search for: octav

trying to install octave from epel onto centos 5.2, and getting dependency errors. only place I could find this RPM was in epel, which I 'thought' ran on native rhel5/centos5 without requiring any other repos, but I guess I'm wrong?!? google tells me libhdf5 is some sot of 'heirarchial data format'...

Dear R developers, I'm an Octave developer in the process of implementing a single precision type in Octave and I have an issue with the NA value. The choice of NA value in Octave was made a few years back so that the high word of the NA value was 0x7ff00000 and the low word was 0x000007A2 for compatibility with R and to ease any...

Hi, I'm afraid that the function read.octave from package "foreign" has some problems with the ASCII data format exported by new versions of Octave (later than 3.2.X). It fails even for a simple case as: [Octave code:] octave:1> x=1; octave:2> save -ascii testdata.mat x [Now in R:] > octavedata <- read.octave('tes...

Thank you. Guess it's a plausible explanation. > -----Original Message----- > From: Liaw, Andy [mailto:andy_liaw at merck.com] > Sent: Tuesday, December 03, 2002 08:05 AM > To: 'Chunlou Yung' > Subject: RE: [R] Plotting Speed: R vs Octave > > > If I'm not mistaken, Octave does not have its own graphics system, but > rather rely on gnuplot, which is entirely in C. Lattice/Grid in > R, however, > have a large chunk of the code written in R, for trellis > displays. There's > always price to be pai...

Hi, I am trying to load into R a MATLAB format file (actually, as saved by octave). The file is about 300kB but R complains with a memory allocation error: > library(Rcompression) > library(R.matlab) Loading required package: R.oo Loading required package: R.methodsS3 R.methodsS3 v1.2.0 (2010-03-13) successfully loaded. See ?R.methodsS3 for help. R.oo v1.7.2 (2010-04-13)...

On 5/6/19 7:47 AM, Dirk Eddelbuettel wrote: > > On 5 May 2019 at 10:47, Andrew Janke wrote: > | I'm interested in porting the R example datasets package to GNU Octave > | and Matlab. Would you have objections to my doing so? > > You don't even have to ask... > > [...] > > | Since R's datasets package is GPL, I think I'd be within my rights to > | just do this. But I wanted to ask first, to make sure I didn't ruffle > |...

...has been said about this by the folk who have been making R work so well. One of the main difficulties is that the environment of computations affects relative performance. e.g., what settings did a distro package builder choose. I note that my 3 GHz Dual Core machine running Ubuntu 8.04 gets octave 3.0.0 octave:6> tic; a = a + 1; toc Elapsed time is 0.120027 seconds. octave:16> tic; for i=1:1e7; a(i) = a(i) + 1; end; toc; Elapsed time is 238.311 seconds. R2.8.1 > a <- rep(1,10000000) > system.time(a <- a + 1) user system elapsed 0.080 0.064 0.146...

...uot;KtpR20HXM2" Content-Transfer-Encoding: 7bit --KtpR20HXM2 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Congrats on getting 0.99 out, and on the rapid convergence towards 1.0. Attached below is the latest email in a very interesting thread about building GNU Octave with the 'Atlas' (Automatically Tuned Linear Algebra Software) libraries that are drop-in replacements for (parts of) Lapack and the Blas. Speed increases of up to 10 have been reported for simple matrix multiplication (this is over Lapack/Blas used by Octave). You can find the whole thre...

Hi, R Developers, I'm interested in porting the R example datasets package to GNU Octave and Matlab. Would you have objections to my doing so? This would involve transforming the example data and metadata into a format that Octave understands, and porting all of the datasets' Example code pieces to Octave M-code. (This would require no work on your part; it'd be my project.)...

The problem: I would like to translate the Octave algorithm in griddata.m to R. Within the griddata algorithm calls are made to the Delaunay function. For the R translation I have found delaunayn within the "geometry" package and also the deldir package. Both do similar things but give slightly different results depending on the input....

I'm new to the list. I've used R and S-PLUS a bit for about 15 years but am now working to make R my main program for all numerical and statistical computing. I also use Octave for this kind of work and I recommend it (it is also under the GPL). Here's my question: In Octave I can write shell scripts in the Linux/UNIX environment that begin with a line like this... #!/usr/local/bin/octave -q ...and the remaining lines are octave commands. Is it possible to do...

Hi, I thought I'd post this simple function I wrote, just in case other users also have Octave data files that they'd like to read into R. (Octave is a matlab-like language, see www.octave.org for details.) Any comments/suggestions appreciated. Stephen read.oct.file <- function(filename) { ## Read in an Octave ASCII data file (as created by "save -ascii" in ## Octa...

Hi all, How can I implement a multiple function return values scheme in a performance efficient way, just like what be done in Matlab or Octave? Thanks in advance, Yabin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110531/5813e7a6/attachment.html>

...> > It wasn?t really the orientation I was worried about. > > I should perhaps have phrased the question better. It was really about the > fact that for the larger input example the triangles **are not** the same > for each implementation. > > They certainly differ from the Octave implementation (not that that is in > some way a gold standard). > > Anyhow the point made by yourself and others is well taken, i.e. I should > have no expectation that different implementations will produce the same > output. > > > > Regards, > > > > Kam &g...

Hi All, if memory serves me well I recall some paper comparing the relative success in getting mainstream acceptance (as mainstream as statistics can be) of both R and Octave. I remember vaguely that the fact the development strategies (core team vs one main developer) played a major role in the relative success of the two programs. I tried to find this paper, but my goggle skills are failing me. Would anyone know where to find it? Best F -------------- next part...

Hi Yabin, Octave uses an octave_value_list object to return multiple values so I don't think it has anything to do with the compiler. A sample function that can be dynamically linked with Octave and called from octave interpreter: #include <octave/oct.h> DEFUN_DLD (divmult, args, nargout, "")...

...a Shogun 0.7.1 is out and available at http://www.shogun-toolbox.org which contains one new feature that might be of interest to R users. The eierlegendewollmilchsau interface. In case you don't know what this term stands for use google images :-) It is one file that will interface shogun to octave,r,python,matlab. It provides commands to run code in foreign languages: Example: library(elwms) A=matrix(c(1.0,2,3, 4,5,6), nrow = 2, ncol=3) B=matrix(c(1.0,1,1, 0,0,0), nrow = 2, ncol=3) pythoncode=sprintf('import numpy\nresults=tuple([A+B])'); elwms('run_python', 'pythonco...

...h having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Wed, Jan 24, 2018 at 5:59 AM, Yuen, Kam <k.yuen at fugro.com> wrote: > The problem: > I would like to translate the Octave algorithm in griddata.m to R. > Within the griddata algorithm calls are made to the Delaunay function. For > the R translation I have found delaunayn within the "geometry" package and > also the deldir package. > Both do similar things but give slightly different results depe...

By any chance is anyone aware of an R function that duplicates Octave's poly function? Here is a description of Octave's poly function: Function File: poly (A) If A is a square N-by-N matrix, `poly (A)' is the row vector of the coefficients of `det (z * eye (N) - a)', the characteristic polynomial of A. As an example we can use th...

...[base] name=CentOS-$releasever - Base mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=1 enabled=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5 Octave is installed on drizzle: drizzle@/etc/yum.repos.d# yum info octave Loading "fastestmirror" plugin Loading mirror speeds from cached hostfile * centosplus: mirrors.portafixe.com * base: mirrors.portafixe.com * updates: mirrors.portafixe.com * extras: mirr...