Dear R wizards: This must have an obvious solution, but I am stumped.
I can run a linear regression giving a matrix as the independent set
of variables, but if I give a data frame (which I would like to give,
because it should tell the linear model the names of the variables), R
does not like it. An example is:
N=20; y= rnorm(N);
x.m <- (matrix( nrow=N, ncol=2 ));
x.m[,1]=rnorm(N); x.m[,2]=rnorm(N);
print(summary(lm(y ~ x.m))); # works
x.d <- as.data.frame(x.m);
names(x.d) <- c("one.rv", "two.rv"); # I would like the summary to
know my variable names!
print(summary(lm(y ~ x.d))); # fails
[please indulge my semi-colons.] how should this be done? help, as
always, appreciated.
sincerely,
/ivo welch
______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
