The DTFE public software: The Delaunay Tessellation Field Estimator code

TL;DR

The paper introduces the DTFE public software, a C++ tool for reconstructing fields from discrete data points, optimized for cosmological analysis but adaptable to other disciplines, featuring multiple interpolation methods and parallel processing.

Contribution

It provides a versatile, open-source implementation of the Delaunay Tessellation Field Estimator with extensive options and comparison tools, enhancing data analysis in cosmology and beyond.

Findings

Efficient reconstruction of fields from discrete samples.

Compatibility with 2D and 3D data, including simulations and surveys.

Includes multiple interpolation methods for comparison.

Abstract

We present the DTFE public software, a code for reconstructing fields from a discrete set of samples/measurements using the maximum of information contained in the point distribution. The code is written in C++ using the CGAL library and is parallelized using OpenMP. The software was designed for the analysis of cosmological data but can be used in other fields where one must interpolate quantities given at a discrete point set. The software comes with a wide suite of options to facilitate the analysis of 2- and 3-dimensional data and of both numerical simulations and galaxy redshift surveys. For comparison purposes, the code also implements the TSC and SPH grid interpolation methods. The code comes with an extensive user guide detailing the program options, examples and the inner workings of the code. The DTFE public software and further information can be found at http://www.astro.rug.nl/~voronoi/DTFE/dtfe.html .