# Applies a 3D adaptive max pooling over an input signal composed of several input planes.

Source:`R/nn-pooling.R`

`nn_adaptive_max_pool3d.Rd`

The output is of size D x H x W, for any input size. The number of output features is equal to the number of input planes.

## Arguments

- output_size
the target output size of the image of the form D x H x W. Can be a tuple (D, H, W) or a single D for a cube D x D x D. D, H and W can be either a

`int`

, or`None`

which means the size will be the same as that of the input.- return_indices
if

`TRUE`

, will return the indices along with the outputs. Useful to pass to`nn_max_unpool3d()`

. Default:`FALSE`

## Examples

```
if (torch_is_installed()) {
# target output size of 5x7x9
m <- nn_adaptive_max_pool3d(c(5, 7, 9))
input <- torch_randn(1, 64, 8, 9, 10)
output <- m(input)
# target output size of 7x7x7 (cube)
m <- nn_adaptive_max_pool3d(7)
input <- torch_randn(1, 64, 10, 9, 8)
output <- m(input)
}
```