similar to: image() with each grid point equal to one pixel?

I'm using R for calculations and plots in a statistical paper. Is there a canonical reference to use in the bibliography? (Or is it not common to acknowledge computer programs in journal papers?) -- Bj?rn-Helge Mevik <bhm at math.uio.no> -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

The installation of R I'm using (R 1.2.0 on Redhat Linux (R-base-1.2.0-2.i386.rpm)) apparently expects to find tcl in ./share/tcl8.0, ./share/tcl8.0 or /usr/local/share/tcl8.0: > library (tcltk) Error in firstlib(which.lib.loc, package) : Can't find a usable init.tcl in the following directories: ./share/tcl8.0 ./share/tcl8.0 /usr/local/share/tcl8.0 However, tcl is installed in

As far as I can tell, there are no facilities in the "base" R for image analysis. Is there any extension or package for R that implements image analysis? I'm thinking of features such as o Reading and writing image files, o displaying indexed or "true color" images, o resizing, cropping, etc, of images, o filters for manipulating images (smoothing, edge detection, etc) o

On Mon, Aug 24, 2015 at 11:29 AM, Bj?rn-Helge Mevik <b.h.mevik at usit.uio.no> wrote: > arnaud gaboury <arnaud.gaboury at gmail.com> writes: > >> - Intel MKL: this is part of Intel Parallel Studio and is a paid >> software. Now, there is the MKL package distributed by >> Revolutionanalytics, but I am not certain how this can be distributed >> for free. Is

Hi All, would appreciate an answer on this if you have a moment; Is there a function (before I try and write it !) that allows the input of a covariance or correlation matrix to calculate PCA, rather than the actual data as in princomp() Regards Glenn [[alternative HTML version deleted]]

I'm writing a couple of related functions, and I'd like to generate a (single) .R file (containing the function definitions), and separate .Rd files (documenting each function). Would this be possible with Sweave/noewb? Has anyone tried something along this idea? -- Regards, Bj?rn-Helge Mevik

Dear all R users, Can anyone please tell me how to add grid lines in any plot in R including in Histogram, QQ plot etc? Thanks and regards, Arun [[alternative HTML version deleted]]

Dear developeRs, I've searched the documentation, FAQ, and mailing lists, but haven't found the answer(*) to the following: When should one specify LazyLoad, LazyData, and ZipData? And what is the default if they are left unspecified? (*)Except that 1) If the package you are writing uses the methods package, specify LazyLoad: yes, and 2) The optional ZipData field controls whether the

I haven't been able to connect to http://bugs.r-project.org the last few days. Is there a problem with the site (or am I having a problem :-) ? -- Bj??rn-Helge Mevik

I want to build R optimized, with either MKL, OpenBLAS or ATLAS. My OS: Fedora 22 Hardware: CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 8 Thread(s) per core: 2 Vendor ID: GenuineIntel Model name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz I am a little confused when it comes to choose a method and would like to hear your experiences. If I am right, I have 3 possibilities: -

Duncan Murdoch <murdoch.duncan at gmail.com> writes: > users of other languages may want to have messages and variable names > in their native language, and ASCII might not be enough for that. Allowing for messages in non-ASCII encodings would probably be a good idea, but I think allowing non-ASCII variable names is dangerous. -- Regards, Bj?rn-Helge Mevik

Dear developeRs, I use Red Hat Enterprise Linux WS release 4 (Nahant Update 2) on an x86_64 machine (two Intel P4 CPUs with 64 bit support), and R-beta_2005-12-12_r36712.tar.gz. If I run configure without any options, it does not list tcltk among the supported interfaces: ./configure [...] R is now configured for x86_64-unknown-linux-gnu Source directory: . Installation directory:

Full_Name: Bj?rn-Helge Mevik Version: 2.1.0 OS: GNU/Debian 3.0 Linux Submission from: (NULL) (80.111.104.162) In Appendix B R coding standards of the Writing R Extensions manual, Emacs/ESS users are encouraged to use (add-hook 'ess-mode-hook (lambda () (ess-set-style 'C++) ;; [snip] (add-hook 'local-write-file-hooks

Dear developeRs, As of icc 10, the -c99 option is deprecated, and generates a lot of warnings when compiling R or R packages. If you use CC="icc -std=c99" instead of just CC="icc", R's configure will not add the -c99 option, and the code seems to compile and run just fine. (Please don't hesitate to let me know if this is a bad idea. :-) -- Regards, Bj?rn-Helge

Hello, I have a data set with 15 variables (first one is the response) and 1200 observations. Now I use pls package to do the plsr as below. trainSet = as.data.frame(scale(trainSet, center = T, scale = T)) trainSet.plsr = mvr(formula, ncomp = 14, data = trainSet, method = "kernelpls", model = TRUE, x = TRUE, y = TRUE) from the model, I wish to know the

As of R 1.7.0, princomp no longer accept matrices with more coloumns than rows. I'm curious: Why was this decision made? I work a lot with data where more coloumns than rows is more of a rule than an exception (for instance spectroscopic data). To me, princomp have two advantages above prcomp: 1) It has a predict method, and 2) it has a biplot method. A biplot method shouldn't be too

Greetings. I'm trying to recreate in R some regression models I've done in SAS, but I'm not getting the same results. My advisor suspects this may be due to differences in precision between R and SAS. Does anyone know where I can find specifications for R's type double? (It doesn't seem to be in the R Language Definition.) Thanks in advance for any help anyone can

hi R help group, I have installed PLS package in R and use it for princomp & prcomp commands for calculating PCA using its example file(USArrests example). But How I can use PLS for Partial least square, R square, mvrCv one more think how i can import external file in R. When I use plsr, R2, RMSEP it show error could not find function plsr, RMSEP etc. How I can calculate PLS, R2, RMSEP, PCR,

Dear developeRs, I have a package, pls, that implements package options. The users are supposed to use a function pls.options() to manipulate them. If a user changes the options, they are stored in .GlobalEnv. I was recently informed that this is against current CRAN submission policies, so I need to change that. I have looked at several different packages that implement package options, and

Dear developeRs, I'm trying to build R (2.7.1, on an x86_64 running Linux, but I believe I have observed this on x86 and with earlier versions of R as well) using external BLAS and LAPACK libraries _and_ generating libR.so, libRblas.so and libRlapack.so. Without --enable-BLAS-shlib, configure is able to find and use the external LAPACK library: ./configure \