--key: list the keys in the npz file--tag: list the tag in the npz file--verbose: verbose level
--cat: Concatenating arrays--stack: Stacking arrays
--summary: summarize the data--sig_dig: number of significant digits--print: print the data--p_bar: show a progress bar--table_fmt: Table format, as intabulatepython module
--plot: plot the data--line_plot: plot the data as a line plot--line_plot_opt: Line plot options--hist1D: plot the data as a histogram--hist1D_opt: Histogram plot options--get_frequency: get the frequency of the data--scatter: plot the data as a scatter plot--scatter3D: plot the data as a 3D scatter plot--image_plot: view the data as images--no_pool: pool the plots on a single figure--fig_size: figure size--add_grid: add a grid--x_label: x label--y_label: y label--x_lim: x limit--y_lim: y limit--y_log: y axis in log scale--eq_axs: equalize the axes--title: title--no_axs: no axes--tight_layout: tight layout
--scale: scale the data--shift: shift the data
--files: list the files in the directory--merge: merge the files--append:--remove: a list of keys to be removed from the*.npzfile--rename: a pair of keys to be renamed, in the order of source and target
--saveas: save the data as a file--saveas_json: save the data as a json file--saveas_dat: save the data as a text file--log_dir: log directory
--r2_score: R^2 score of two arrays