search for: lm_f

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2011 Oct 24
1
Creating data frame with residuals of a data frame
...his data frame from the resulting list since the list has differing numbers of rows. So for example: age<- c(5,6,10,14,16,NA,18) value1<- c(30,70,40,50,NA,NA,NA) value2<- c(2,4,1,4,4,4,4) df<- data.frame(age, value1, value2) #Run linear regression to adjust for age and get residuals: lm_f <- function(x) { x<- residuals(lm(data=df, formula= x ~ age)) } resid <- apply(df,2,lm_f) resid<- resid[-1] Then resid is a list with different row numbers: $value1 1 2 3 4 -16.945813 22.906404 -7.684729 1.724138 $value2 1 2...