Connecting cosmological simulations to real-world observational programs is often complicated by a mismatch in geometry: while surveys often cover highly irregular cosmological volumes, simulations are customarily performed in a periodic cube. We describe a technique to remap this cube into elongated box-like shapes that are more useful for many applications. The remappings are one-to-one, volume-preserving, keep local structures intact, and involve minimal computational overhead.
The Astrophysical Journal Supplement Series
- Pub Date:
- October 2010
- large-scale structure of universe;
- methods: numerical;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- 4 pages, 4 figures. Companion material at http://mwhite.berkeley.edu/BoxRemap/