保存所有的数据。工作空间中的帧，以分离。rdata文件。

I have several data.frames in an environment which I would like to save into separate .RData files. Is there a function which is able to save to whole workspace?

我在一个环境中有几个data.frame，我想将它们保存到单独的. rdata文件中。是否有一个函数可以保存到整个工作区?

I usually just do this with the following function:

我通常用以下函数来做:

save(x, file = "xy.RData")

but is there a way I could save all the data.frames separately at once?

但是有没有一种方法可以同时保存所有的数据。frame ?

3 个解决方案

#1

Creating a bunch of different files isn't how save() is vectorized. Probably better to use a loop here. First, get a vector of all of your data.frame names.

创建一堆不同的文件并不是save()的矢量方式。最好在这里使用循环。首先，获取所有数据的向量。

dfs<-Filter(function(x) is.data.frame(get(x)) , ls())

Now write each to a file.

现在将每个写入一个文件。

for(d in dfs) {
    save(list=d, file=paste0(d, ".RData"))
}

Or if you just wanted them all in one file

或者你想把它们都放在一个文件里

save(list=dfs, file="alldfs.RData")

#2

To save your workspace you just need to do:

要保存你的工作空间，你只需要:

save.image("willcontainworkspace.RData")

This creates a single file that contains the entire workspace which may or may not be what you want but your question wasn't completely clear to me.

这样就创建了一个包含整个工作区的文件，这个工作区可能是您想要的，也可能不是您想要的，但是您的问题我不是很清楚。

#3

Similar to @MrFlick's approach, you can do something like this:

类似于@MrFlick的方法，您可以做如下事情:

invisible({
  sapply(ls(envir = .GlobalEnv), function(x) {
    obj <- get(x, envir = .GlobalEnv)
    if (class(obj) == "data.frame") {
      save(obj, file = paste0(x, ".RData"))
    }
  })
})

#1