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mindspore.ops.ExpandDims

class mindspore.ops.ExpandDims(*args, **kwargs)[source]

Adds an additional dimension to ‘input_x` at the given axis.

Note

If the specified axis is a negative number, the index is counted backward from the end and starts at 1.

Inputs:

input_x (Tensor) - The shape of tensor is $(x_{1}, x_{2}, . . ., x_{R})$ .
axis (int) - Specifies the dimension index at which to expand the shape of input_x. The value of axis must be in the range [-input_x.ndim-1, input_x.ndim]. Only constant value is allowed.

Outputs:

Tensor, the shape of tensor is $(1, x_{1}, x_{2}, . . ., x_{R})$ if the value of axis is 0. It has the same data type as input_x.

Raises: ValueError – If axis is not an int or not in the valid range.

Supported Platforms:: Ascend GPU CPU

Examples

>>> input_tensor = Tensor(np.array([[2, 2], [2, 2]]), mindspore.float32)
>>> expand_dims = ops.ExpandDims()
>>> output = expand_dims(input_tensor, 0)
>>> print(output)
[[[2. 2.]
  [2. 2.]]]