# numpy.absolute

numpy.absolute(x, /, out=None, *, where=True, casting='same_kind', order='K', dtype=None, subok=True[, signature, extobj]) = <ufunc 'absolute'>

  Calculate the absolute value element-wise.

  `np.abs` is a shorthand for this function.

  Parameters
    x array_like

      Input array.

    out ndarray, None, or tuple of ndarray and None, optional

      A location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned. A tuple (possible only as a keyword argument) must have length equal to the number of outputs.

    where array_like, optional

      This condition is broadcast over the input. At locations where the condition is True, the out array will be set to the ufunc result. Elsewhere, the out array will retain its original value. Note that if an uninitialized out array is created via the default `out=None`, locations within it where the condition is False will remain uninitialized.

    **kwargs

      For other keyword-only arguments, see the ufunc docs.

  Returns
    absolute ndarray

      An ndarray containing the absolute value of each element in x. For complex input, `a + ib`, the absolute value is \(\sqrt{ a^2 + b^2 }\). This is a scalar if x is a scalar.

  Examples

      >>> x = np.array([-1.2, 1.2])
      >>> np.absolute(x)
      array([ 1.2,  1.2])
      >>> np.absolute(1.2 + 1j)
      1.5620499351813308

  Plot the function over `[-10, 10]`:

      >>> import matplotlib.pyplot as plt

      >>> x = np.linspace(start=-10, stop=10, num=101)
      >>> plt.plot(x, np.absolute(x))
      >>> plt.show()

  Plot the function over the complex plane:

      >>> xx = x + 1j * x[:, np.newaxis]
      >>> plt.imshow(np.abs(xx), extent=[-10, 10, -10, 10], cmap='gray')
      >>> plt.show()

  The `abs` function can be used as a shorthand for `np.absolute` on ndarrays.

      >>> x = np.array([-1.2, 1.2])
      >>> abs(x)
      array([1.2, 1.2])

previous

numpy.square

next

numpy.fabs