10.1371/journal.pone.0127592.g003 Mengjun Kang Mengjun Kang Mingjun Wang Mingjun Wang Qingyun Du Qingyun Du Peaks surface is function of three variables, obtained by translating and scaling Gaussian distributions, which is useful for DEM test. Public Library of Science 2015 kriging DTM representation methods Quadrangular Irregular Networks spline DTM construction data points interpolation methods Related Error Analysis QIN method 2015-05-21 03:18:17 Figure https://plos.figshare.com/articles/figure/_Peaks_surface_is_function_of_three_variables_obtained_by_translating_and_scaling_Gaussian_distributions_which_is_useful_for_DEM_test_/1422590 <p>(a) 3D display (b) 2D display.</p>