similar to: ODE's in R

Hi, Does anybody know, what is going on here? > diag(sqrt(1)) [,1] [1,] 1 > diag(sqrt(0.3333)) <0 x 0 matrix> > sqrt(1) [1] 1 > sqrt(0.3333) [1] 0.5773214 BR, Markku Karhunen researcher University of Helsinki

Hi all, I've been wondering for a long time why R drops the dimensions of an array/matrix when you try to take a subset of one column. I mean this: dim(A) [1] 2 5 2 B=A[1,,] dim(B) 5 2 # so now dim(B)[3] doesn't work C=B[2,] dim(C) NULL # so now nrow(C) doesn't work Typically, you can get rid of this by writing as.matrix, as.array(...) but that generates extra lines of code.

Hi, This is a very basic question, but apparently I am too stupid for it. I have a large matrix A, and I need to avoid for loops. How could I apply a function f(a,r,c) on each element of A, using the subscript (row and column) of a as the other arguments? Thanks in advance, Markku Karhunen National Public Health Institute, Finland

Dear Group, I am having trouble with using rlm on multivariate data sets. When I call rlm I get Error in lm.wfit(x, y, w, method = "qr") : incompatible dimensions lm on the same data sets seem to work well (see code example). Am I doing something wrong? I have already browsed through the forums and google but could not find any related discussions. I use Windows XP and R

Hello Group, I could use an advice on how SEXP handles work. My aim is to implement a system where I initially set a few global variables that are used for communication between C and R code. Then I do some work with R code and periodically call a function of my own that will update the system state. Such a design is useful for many purposes (for GUIs to name one). I am not entirely sure that R

Hi all ! I have a little problem here mounting or browsing samba shares. I have a FreeBSD 4.6.2 running samba, and a share on that called public. when I try to mount that share it asks for password, and then gives an error: ex. libra# mount_smbfs //maxi@samba/public /mnt Password: mount_smbfs: can't get handle to requester (no /dev/nsmb* device) libra# I can list the shares with

> I suppose to be annoyingly pedantic about it you could require a > network connection for the build, check svn info and svn status and > then set the version string based on whether or not there are local > patches applied to the checkout - but that would probably fall under > neurotic :) Using svnversion (as the original patch does) does exactly this. It outputs the rev

The problem I have had with many SMS email gateways, is that they do not allow to reply back. Of course, email is a superior service over SMS, but does not really replace it ( - at least not until all the mobile phones have email access on them...). It would be nice if the SMS service would be available not only on GSM/GPRS/etc., but also on any telephone number in the world - or at least on

Hello there, Suppose you want to solve the following system of ODE's (a simple Lotka-Volterra predator prey model) dP/dt = beta*P*V - mu*P dV/dt = r*V - beta*P*V where P and V are the numbers of predators and prey. Now, this is easy to do, but suppose you have a system of equations like this, dP1/dt = beta1*P1*V1 - mu1*P1 dP2/dt = beta2*P2*V2 - mu2*P2 dV1/dt = r1*V1 - beta1*P1*V1

Dear Group, I'm trying to build a set of new graphic device drivers. I use the devNull example a a beginning point: $ R CMD SHLIB devNull.c gcc -shared -L/usr/local/lib -o devNull.so devNull.o (everything works OK) $ R CMD SHLIB devNull.cpp g++ -shared -L/usr/local/lib -o devNull.so devNull.o (everything works OK) The difficulties start when trying to compile manually. I compile the

On Jul 9, 2008, at 8:40 PM, Chris Lattner wrote: > > We don't want another commit after every other commit. This should be > set by the makefile when a build is done. This isn't a commit, it's just a file that's not under version control but created during update/checkout. I suppose to be annoyingly pedantic about it you could require a network connection for the

Samba 3.0.11 with Winbind running on Redhat Enterprise Linux 3, compiled with --with-pam (possibly another argument that I can't remember at this second). I applied it to my DC that is playing the PDC role today and all of a sudden Winbind could not enumerate any Active Directory information. Mind you, I'm not joined to the domain using Kerberos/ADS; the libs that come with RHEL3 are

4.4.2017, 4.21, Alice Wonder kirjoitti: > > Thanks! I ordered a 2.5" SATA drive and they screwed up and sent me M.2 > - I'll be sure to look at the booklet (Intel SSD 5 but there may be more > than one variant?) Intel 5 series SSDs use SATA interface, so the discussion about NVMe support doesn't apply in this case. You can use an adapter like this to mount it in a

H kirjoitti 14.4.2019 klo 13.42: > I would love to find an old-fashioned outliner, like the ones that used to exist prior to the modern GUIs. Emacs outline mode? https://www.gnu.org/software/emacs/manual/html_node/emacs/Outline-Mode.html -- Markku Kolkka markku.kolkka at iki.fi

Clients are Windows 2000; server is running Samba version 3.0.2a. We've been a W2K shop for some time but have started to get in a few Windows XP systems (principally laptops). The issue we're experiencing with the Win XP machines is that they can't map the homes share, either through a VPN or when connected directly to the network the samba server is on. All other shares remain

CRAN (and crantastic) updates this week New packages ------------ * EffectStars (1.0) Maintainer: Unknown Author(s): Gunther Schauberger License: GPL-2 http://crantastic.org/packages/EffectStars The package provides functions to visualize regression models with categorical response. The effects of the covariates are plotted with star plots in order to allow for an optical

Hello, I would like use Kalman filter for estimating parameters of a stochastic model. I have developed the state space model but I don’t know the correct way use Kalman filter for parameter estimation. Has anybody experience in work with Kalman filter in R. I don’t know the correct function. Maybe it is - KalmanLike; but what is the correct Input? - tsmooth? -

Hello, I''m working on a download service which grants users a one-time-download access to files. The idea is to write an entry to a database table after a successful download that "locks" the download link for the user. After doing some quick tests with send_file I noticed that send_file does not block until the user has downloaded the full file, but proceeds with the

Hello, I have an HP Pavilion g series laptop with an ATI vision A6 video chipset. I tried elrepos ati driver but found that the laptop would freeze intermittently and frequently. So I unloaded that driver and am running with nomodeset argument just to get a desktop. I went to the ATI site but am not sure what to try. Would anyone know which driver I could use that would work? Thanks in

One last issue: I ran ./configure and got this: checking for Mix_OpenAudio in -lSDL_mixer... no *** SDL_mixer not found. Configuring without audio support. config.log says: configure:3145: checking for sdl-config configure:3180: checking for SDL - version >= 1.0.1 configure:3265: gcc -o conftest -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT conftest.c -lSDL -lpthread 1>&5