First, here's the problem I'm working on so you understand the context. I
have a data frame of travel activity characteristics with 70,000+ records.
These activities are identified by unique chain numbers. (Activities are
part of trip chains.) There are 17,500 chains.
I use the chain numbers as
[EMAIL PROTECTED] writes:
What I've found, however, is that it is not easy (or I have not found the
easy way) to split a named vector into a list that retains the vector names.
For example, splitting an unnamed vector (70,000+) based on the chain
numbers takes very little time:
