up-sampling algorithm & Gramian Angular Field Time Sequence processing method towards photospheric magnetic parameters

magnetic_para_distributionplot_and_sampling_methods.py:Selective up sampling of unbalanced data of solar photospheric magnetic parameters and comparison with different methods in the solar flare prediction.GafCNN_magnetic_para_time_array_processing.py: Time series of very irregular magnetic parameters are normalized and expressed on the GAF image. I retain the strength information and time information, and design the corresponding CNN network