Method to_array

filterpy/common/helpers.py:165–185

Convert all saved attributes from a list to np.array. This may or may not work - every saved attribute must have the same shape for every instance. i.e., if `K` changes shape due to `z` changing shape then the call will raise an exception. This can also hap

(self)

        return list(self._DL.keys())

    def to_array(self):
        """
        Convert all saved attributes from a list to np.array.

        This may or may not work - every saved attribute must have the
        same shape for every instance. i.e., if `K` changes shape due to `z`
        changing shape then the call will raise an exception.

        This can also happen if the default initialization in __init__ gives
        the variable a different shape then it becomes after a predict/update
        cycle.
        """
        for key in self.keys:
            try:
                self.__dict__[key] = np.array(self._DL[key])
            except:
                # get back to lists so we are in a valid state
                self.__dict__.update(self._DL)

                raise ValueError(
                    "could not convert {} into np.array".format(key))

    def flatten(self):
        """