Names of a data set in a package

2011/4/5 G?ran Brostr?m <gb at stat.umu.se>:

5 apr 2011 kl. 18.25 skrev Gabor Grothendieck:

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

Thanks Gabor, but where do I put this in my package? To clarify, I want

data(B, package = "A")

and

data(C, package = "A")

refer to the same data set.

Implement your datasets as .R files.  See ?data and the source to the
quantreg package, say, as it uses .R files for its data.

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