ggtrendline

Add trendline and confidence interval of linear or nonlinear regression model and show equation to 'ggplot' as simple as possible. For a general overview of the methods used in this package, see Ritz and Streibig (2008) doi:10.1007/978-0-387-09616-2 and Greenwell and Schubert Kabban (2014) doi:10.32614/RJ-2014-009.

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