Trend Classification Algorithm R package PolyTrend version 1.3 Classifies trends as linear, quadratic, cubic, concealed, or no-trend. Concealed trends have a quadratic or cubic form, but their net change between the beginning and end of the time period is not statistically significant. The no-trend category includes linear trends with a statistically insignificant slope. The method is described in Jamali et al. (2014) <doi:10.1016/j.rse.2013.10.019>. Software Sadegh Jamali <sadegh.jamali@tft.lth.se> Comprehensive R Archive Network (CRAN) Sadegh Jamali [aut, cre], Hristo Tomov [aut] GPL-2 2026-11-04 application/tgz https://CRAN.R-project.org/package=PolyTrend doi:10.32614/CRAN.package.PolyTrend