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Signal Processing

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  • $\begingroup$ I used the second option (all functionality latest stable) and running the code gives the error AssertionError: must have at least 3 filters in filterbank (got 1) $\endgroup$ Commented Mar 14, 2022 at 13:44
  • $\begingroup$ Increasing Q to 3 gives the error: ValueError: max() arg is an empty sequence $\endgroup$ Commented Mar 14, 2022 at 13:47
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    $\begingroup$ @rshah I do not reproduce your errors. Running your code gave different errors, so I edited the working version into your question. Data loads batches into axis 1, but must be axis 0 as mentioned (also in docs). $\endgroup$ Commented Mar 14, 2022 at 16:21
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    $\begingroup$ @rshah That's right. And, they're here in help(Scattering1D). Unfortunately there aren't built-in visuals (or examples) for properly visualizing the second order; the true structure is shown here under "CWT, second order". $\endgroup$ Commented Mar 15, 2022 at 14:27
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    $\begingroup$ @rshah That's expanding the scope of the question, but briefly, order0 and order1 are fully proper, order2 is "unrolled". $\endgroup$ Commented Mar 15, 2022 at 14:38