rray_squeeze()
is conceptually similar to base::drop()
, but it allows
for the specification of specific dimensions to squeeze.
rray_squeeze(x, axes = NULL)
x  A vector, matrix, array or rray. 

axes  An integer vector specifying the size 1 dimensions to drop. If

x
with the axes
dropped, if possible.
The dimension name handling of rray_squeeze()
is essentially identical to
drop()
, but some explanation is always helpful:
Dimension names are removed from the axes that are squeezed. So squeezing
a (2, 1, 2)
object results in a (2, 2)
object using the dimension names
from the original first and third dimensions.
When all dimensions are squeezed, as in the case of (1, 1, 1)
, then
the first dimension names that are found are the ones that are used in the
(1)
result.
#> <rray<int>[10]> #> [1] 1 2 3 4 5 6 7 8 9 10# Multiple squeezed dimensions # (10, 1, 1) > (10) y < rray_reshape(x, c(10, 1, 1)) rray_squeeze(y)#> <rray<int>[10]> #> [1] 1 2 3 4 5 6 7 8 9 10# Use `axes` to specify dimensions to drop # (10, 1, 1) > drop 2 > (10, 1) rray_squeeze(y, axes = 2)#> <rray<int>[,1][10]> #> [,1] #> [1,] 1 #> [2,] 2 #> [3,] 3 #> [4,] 4 #> [5,] 5 #> [6,] 6 #> [7,] 7 #> [8,] 8 #> [9,] 9 #> [10,] 10# Dimension names are kept here # (10, 1) > (10) x < rray_set_row_names(x, letters[1:10]) rray_squeeze(x)#> <rray<int>[10]> #> a b c d e f g h i j #> 1 2 3 4 5 6 7 8 9 10#> <rray<int>[10]> #> a b c d e f g h i j #> 1 2 3 4 5 6 7 8 9 10