spectrochempy.ones

ones(shape, dtype=None, **kwargs)[source]

Return a new NDDataset of given shape and type, filled with ones.

Parameters:

  • shape (int or sequence of ints) – Shape of the new array, e.g., (2, 3) or 2 .

  • dtype (data-type, optional) – The desired data-type for the array, e.g., numpy.int8 . Default is

  • **kwargs – Optional keyword parameters (see Other Parameters).

Returns:

ones – Array of ones .

Other Parameters:

  • units (str or ur instance) – Units of the returned object. If not provided, try to copy from the input object.

  • coordset (list or Coordset object) – Coordinates for the returned object. If not provided, try to copy from the input object.

See also

zeros_like

Return an array of zeros with shape and type of input.

ones_like

Return an array of ones with shape and type of input.

empty_like

Return an empty array with shape and type of input.

full_like

Fill an array with shape and type of input.

zeros

Return a new array setting values to zero.

empty

Return a new uninitialized array.

full

Fill a new array.

Examples

>>> nd = scp.ones(5, units='km')
>>> nd
NDDataset: [float64] km (size: 5)
>>> nd.values
<Quantity([       1        1        1        1        1], 'kilometer')>
>>> nd = scp.ones((5,), dtype=np.int, mask=[True, False, False, False, True])
>>> nd
NDDataset: [int64] unitless (size: 5)
>>> nd.values
masked_array(data=[  --,        1,        1,        1,   --],
             mask=[  True,   False,   False,   False,   True],
       fill_value=999999)
>>> nd = scp.ones((5,), dtype=np.int, mask=[True, False, False, False, True], units='joule')
>>> nd
NDDataset: [int64] J (size: 5)
>>> nd.values
<Quantity([  --        1        1        1   --], 'joule')>
>>> scp.ones((2, 2)).values
array([[       1,        1],
       [       1,        1]])