Hi, The matplotlib.collections.Collection documentation reads: "All properties in a collection must be sequences or scalars; if scalars, they will be converted to sequences. The property of the ith element of the collection is: prop[i % len(props)]". I had a look at the docstring documentation from ipython, but I didn't find out how the above is achieved (I am learning Python together with numpy, matplotlib, etc.). In my own code, how could I do something like this? If you point to a relevant location on the source code, that's alright. I also get confused sometimes because of the multiple (and sometimes interchangeable) ways of specifying arguments: sequences (list, tuples), numpy arrays, etc. I started using almost exclusively numpy arrays (probably due to my matlab background), but I am starting to mix a bit of everything now (depending on what "sources of inspiration" I use), so I wondered what a good guideline would be.
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