search for: 349641

Displaying 1 result from an estimated 1 matches for "349641".

Did you mean: 34641
2009 Aug 25
4
table, xyplot, names, & loops
Hi R community, I'm just starting out in R and have a basic question about xyplot and tables. Suppose I had a table of data with the following names: Height, Age_group, City. I'd like to plot mean Height vs Age_group for each City. When I try to do the following: > library(lattice) > xyplot(mean(Height) ~ Age_group | City) of course I get just one data point, the mean Height for