provide a more helpful error message for wrong wavelet type #337
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In current master, providing the name of a continuous wavelet to a discrete transform such as
wavedecn
results in the non-obviousAttributeError
shown in #333This PR provides a helpful error message when discrete transforms are called with either a
ContinuousWavelet
object or a name corresponding to aContinuousWavelet
. In all cases, the error message is provided either directly via_as_wavelet
(or indirectly via_wavelets_per_axis
).New tests verify that a
ValueError
rather thanAttributeError
is raised for each of the discrete transforms.closes #333