BUG: np.zeros input formatted incorrectly in rtp.py

[carleyjmartin]

BUG

We noticed that np.zeros in rtp.py line 344 is incorrectly formatted.
This line hasn't been changed in over 5 years so assuming the conditions that cause this to trigger are not done very often as we haven't had any complaints about it yet - to the point where we can't get it to to trigger a lot of the time.

I recommend checking all uses of np.zeros across pyDARN to check for this error as there are two instances in rtp.py where the line should read np.zeros([1, y_max]) instead of np.zeros(1, y_max).

I also recommend looking at refactoring this section of code to make it more obvious in what it's trying to do.

Priority

• Minor - typo, incorrect naming, fails on specific uncommon situation
• Major - misrepresentation of data, failure in a common situation
• Urgent - failure in usage, large misrepresentation