MATLAB 2019a (MathWorks, Natick, MA, USA) and the density estimation program “PDFestimator” were used to generate all the data presented in this work. The PDFestimator is a C++ program that JF and DJ developed as previously reported [11 (link)], which has the original Java program in supporting material. Upgrades on the PDFestimator are continuously being made on the BioMolecular Physics Group (BMPG) GitHub website, Available online: https://github.com/BioMolecularPhysicsGroup-UNCC/PDF-Estimator, where the source code is freely available, including a MATLAB interface to the C++ program. An older C++ version is also available in R, https://cran.r-project.org/web/packages/PDFEstimator/index.html. The version on the public GitHub website is the most recent stable version that has been well tested.
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