search for: mn3

...r any help! >library(MASS) > dif.mns = function(x2,tr1=.2,tr2=.3){ + #generates four different 'means' using + #difference scores from x2, an n x 2 matrix + #for use w/ bootstrap comparisons + diffs = apply(x2,1,diff) + mn1=mean(diffs) + mn2=mean(diffs,tr=.2) + mn3=mean(diffs,tr=.3) + mn4=median(diffs) + mns=c(mn1,mn2,mn3,mn4) + list(mnds=round(mns,3)) } > dif.mns(shoes) Error in apply(x2, 1, diff) : dim(X) must have a positive length -- View this message in context: http://r.789695.n4.nabble.com/Error-in-apply-x2-1-diff-dim-X-must-have-a-positi...

...esults. Here is how I am using it #Mn.mat<-(T.mat %*% Rz.mat %*% Q.mat %*% Rz.mat %*% T.mat) # I was doing this in one step which I have broken down into multiple steps as below. Mn1.mat<-matrix(as.numeric(T.mat %*% Rz.mat),nrow=4) Mn2.mat<-matrix(as.numeric(Mn1.mat %*% Q.mat),nrow=4) Mn3.mat<-matrix(as.numeric(Mn2.mat %*% Rz.mat),nrow=4) Mn.mat<-matrix(as.numeric( Mn3.mat %*% T.mat),nrow=4) For getting the inverse I am doing the following Mn.mat.inv<-qr.solve(Mn.mat) Will I run into precision problems when I do the above? Thanks ../Murli

...t value Pr(>|t|) Qn1 38.13977 0.9911148 38.48169 1.991990e-06 Qn2 42.87169 1.0932089 39.21638 2.583953e-06 Qn3 44.22800 1.0241029 43.18706 1.809264e-07 Qc1 36.42874 1.1941594 30.50576 1.140085e-05 Qc3 40.68373 1.2480923 32.59673 1.424635e-04 Qc2 39.81950 1.0167249 39.16447 2.692304e-06 Mn3 28.48286 1.0624246 26.80930 1.066434e-06 Mn2 32.12827 1.0174826 31.57624 3.488786e-06 Mn1 34.08482 1.3400596 25.43530 4.199333e-06 Mc2 13.55519 1.0506404 12.90184 4.385886e-06 Mc3 18.53506 0.8363371 22.16219 1.461563e-06 Mc1 21.78723 1.4113318 15.43735 5.756870e-06 > summary(fm1)$coef[,,1...

Hi, I'm very new to R and absolutely love it. Does anyone know how to use something in R that functions like a BY command in SAS? For example, let's say you have a variable x, and you want to see the mean. Easy... > mean(x) But what if you want to see the mean of x conditional on another discrete variable? My best attempts so far are something like... > mean(x, y_cat=1)

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