vectorization of the interpolation in PyGSM2016

[steven-murray]

The 2008 maps have vectorized interpolation (i.e. there's no loop through each frequency in the generate() function). However, the 2016 generate() method does this loop. I feel like this is unnecessarily inefficient, but wasn't game to fix it up myself without a better knowledge of exactly what's going on in the loop.

Is there a reason it has been done differently? If not, would you like me to have a go at vectorizing it?

[telegraphic]

Hey @steven-murray - you are most welcome to give it a whirl 👍