matplotlib: Plot numpy arrays with None as values

Question

I have an array that looks like:

k = numpy.array([(1.,0.001), (1.1, 0.002), (None, None), 
                 (1.2, 0.003), (0.99, 0.004)])

I

Answer 1

You can filter you array doing:

test = np.array([None])
k = k[k!=test].reshape(-1, 2).astype(float)

And then sum up the columns and make the plot. The problem of your approach is that you did not convert the None type to a numpy array, which did not allow the proper creation of the mask.