similar to: QR-decomposition using the base package vs. Matrix package

Hi, I need some help either in how to configure variables for wireframe(), or some suggestions as to other graphics commands to use for plotting a 2-D manifold in 3-D space. Here is an example I tried (in the hopes that it would plot a helical line) : xsp<-matrix(c(cos(seq(0,80)/5)),9,9) ysp<-matrix(c(sin(seq(0,80)/5)),9,9) zsp<-matrix(c((seq(0,80)/20)),9,9) wireframe(zsp~xsp*ysp)

Hello, I am running an ARMA model to run forecast for changes in S&P 500 prices. My ARMA calculations look as follows armacal <- arma( spdata, order = c(0,4), lag = list(ma = c(1,2,4)) ) Output: Call: arma(x = spdata, order = c(0, 4), lag = list(ma = c(1, 2, 4)) ) Coefficient(s): ma1 ma2 ma4 intercept -0.073868 0.058020 -0.081292 0.007082 All's

Dear R users, I'm estimating a mixed effects model in which the spatial correlation is controlled for by the "corGaus" structure. I'm wondering if there is a document or paper that explains how the spatial correlation structure (such as "corExp" or "corGaus") works. Let me use the example and data posted on UCLA's R FAQ webpage to explain my problems.

Hello, I having trouble running the CAPdiscrim function located in biodiversityR. My data tables are as follows: community data frame (called "spdata") Species1... Speciesn site1.. site2.. siten with abundance data as values. Site names are row names. and environmental data (called "envdata") year elevation site1... site2... siten my command

spData <- as.vector(getYahooData("SPY", start="19900101",end="20081231")[,"Close"]) > cr <- cReturns(spData, ttr = "sma", params=c(20)) Error in ind[t - k] <- pos[t - k + 1] - pos[t - k] : replacement has length zero I am getting the above error when running the cReturns function. Any ideas on this? How does one drill down into

Cada vez que intento cargar el paquete "agricolae" me da el siguiente mensaje: Error: package or namespace load failed for 'agricolae' in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]): there is no package called 'spData' He intentado todo actualizar los paquetes, volverlos a instalar pero no hay forma. Si sabeis la solución ?? Un saludo. Juan

Hello list. I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without modifications. How did I try it? Created a (non-root) build environment (not a mock ) Installed the kernel.scr.rpm and did a rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee prep-out.log The build failed at the end: Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL Checking