我可以告诉R plyr软件包默认情况下并行工作吗? [英] Can I tell the R plyr package to work in parallel by default?

问题描述

我正在做这样的分析:

library(plyr)
input.files <- c("file1.txt", "file2.txt", "file3.txt")
input.data <- llply(input.files, load.file, .parallel=TRUE)
step.one.results <- llply(input.data, step.one, .parallel=TRUE)
step.two.results <- llply(step.one.results, step.two, .parallel=TRUE)
...
step.N.results <- llply(`step.N-1.results`, step.N, .parallel=TRUE)
...

默认情况下是否有任何方法可以使所有plyr函数并行化，所以我不必总是为每个步骤都指定.parallel=TRUE吗?

Is there any way to make all the plyr functions parallel by default, so I don't always have to specify .parallel=TRUE for each step?

推荐答案

library(Defaults)
setDefaults(llply, .parallel=TRUE)

对于要更改其默认形式的每个函数，您都必须按setDefaults.您可以根据需要将其放在.Rprofile中.

You'd have to setDefaults on every function for which you want to change the default formals. You can put this in your .Rprofile if you like.

您也可以直接将正式服装弄乱.例如 formals(llply)$.parallel <- TRUE应该可以.

You can also mess with the formals directly. e.g. formals(llply)$.parallel <- TRUE should work.

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