class visualize:
    '''
    visualization tool to help statistical analysis.

    variables:
        
    functions:
        to_pandas(photdata_array)
        plot_scatter(df,xcol,ycol,args=None)
        plot_periodogram(photdata_array)
        plot_amplitude_spectrum(df)
        plot_OC(df)
    '''
    raise NotImplementedError

class visualize:
    '''
    visualization tool to help statistical analysis.

    variables:
        
    functions:
        to_pandas(photdata_array)
        plot_scatter(df,xcol,ycol,args=None)
        plot_periodogram(photdata_array)
        plot_amplitude_spectrum(df)
        plot_OC(df)
    '''
    raise NotImplementedError

visualization tool to help statistical analysis.      variables:              functions:         to_pandas(photdata_array)         plot_scatter(df,xcol,ycol,args=None)         plot_periodogram(photdata_array)         plot_amplitude_spectrum(df)         plot_OC(df)