Names of a data set in a package
2011/4/5 G?ran Brostr?m <gb at stat.umu.se>:
For some reason I want to let one data set in a package be known under two different names. ?Is that possible, and if so, how? I do not want to have two copies of the data set in the package.
This will allow you to read the data frame under a different name but you won't be able to modify it under the different name. We make use of the built in data frame BOD and create the alternate name BOD2:
makeActiveBinding("BOD2", function() BOD, .GlobalEnv)
BOD$Time
[1] 1 2 3 4 5 7
BOD2$Time
[1] 1 2 3 4 5 7
# changing BOD also changes BOD2 BOD$Time[1] <- 99 BOD2$Time
[1] 99 2 3 4 5 7
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