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...nctions, p.~~ as plot scripts and working.~~ or z.~~ as working.data. Then I use dummy variables, for instance, fxxxxxxxxxxxxxxxxxx~ to delimit the space between functions and plots. This is all done so that ls() returns a well structured workspace. Note that my only organizational structure is the alphbetical nature of the objects rather than object attributes. Splus has solved these issues with the object browser which is complex and non-intuitive. While eventually such a system could be created, it is a large project. ls() returns a vector of names which is useful for language constructs (functio...

Dear R-ers, my task is to simple: to assign cases to desired groupings based on the combined values on 2 variables. I can think of 3 methods of doing it. Method 1 seems to me pretty r-like, but it requires a lot of lines of code - onerous. Method 2 is a loop, so not very good - as it loops through all rows of mydata. Method 3 is a loop but loops through fewer lines, so it seems to me more