[re_with_feedback] Deprecation Issue in Numpy

[mmcky]

/tmp/ipykernel_4089/4040936680.py:9: DeprecationWarning: Conversion of an array with ndim > 0 to a scalar is deprecated, and will error in future. Ensure you extract a single element from your array before performing this operation. (Deprecated NumPy 1.25.)
  m_seq[0] = G @ x0
/tmp/ipykernel_4089/4040936680.py:10: DeprecationWarning: Conversion of an array with ndim > 0 to a scalar is deprecated, and will error in future. Ensure you extract a single element from your array before performing this operation. (Deprecated NumPy 1.25.)
  p_seq[0] = F @ x0
/tmp/ipykernel_4089/4040936680.py:18: DeprecationWarning: Conversion of an array with ndim > 0 to a scalar is deprecated, and will error in future. Ensure you extract a single element from your array before performing this operation. (Deprecated NumPy 1.25.)
  m_seq[t+1] = G @ x
/tmp/ipykernel_4089/4040936680.py:19: DeprecationWarning: Conversion of an array with ndim > 0 to a scalar is deprecated, and will error in future. Ensure you extract a single element from your array before performing this operation. (Deprecated NumPy 1.25.)
  p_seq[t+1] = F @ x

[mmcky]

@HumphreyYang not sure why this error is coming up

<ipython-input-7-ab9e2905e28b>:9: DeprecationWarning: Conversion of an array with ndim > 0 to a scalar is deprecated, and will error in future. Ensure you extract a single element from your array before performing this operation. (Deprecated NumPy 1.25.)
  m_seq[0] = G @ x0

To me this code looks like matrix multiplication between two vectors where both G and x0 have dimension of 3. Any ideas? What am I missing here.

[HumphreyYang]

I think G @ x0 gives a nested array so it has ndim > 0 (e.g. [[0]]), but it is assigned to m_seq[0] as a scalar. So we can probably fix this by [m_seq[0]] = G @ x0.

I can have a go tomorrow once I finish my presentation.

[mmcky]

Ah! smart.

We could also try the RHS as (G @ x0)[0] but it's pretty ugly notation.