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author | Johannes Ranke <jranke@uni-bremen.de> | 2020-05-07 08:59:29 +0200 |
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committer | Johannes Ranke <jranke@uni-bremen.de> | 2020-05-07 08:59:29 +0200 |
commit | 8bdb4cd437a9d4663e542f95869e8692aa38dadb (patch) | |
tree | 2844662f8b143547d9abc8f16264407582367ad9 /R/HS.solution.R | |
parent | 1195dfc8bdbf7c131d6c6ec30fedbbe746af1bee (diff) |
Static documentation rebuilt by pkgdown
Diffstat (limited to 'R/HS.solution.R')
-rw-r--r-- | R/HS.solution.R | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/R/HS.solution.R b/R/HS.solution.R deleted file mode 100644 index 890ad8ff..00000000 --- a/R/HS.solution.R +++ /dev/null @@ -1,29 +0,0 @@ -#' Hockey-Stick kinetics -#' -#' Function describing two exponential decline functions with a break point -#' between them. -#' -#' @param t Time. -#' @param parent.0 Starting value for the response variable at time zero. -#' @param k1 First kinetic constant. -#' @param k2 Second kinetic constant. -#' @param tb Break point. Before this time, exponential decline according to -#' \code{k1} is calculated, after this time, exponential decline proceeds -#' according to \code{k2}. -#' @return The value of the response variable at time \code{t}. -#' @references FOCUS (2006) \dQuote{Guidance Document on Estimating Persistence -#' and Degradation Kinetics from Environmental Fate Studies on Pesticides in -#' EU Registration} Report of the FOCUS Work Group on Degradation Kinetics, -#' EC Document Reference Sanco/10058/2005 version 2.0, 434 pp, -#' \url{http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics} -#' @examples -#' -#' plot(function(x) HS.solution(x, 100, 2, 0.3, 0.5), 0, 2, ylim=c(0,100)) -#' -#' @export -HS.solution <- function(t, parent.0, k1, k2, tb) -{ - parent = ifelse(t <= tb, - parent.0 * exp(-k1 * t), - parent.0 * exp(-k1 * tb) * exp(-k2 * (t - tb))) -} |