search for: differeces

A quick question x <- as.yearmon(2000 + seq(0, 23)/12) x [1] "Jan 2000" "Feb 2000" "Mar 2000" "Apr 2000" "May 2000" "Jun 2000" "Jul 2000" "Aug 2000" "Sep 2000" "Oct 2000" "Nov 2000" "Dec 2000" "Jan 2001" [14] "Feb 2001" "Mar 2001" "Apr

The algorithm does make a differece. You can use Kahan's summation algorithm (https://en.wikipedia.org/wiki/Kahan_summation_algorithm) to reduce the error compared to the naive summation algorithm. E.g., in R code: naiveSum <- function(x) { s <- 0.0 for(xi in x) s <- s + xi s } kahanSum <- function (x) { s <- 0.0 c <- 0.0 # running compensation for lost

Dear ALL-R helpers, I want to let R get vector from c ,for example :numeric array ,vector .I saw some exmple like this : /* useCall3.c */ /* Getting an integer vector from C using .Call */ #include <R.h> #include <Rdefines.h> SEXP setInt() { SEXP myint; int *p_myint; int len = 5; PROTECT(myint = NEW_INTEGER(len)); // Allocating

Dear R-Experts, Seek your help. In a List object e.g. Time_duration[[]], I am storing differece between two time-stamps (start-time and end-time) for a certain event. Time difference does not remain constant for, say, 10 observations. Each time, the time difference is given in different time units: seconds / hours / minutes. Can you please tell me - how I can store the values of time

syslinux 6.01, on XP cmd prompt: With syslinux.exe --update c: At least one specified option not yet implemented for this installer. it is clear which option is not yet implemented. However, before trying just --update, I did try: syslinux.exe --active --directory /downloadedPrograms/syslinux \ --update --mbr c: (line was edited for presentation purposes) and got

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I have a project that uses syslinux to load the kernels from the CD to create disk and/or partition images. The process works great, but as I have been building newer kernel images with new disk and nic drivers, I have had users run into problems. Example: one users machine would fail at hotplug detection, creating a kernel with this feature off

Hi all, where can I set the date in domU. ''ntpdate -u ...'' works but dosn''t set the date. date MMDDhhmm has also no effect. What can I do? -- cu Roland Kruggel  mailto: rk-liste@gmx.de System: Intel 3.2Ghz, Debian etch, 2.6.15, KDE 3.4 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

Hello, R users, I have two factors (treat, section) anova design experiment where there are 3 replicates. The objective of the experiment is to test if there is significant difference of yield between top (section 9 to 11) and bottom (section 9 to 11) of the fruit tree under treatment. I found that there are interaction between two factors. I wonder if I can contrast means from levels of

Dear, R experts. I have two program codes, one is made by Splus and the other is made by transferring from Splus code. Because "nlminb" function in Splus is equivalent to "optim" in R, I expected to get exactly same result. But, sometime there is too large differece (greater than 2%) between two outputs. I looked two help files. According to those, in Splus, quasi-Newton

Hi all: I've written a function and saved the worksapce.When the workspace of my function is re-open,I want display some introduction or step by step guidance of the function for the users.How can I do it? Thanks a lot! My best regards!

--- "Olle E. Johansson" <oej@edvina.net> wrote: > From: "Olle E. Johansson" <oej@edvina.net> > To: asterisk-users@lists.digium.com > Subject: Re: [Asterisk-Users] Asterisk on FreeBSD > Date: Mon, 27 Oct 2003 08:24:22 +0100 > > Rich Adamson wrote: > > >>My Asterisk (fresh CVS) takes 98% of the system load on my FreeBSD > server.

On 11-Feb-08, at 6:00 PM, Erik de Castro Lopo wrote: > Personally, I think that change should be reverted and another > cleaner solution found to address that problem. Agreed, although it doesn't make that much differece; the code is broken either way. Ivo, if you don't want to do the alternate patch, you might ask the original contributor? -r

Dear all, What is the usage of the ".Call()"? What is the meaning of the follows: S=.Call("RS_fractal_spectral_density_function_direct",x,as.vector(taper.),as.logical(center),as.logical(recenter),TRUE,as.integer(npad),COPY=rep(FALSE,6),CLASSES=c(rep("matrix",2),rep("logical",3),"integer"),PACKAGE="ifultools") And is a function

Hi, I'm trying to create a linear model for a dataset that has a breakpoint e.g. # dummy dataset x <- 1:20 y <- c(1:10,seq(10.5,15,0.5)) plot(x,y) I've modelled this using the following formula: temp <- lm(y ~ x*(x<=10)+x*(x>10)) I want to be able to omit the intercept (i.e. force the line through zero) from the first of these segments (x<=10) so that I'm only

Dear Will, This is exactly what I find. My point is thus that the sum function in R is not a naive sum nor a Kahansum (in all cases), but what algorithm is it using then? Cheers, Rampal On Tue, Feb 19, 2019, 19:08 William Dunlap <wdunlap at tibco.com wrote: > The algorithm does make a differece. You can use Kahan's summation > algorithm

This SO question may be of interest: https://stackoverflow.com/questions/38589705/difference-between-rs-sum-and-armadillos-accu/ which points out that sum() isn't doing anything fancy *except* using extended-precision registers when available. (Using Kahan's algorithm does come at a computational cost ...) On 2019-02-19 2:08 p.m., William Dunlap via R-devel wrote: > The algorithm

Someone said it used a possibly platform-dependent higher-than-double-precision type. By the way, in my example involving rep(1/3, n) I neglected to include the most precise way to calculate the sum: n%/%3 + (n%%3)/3. Bill Dunlap TIBCO Software wdunlap tibco.com On Wed, Feb 20, 2019 at 2:45 PM Rampal Etienne <rampaletienne at gmail.com> wrote: > Dear Will, > > This is exactly

Hi all, While tinkering with saturation instructions, I hit problems with the cost model calculations. The loop vectorizer cost model accumulates the individual TTI cost model of each instruction. For saturating arithmetic, this is a gross overestimate, since you have 2 sexts (inputs), 2 icmps + 2 selects (for the saturation), and a truncate (output); these all fold alway. With an intrinsic,

I'm trying to convert an S-Plus program to R.  Since I'm a SAS programmer I'm not facile is either S-Plus or R, so I need some help.  All I did was convert the underscores in S-Plus to the assignment operator <-.  Here are the first few lines of the S-Plus file:   sshc _ function(rc, nc, d, method, alpha=0.05, power=0.8,              tol=0.01, tol1=.0001, tol2=.005, cc=c(.1,2),

Hello everybody! I've seen that you can connect your cellphone via bluetooth, but I've a Motorola V300 and it doesn't have that feature, so I wish to connect it via USB cable, is it pissible con use my cellphone with asterisk like that? I 've not been able to find information on how to do this, I'l appreciate any help. Thanks in advance! -- Facundo Ameal.