LorDG 1.0 is a software tool to build 3D genome/chromosome models from chromosomal conformation capturing data (or chromosomal contact data). It is a distance-based approach. It uses Lorentzian function to measure the fit between a 3D model and chromosomal contact data. The method achieved the state of the art performance and is capable of building 3D models of large genomes. More information about the method is described in this paper: https://academic.oup.com/nar/article/45/3/1049/2605802 .