How to print the first six values of a list of data frames

Question

I was trying out this code. I want to print the first six values of both the dataframes. But this isn't working. Where am I going wrong?

d1 = mtcars
d2 = Arthritis
d = list(d1,d2)
for(i in 1:2)
{
  head(d[[i]])
  }

I tried it without the for loop and it works. I mean if I put in head(d[[1]]) I get the first six values of mtcars. But with the loop it is not printing anything

Enclose `head(d[[i]])` inside the the `print( )` function. – Dave2e Aug 03 '19 at 04:00 — Dave2e, Aug 03 '19 at 04:00
or `lapply(d, head)` and no need to call `print()` – paqmo Aug 03 '19 at 04:02 — paqmo, Aug 03 '19 at 04:02

score 0 · Answer 1 · answered Aug 03 '19 at 07:59

0

Automatic printing is turned off inside loops and functions (explained here). To print inside of a loop or function, explicitly call the print() function.

d1 <- mtcars
d2 <- data(iris)
d  <- list(d1,d2)
for(i in 1:2) {
  print(head(d[[i]]))
}

answered Aug 03 '19 at 07:59

tim

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How to print the first six values of a list of data frames

1 Answers1