SciTools/iris — pull request #1432 by cpelley (2014-11-06 11:17:37+00:00)
Title: ENH: Cached cropped_bounds within regrid

See https://github.com/SciTools/iris/pull/1431 for further details.

Going from 30second (21600, 43200) source to N96 (145, 192):
Unoptimised: 43s
Optimised: 26s

Combined with #1431, offers a double in performance of regrid