A challenging but critical aspect of studying novel foldamers is identifying the native configuration in the folded state(s), without any prior knowledge or expectation. Key parameters defining the native state are the specific pairs of particles which are in proximity to one another, and the distances separating these native pairs. The fraction of native contacts is an important metric for classifying each conformation in a simulation trajectory as 'folded' or 'unfolded', which is necessary for computing the free energy of folding and other related thermodynamic quantities.