Dear Prof. Higashi,
I am quite new to pyEDM and have been using your code to predict algal blooms using species interactions. For some species pairs i have been getting the error mentioned above Failed to generate surrogate in {max_iter} iterations when I try to carry out CCM with surrogate analysis. Could you let me know the reason why it fail to generate surrogates, so that I can remove such species pairs from the code. I do not specifically understand each line of the code, but I have a very basic idea. Sorry for the inconvenience, if it is a basic question.