with one pixel per a pixel element from my array. Saved preferably in a common image format. The real goal of my question is to eventually read in images with text on them, manipulate them with my controlled functions, save them without changing the image dimensions, and perform

Is it possible to read jpeg files into R? If yes please guide, Thanks.. I tried to search many time but failed to do. Thankis in advance.. with Best Regards, Malik Shahzad Visiting Researcher National Institute of Informatics (NII) Tokyo, Japan Doctoral Student Asian Institute of Technology (AIT) Bangkok, Thailand +66-8-7676-5616 [[alternative HTML version deleted]]

Hi, I m working on latex and R and i need to dynamically generate colors. r<-paste("rgb(1.000,",0,",",0,")",sep="") # i m generating dynamically by paste command cars <- c(1, 3, 6, 4, 9) plot(cars, type="o", col=r) *Error in plot.xy(xy, type, ...) : invalid colour name 'rgb(1.000,0,0)'* How to fix this

HI, I need to parse an xml where key name are same but values are different. <root> <test> Some dummy text </test> <node id="1">one</node> <node id="2">two</node> <node id="3">three</node> </root> When i use xmlGetAttr() function i always get one as value. How

Hi, I am working on table suing R and Latex. I am writing .Rnw file first in which i m reading input file and storing into dataframe. After filtering certain values from this dataframe. I am planning to display it. I don't want to use xtable since i need to change column names. *Sample .Rnw file* @ <<echo=FALSE>>= cat("\begin{table}[ht]")

Hi, This may or may not be slightly off topic, but I'll stick my neck out... I want to launch an external application from R while retaining R as the active application window (with R console as the active R window). I'm using shell.exec() to sequentially open and evaluate the contents in all jpeg images in a specific folder, using the viewer specified by the file association (in my case

Hello all, I'm trying to write a function that produces a main plotting region with several square plots along the right side. Ideally the size of right side plots will scale only with the height of the entire plot, yet never overlap with another secondary plot. The following two snippets get close, however, as I resize the plot horizontally the right side plots (green squares) get smaller

Hi, I am wokring on stacked bar plot and i need to add one arrow dynamically. http://r.789695.n4.nabble.com/file/n4635959/arrow_glossy_right_red.jpg http://r.789695.n4.nabble.com/file/n4635959/Screenshot.10.png Final image: http://r.789695.n4.nabble.com/file/n4635959/Screenshot.1.png Is there any packae which can be used for merging images? -- View this message in context:

Hi, I am trying to create a plot with pairs() using a gplot.hexbin() for each pair. For pairs I can provide a custom upperPanel function: pairs(iris[1:4], panel=mypanel) and mypanel() calls plot.hexbin(): library(hexbin) # Bioconductor mypanel <- function(x, ...){ hb <- hexbin(x) plot(hb) } The problem is that gplot.hexbin() is based on the

I installed the (binary) biOps package, which can use libtiff and libfftw. Then I used macports to install the libraries (in /opt/local/lib). But I restart R and biOps still does not see the libraries. I've tried adding symbolic links from /opt/local/lib to /usr/local/lib, I've added /opt/local/lib to LIBRARY_PATH, LD_LIBRARY_PATH, and DYLD_LIBRARY_PATH, and it doesn't work. Do you

platform x86_64-unknown-linux-gnu arch x86_64 os linux-gnu system x86_64, linux-gnu status major 2 minor 6.2 year 2008 month 02 day

Hello! I first would like to compliment the authors of grid on what has been a wonderfully useful package for me. Now, my question: Is there any way I can specify the size of some grid.text using grid units? I must label the regions of a plot. The regions can be either very small or very large, so I would like to label each by fitting its text to the size of the region in question. Ideally, I

Hi everyone. I want to solve the following problem. I have a data.frame and I create a dotplot using lattice. Then I want to use the grid-package to create a combined graphic which contains the dotplot as well as a textplot() (using package gplots) of the data.frame next to the dotplot. Example code: library(lattice) library(grid) library(gplots) xx <- data.frame(f=factor(rep(1:5, each=5)),

Hi All, I have been able to modify the x-axis to start at zero by adding xlow and xhigh parameters; that was pretty simple. I have been unable to find the location of the code that would turn off the information weighting of the box size (I have smaller randomized trials getting less weight than a much larger non-randomized trial). The function is forestplot() from rmeta. Thanks for any

Dear R-users, I have got the following problem. I need to create 4x2 arrays of xyplot's on several pages. The plots are created within a loop and plotted using the print function. It seems that I cannot find the proper grid syntax with my viewports, and the more/newpage arguments. The following script is a simplification but hopefully will suffice to illustrate my problem. Any suggestion

Dear colleagues I'm using data that looks like .test and .test1 below to draw two mosaic plots with cell labelling (the row percentages from the tables). When I take out the pop=FALSE commands in the mosaic commands and comment out the two lines labelling the cells, then the plots are laid out exactly as I'd like: side-by-side. But I do require the cell labelling and the pop=FALSE

Hi all, I'm trying to generate a plot containing a scatterplot, with marginal densityplots for x and y. However, when I try to generate a vertical densityplot, I get the message "warning: can't clip to rotated viewport", and nothing shows up. I'm probably misunderstanding how viewports are meant to be used, so if someone could give me a hint, I'd be most grateful. my

The following code, though not brilliant, works on an A4 page. It might look odd on other devices of a very different size. =============X8------- cut here ---------------------------- require(grid) wide <- 15 vps <- grid.layout(nrow = 3, ncol = 4, widths = unit(rep(1, 4), rep("null", 4)), heights = unit(c(99, 1, 99),

## This example runs in R 2.3.1 and does not run in R 2.4.1. I am ## raising it here for two questions: one on how to debug functions ## inside a namespace, the other on how to control clipping. tmp <- data.frame(x=1:5, y=1:5, a=factor(c(1,1,1,1,1), levels=1:4)) xyplot(y ~ x, data=tmp, ylim=c(1.5,4.5), panel=function(x,y, ...) { cpv <- current.viewport()