“import as” in R

by

This is not quite what you want because it involves changing from :: notation to $ notation, but if you load a package namespace (without attaching it), you can then refer to it by its environment name:

h <- loadNamespace('Hmisc')
p <- loadNamespace('plyr')

> summarize(iris$Sepal.Length, iris$Species, FUN=mean)
Error: could not find function "summarize"

> Hmisc::summarize(iris$Sepal.Length, iris$Species, FUN=mean)
  iris$Species iris$Sepal.Length
1       setosa             5.006
2   versicolor             5.936
3    virginica             6.588

> h$summarize(iris$Sepal.Length, iris$Species, FUN=mean)
  iris$Species iris$Sepal.Length
1       setosa             5.006
2   versicolor             5.936
3    virginica             6.588

> summarise(iris, x = mean(Sepal.Length))
Error: could not find function "summarise"

> plyr::summarise(iris, x = mean(Sepal.Length))
         x
1 5.843333

> p$summarise(iris, x = mean(Sepal.Length))
         x
1 5.843333

Note, however, that you do lose access to documentation files using the standard ? notation (e.g., ? p$summarise does not work). So, it will serve you well as shorthand, but may not be great for interactive use since you’ll still have to resort to ? plyr::summarise for that.

Note also that you do not have access to the data objects stored in the package using this approach.

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