Displaying 1 result from an estimated 1 matches for "measurecols".
2006 Oct 19
2
Getting group size in a data frame
Hi all,
I have a data frame with some measured values of some animals. Sometimes the
measurement failed, resulting in a NA for a measurement and sometimes the
animal died, resulting in NA for all measurements.
I have several groups of animals. How do I find the size of each group with
only alive animals? And how do I find the size of the groups for each
measurement?
An example:
l1 <-