outlier Convex polygon 1 Dual response surface 1 Ecology 1 Engineering research 1 Environmental variables 1 Error detection 1 Geometry 1 ITS applications 1 Indicator indicator 1 Isotopes 1 Logistic regressions 1 Logistics 1 M-estimator 1 MM-location and MM-scale 1 Medical data analysis 1 Medical research 1 Minimum convex polygon 1 Monte Carlo analysis 1 Niche overlap 1 Non-parametric statistics 1 Numerical example 1 Outlier Detection 1 Outliers 1 Penalty function optimization 1 Regression analysis 1 Stable isotope analysis 1 Stable-isotope analysis 1 Statistics 1 Trophic niche 1