How do you suppress the column classes when displaying tibbles? For example,
> cars <- as_tibble(mtcars)
> cars
# A tibble: 32 x 11
mpg cyl disp hp drat wt qsec vs am gear carb
<dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> # <-- I don't want to show this row
1 21 6 160 110 3.9 2.62 16.5 0 1 4 4
2 21 6 160 110 3.9 2.88 17.0 0 1 4 4
3 22.8 4 108 93 3.85 2.32 18.6 1 1 4 1
4 21.4 6 258 110 3.08 3.22 19.4 1 0 3 1
5 18.7 8 360 175 3.15 3.44 17.0 0 0 3 2
6 18.1 6 225 105 2.76 3.46 20.2 1 0 3 1
7 14.3 8 360 245 3.21 3.57 15.8 0 0 3 4
8 24.4 4 147. 62 3.69 3.19 20 1 0 4 2
9 22.8 4 141. 95 3.92 3.15 22.9 1 0 4 2
10 19.2 6 168. 123 3.92 3.44 18.3 1 0 4 4
# ... with 22 more rows
Is there a global option? Something along the lines of options("show.tibble.column.classes"=FALSE).
I'd also like to remove them for all output created from a tibble (tbl_df).
> count(cars, cyl)
# A tibble: 3 x 2
cyl n
<dbl> <int> # <-- omit this row totally.
1 4 11
2 6 7
3 8 14
Is this what you want?
cat(format(as_tibble(mtcars))[-3L], sep = "\n")
Output
# A tibble: 32 x 11
mpg cyl disp hp drat wt qsec vs am gear carb
1 21 6 160 110 3.9 2.62 16.5 0 1 4 4
2 21 6 160 110 3.9 2.88 17.0 0 1 4 4
3 22.8 4 108 93 3.85 2.32 18.6 1 1 4 1
4 21.4 6 258 110 3.08 3.22 19.4 1 0 3 1
5 18.7 8 360 175 3.15 3.44 17.0 0 0 3 2
6 18.1 6 225 105 2.76 3.46 20.2 1 0 3 1
7 14.3 8 360 245 3.21 3.57 15.8 0 0 3 4
8 24.4 4 147. 62 3.69 3.19 20 1 0 4 2
9 22.8 4 141. 95 3.92 3.15 22.9 1 0 4 2
10 19.2 6 168. 123 3.92 3.44 18.3 1 0 4 4
# ... with 22 more rows
Explanations
?tibble::print.tbl shows that the class tbl_df is associated with the following format method:
Usage
## S3 method for class 'tbl_df'
format(x, ..., n = NULL, width = NULL, n_extra = NULL)
The format method converts a tibble into a character vector, each element of which is a line to be printed. The third line is for variable types. To get the desired output, we just need to remove that line and cat() the rest as is.