Numpy: Problems to interpret since 1.26.x

[abuech2s]

Using WSL and the automatically installed library Numpy 1.26.4 the following script https://github.com/balzer82/Kalman/blob/master/Kalman-Filter-CV.ipynb has several problems to run:

• Method savestates will yield into the error: /tmp/ipykernel_9042/304566162.py:21: 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.) xt.append(float(x[0]))
• Method plot_x() will yield into the error ValueError: x and y can be no greater than 2D, but have shapes (200,) and (200, 1, 1)

Is there a chance to adapt the current code to a runnable version?

Thanks