simpeg.maps.ExpMap.inverse#

ExpMap.inverse(D)[source]#

Apply the inverse of the exponential mapping to an array.

For the exponential mapping $\mathbf{u}(\mathbf{m})$, the inverse mapping on a variable $\mathbf{x}$ is performed by taking the natural logarithms of elements, i.e.:

$$\mathbf{m}={\mathbf{u}}^{-1}(\mathbf{x})=log(\mathbf{x})$$

Parameters:

Dnumpy.ndarray

A set of input values

Returns:

numpy.ndarray

A numpy.ndarray containing result of applying the inverse mapping to the elements in D; which in this case is the natural logarithm.