similar to: Rjava, RImageJ, and/or S4 question.

Hello everybody, I'm running R under Mac OS 10.6.3 on a MacBook 2.16 GHz Intel Core 2 Duo. I've recently installed R 2.11.0 and the RImageJ library v. 0.1-142. When trying to follow the example given in the package manual and I get the following error: download.file( "http://www.google.fr/intl/en_en/images/logo.gif", dest = "google.gif" ) trying URL

Hello all, I am attempting to run an R script that makes use of RWeka. I am running SuSE Linux 9.3 with Java 1.5.0_06, R version 2.2.1, Weka 3-4-7, and Rweka 0.2-1. CLASSPATH="/usr/local/weka-3-4-7/weka.jar:/usr/local/JGR/JGR.jar" I receive the error: NewObject("weka/core/Instances","(Ljava/io/Reader;)V",...) failed Exception in thread "main"

Hello, Consider this : > setClass("track", representation(x="numeric", y="numeric")) [1] "track" > o <- new( "track", x = 1, y = 2 ) > for( i in o ){ + cat( "hello\n") + } Error: invalid type/length (S4/1) in vector allocation This happens at those lines of do_for: n = LENGTH(val); PROTECT_WITH_INDEX(v =

Hello, I've uploaded the initial release (0.0-142) of the RImageJ package to CRAN. The package allows R to use the facilities of the java based image processing and analysis platform ImageJ. See also the announcement on my blog, with a very simple example showing how to use the package: http://romainfrancois.blog.free.fr/index.php?post/2009/06/22/using-ImageJ-from-R%3A-the-RImageJ-package

Hello, I've uploaded the initial release (0.0-142) of the RImageJ package to CRAN. The package allows R to use the facilities of the java based image processing and analysis platform ImageJ. See also the announcement on my blog, with a very simple example showing how to use the package: http://romainfrancois.blog.free.fr/index.php?post/2009/06/22/using-ImageJ-from-R%3A-the-RImageJ-package

Hi, Maybe this is more a programming questions than a specific R-project question, but maybe there is someone who can point me in the right direction. I have a picture of cirkels which I took with a digital camera. Now I want to use the diameter of the cirkels on the picture for analysis in R. I can use pixmap to import the picture, but how do I find the outside cirkels and calculate the

Hi, I am looking for a R package which is capable to process and analysis pictures of tissues (stained) in an automatic way. I had a look on biops and EBImage (Bioconductor) but they are not automatic... Did you already use/know a such package ? Thanks, - Martial _________________________________________________________________ Tchattez en direct en en vidéo avec vos amis !

Hi I have a string "56 Fe [1]" that I would like to use as a variable name by using "assign" however I think the spaces and brackets might be causing R some trouble. How can I change the string so that it just becomes 56Fe1 and can be used as a variable name. Thank You Kurt _________________________________________________________________ [[elided Hotmail spam]]

What software exists for digitizing video to quantify the motion of specific features in the image? I might be willing to use something that's NOT in R, though I'd prefer something in R (or at least with an R intereface). Thanks, Spencer Graves

Hello, I've looked in tools:::.install_packages for some sort of hook that would let packages developers point to further instructions after a package is installed. For example, some packages need to setup environment variables, ... Is there something I have missed ? Romain -- Romain Francois Independent R Consultant +33(0) 6 28 91 30 30 http://romainfrancois.blog.free.fr |-

Hello, I'm trying to package some source files that link R to a broker using a Java API and the rJava package. I am successful doing the connection and operate on it using my R code. I would like to package the files and release the package. I created some S4 classes to hold several Java objects. I use WinXP and R 2.7.1. I've searched RSeek and the Wiki for help, but could not find a

Hello everyone,  I'm working in a project to create an special analysis about visualization in some animals and its behaviour, through checking eye movement. The point is this is very important to get data from the image as a resume of what this animal sees. I think an RGB histogram like photoshop does, but I need to get the data from this histogram analysis and I was wondering about using R

Hi, on a lattice, I have binary 0/1 data. 1s are rare and may form clusters. I would like to know the size/length of largest cluster. Any help warmly welcome, Sylvain.

I have a bunch of jpg files that I need to count cells on. Some cells are green and some cells are red. Is there a function like locator that I could use to manually count the cells? I would like to be able to click on a cell, have it marked so I don't count it again and have a counter keep track. Locator comes close but I would only be able to count one colour at a time. Is there a way I

Folks, In brief -- how many of you have found the 'operators' package to be valuable in their work? Not that I lack respect for the amount of work involved in creating and maintaining a package, but I am unsure about the utility of these new operators. Several of the operators appear to offer different ways of accomplishing tasks that are already relatively easy in base R -- regular

Is there an specific function to eliminate blank space within strings? Thanks -- Dr. Agustin Lobo Institut de Ciencies de la Terra "Jaume Almera" (CSIC) LLuis Sole Sabaris s/n 08028 Barcelona Spain Tel. 34 934095410 Fax. 34 934110012 email: Agustin.Lobo at ija.csic.es http://www.ija.csic.es/gt/obster

Hi. This post follows on from: http://lists.xensource.com/archives/html/xen-devel/2005-04/msg00185.html And is possibly related to the bug referenced here: http://bugs.sun.com/bugdatabase/view_bug.do;:YfiG?bug_id=4335360 In summary: Java processes are doing odd things. 1) It appears that number values are mysteriously changing. e.g. if you look at the Hashtable error there is no way the

Hola. En mi caso, no he podido resolver los problemas con el Java para usar XLConnect, que en los papeles me parece el mejor. Supongo que algo de la arquitectura del sistema o bien de la relación entre el Java, el R y el RStudio. Así que utilizo library(openxlsx) write.xlsx(datos, file = "EDA1.xlsx") #donde datos es el objeto que quiero guardar. Requiere instalar el RTools, según tipo y

Hi, I have a problem installing SystemVision from MentorGraphics in wine. The problem is with the packaged Java Runtime 1.3.1. The error output when installing is: Exception in thread "main" java.lang.ExceptionInInitializerError: java.lang.RuntimeException: Unable to create a suitable default GraphicsConfiguration. Try changing your Display Settings. at

I put the disc in and run the setup.exe it says "InstallAnywhere is preparing to install" then it quickly goes from 0% to 100%... then it disappears and nothing happens... Please help... I've got to learn Japanese... :(