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difference between 'join' and 'cat' method in wrf-python


New member
hi everyone i have a question about this wrf-python tutorial: wrf-python tutorial

This is an awesome tutorial, and I appreciate it. However, I am having issues with the "cat" method and the "join" method. Specifically, the problem is that we have three files, and each file has four times. I am confused as to why the "cat" method is returning only nine indices instead of twelve. Shouldn't it be twelve?