# Method countTrueAxis

#### static member countTrueAxis: int -> Tensor<bool> -> Tensor<int64>

Counts the elements being true along the specified axis.

##### Declaration

`static member countTrueAxis: ax:int -> src:Tensor<bool> -> Tensor<int64>`

##### Parameters

Type | Name | Description |
---|---|---|

int | ax | The axis the count along. |

Tensor<bool> | src | The tensor containing the source values. |

##### Returns

Type | Description |
---|---|

Tensor<int64> | A new tensor containing the result of this operation. |

##### Remarks

The number of elements that are true is accumulated along the specified axis.

##### Examples

```
let a = HostTensor.ofList2D [[true; false; true; false]
[false; true; true; false]]
let b = Tensor.countTrueAxis 1 a // b = [2L; 2L]
```