[api-dev] Extremely slow performance with getCellByPosition

[Scott Deerwester]

That's exactly what I needed. Thank you so much. The time went from two
hours down to about six seconds. I still don't understand why using
getCellByPosition is so horribly slow, but my particular application doesn't
depend on it now, so I'm happy. If I can be of any help tracking down the
source of the abysmal performance, please don't hesitate to ask.