Creates different plots such as ERDS maps, average maps, and so on. This function creates different plots, depending on the content of the input parameter. It is a wrapper function for the specific plot functions in order to allow the user to call the same plot function for all kinds of different plots (ERDS maps, average maps, spectra, heart rate, ...). Usage: plotC(input_struct); Input parameters: input_struct ... Input structure (as obtained by the calculation functions)