I think there might be. According to the [matplotlib docs](http://matplotlib.org/api/pyplot_api.html), the call signature for pyplot.subplot is:
```
subplot(nrows, ncols, plot_number)
```
I'm inferring that `n_wide` corresponds to how wide the faceted figure is in plots—_i.e._ the number of columns in the figure—and that `n_high` corresponds to the number of rows. The first couple of times that `pyplot.subplots` is called, `n_high` is passed first to correspond with `nrows`. Beginning on line 167, however, they're swapped and `n_wide` is passed first.

I haven't had a chance yet to implement a change and test it.