View dataframes by pasting its name in r

问题

Is there any way to View dataframes in r, while refering to them with another variable? Say I have 10 data frames named df1 to df10, is there a way I can View them while using i instead of 1:10? Example:

df1 = as.data.frame(c(1:20))
i = 1

View(paste("df", i, sep =""))

I would like this last piece of code to do the same as View(df1). Is there any command or similar in R that allows you to do that?

回答1:

The answer to your immediate question is get:

df1 <- data.frame(x = 1:5)
df2 <- data.frame(x = 6:10)
> get(paste0("df",1))
  x
1 1
2 2
3 3
4 4
5 5

But having multiple similar objects with names like df1, df2, etc in your workspace is considered fairly bad practice in R, and instead experienced R folks will prefer to put related objects in a named list:

df_list <- setNames(list(df1,df2),paste0("df",1:2))
> df_list[[paste0("df",1)]]
  x
1 1
2 2
3 3
4 4
5 5

来源：https://stackoverflow.com/questions/36336463/view-dataframes-by-pasting-its-name-in-r