how to set dtype for nested numpy ndarray?
问题 I am working on the following data structure, from which I am trying to create a ndarray contains all the data: instrument filter response ----------------------------------------------------- spire 250um array of response ... ... ... where the array of response is: linenumber wavelangth throughput ----------------------------------------------------- 0 1.894740e+06 0.000e+00 1 2.000000e+06 1.000e-02 2 2.026320e+06 3.799e-02 ... .... .... So, I hope I can turn the data to one ndarray, by