Re: [R] residuals from lm

On 03/07/12 03:58, chuck.01 wrote: Hi, I was playing around with something else and I noticed this matrix code for residuals in a linear model doesn't say what lm() says. Please tell me if I am completely misguided here. data(mtcars) Y <- as.matrix(mtcars[,1]) X <- as.matrix(mtcars[,c(2:11)])

Re: [R] residuals from lm

nevermind... I forgot the column of 1's for the intercept term chuck.01 wrote > > Hi, > I was playing around with something else and I noticed this matrix code > for residuals in a linear model doesn't say what lm() says. Please tell > me if I am completely misguided here. > > data(mtcars) >

[R] residuals from lm

Hi, I was playing around with something else and I noticed this matrix code for residuals in a linear model doesn't say what lm() says. Please tell me if I am completely misguided here. data(mtcars) Y <- as.matrix(mtcars[,1]) X <- as.matrix(mtcars[,c(2:11)]) # shouldnt this: H <- X %*% solve(

Re: [R] residuals from lm

FYI: As you are likely thinking: this doesn't belong here (It just occurred to me), I am questioning what I did, not the output of lm() But if someone knows why I am wrong please let me know. chuck.01 wrote > > Hi, > I was playing around with something else and I noticed this matrix code > fo