Sorting leads in test_model.py script

[ryan clark]

Hi Organizers,

I was wondering if there should be a sort_leads function after loading the leads on line 48 in the test_model.py script. When the leads are loaded into the required lead set, they are sorted, but they aren't sorted when the individual header for testing is loaded. For example, when testing my six lead model, the dictionary required_lead_sets stores the leads as ('I', 'II', 'III', 'aVR', 'aVL', 'aVF'), however the header stores the leads as ('I', 'II', 'III', 'aVL', 'aVR', 'aVF'). This causes a keyerror when trying to load the model. Sorting the leads when the header for the individual testing example would solve this problem.

Thanks,

Ryan

[PhysioNet Challenge]

Dear Ryan,

Good observation. I updated the test_model.py script to sort the leads more consistently when loading the models.

As you noticed, the order of the leads in the header and signal files doesn't actually matter, i.e., it's the same information, so this is just a way to consistently identify the models corresponding to the different lead combinations.

Best,

Matt

(On behalf of the Challenge team.)

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