I have produced an article for publication and I have just been informed that I must produce all maps in colour and greyscale as the printed journal is only published in greyscale but the article will be made available in full colour for download. I'm looking for advice/guidance on making the below maps suitable for printing in greyscale but still easily understood.
How should I display the different layers (the vulnerability ranking, the centroids, the flood zone etc.) so that the entire map remains easily identifiable and understood when printed in greyscale?