search for: fitness_data

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

2009 Oct 22
1
tapply with multiple arguments that are not part of the same data frame
Hi all, I would like to invoke a function that takes multiple arguments (some of which are specified columns in the data frame, and others that are independent of the data frame) on split parts of a data frame, how do I do this? For example, let's say I have a data frame >fitness_data name height weight country rob 5.8 200 usa nancy 5.5 140 germany jen 5.6 150 usa clark 5.10 210 germany matt 5.9 280 canada ralph 6 270 canada ... ... Now let us say I have a function, my_func(h, w, n...