Introduction

CosmoToolbox is a C++ library which I have implemented for solving specific programming problems that I met while doing my research in cosmology. It is a random set of codes that I have abstracted to be reusable in a number of situations.

The following code are implemented:

• loading snapshot files from Ramses and Gadget 1 & 2 snapshots
• reading and writing unformatted fortran binary file
• building and walking through KD-Trees (simple and leaf)
• a general 1d interpolation
• a tri-linear 3d interpolator
• interpolating on a Delaunay tesselation
• adaptive smoothing (Colombi, Chodorowski & Teyssier 2007, ArXiV)
• Compute the linear growth factor for different cosmologies
• A wrap-up around NetCDF to quickly dump large arrays and load them in Yorick (http://yorick.sourceforge.net)
• a general purpose queue handler, for which the queue may only achieve a maximum length (this is useful for implementing  KD-Tree)

Here is a list of the currenly available classes and/or modules (when available a link to the documentation page is included):

• KDTree
• Simulation loading
• Interpolate
• Interpolate3D
• Cosmology (power spectrum, growth factor)
• Adaptive smoothing
• Yorick I/O

Building instructions

CosmoToolbox uses CMake for the building machinery.