如何通过使用字符串在R中选择数据帧

Question

If I have a lots of dataframes which are called Df001 , Df002 , Df003 ,..., Df100 .

How could I access a specific location in every dataframe.

For example, I want to assign:

Df001[1, 3] = a
Df002[2, 4] = b  
... 

(a,b are some values read from a file)

But I don't want to type this codes in details because there are many dataframes needed to be assigned.

Are there some methods that use string to select a dataframe and assign value?

Answer 1

The comment by @MrFlick is appropriate - you should turn all of these into a list or something.

But if you really want to do what you asked, then looping through assign() commands would work. Something like this (it can probably be made prettier):

    for (i in 1:100) {
      tmp.name <- paste0("Df", paste0(paste0(rep("0", 3 - nchar(i)), collapse=""), i))
      tmp.df <- get(tmp.name)
      tmp.df[1, 3] = a
      assign(tmp.name, tmp.df)
    }