'Hydropeaking Events Detection Algorithm' R package HEDA version 0.1.5 This tool identifies hydropeaking events from raw time-series flow record, a rapid flow variation induced by the hourly-adjusted electricity market. The novelty of 'HEDA' is to use vector angle instead of the first-order derivative to detect change points which not only largely improves the computing efficiency but also accounts for the rate of change of the flow variation. More details <doi:10.1016/j.jhydrol.2021.126392>. Software Depends: R (>= 4.0), dplyr (>= 1.0.2), ggplot2 (>= 3.1.0), zoo (>= 1.8.7), lubridate (>= 1.7.4), rlang (>= 0.4.11) Tingyu Li <styli@ucdavis.edu> Comprehensive R Archive Network (CRAN) Tingyu Li [aut, cre], Xiaotian Zou [aut], Gregory Pasternack [aut] MIT + file LICENSE (https://CRAN.R-project.org/package=HEDA/LICENSE) 2021-07-20 application/tgz https://CRAN.R-project.org/package=HEDA doi:10.32614/CRAN.package.HEDA