From a77a10ea6c607346778ba0700b3b66ac393101a2 Mon Sep 17 00:00:00 2001 From: Johannes Ranke Date: Wed, 27 May 2020 06:06:08 +0200 Subject: Create up to date pkgdown docs in development mode --- docs/dev/reference/max_twa_parent.html | 270 +++++++++++++++++++++++++++++++++ 1 file changed, 270 insertions(+) create mode 100644 docs/dev/reference/max_twa_parent.html (limited to 'docs/dev/reference/max_twa_parent.html') diff --git a/docs/dev/reference/max_twa_parent.html b/docs/dev/reference/max_twa_parent.html new file mode 100644 index 00000000..77166d00 --- /dev/null +++ b/docs/dev/reference/max_twa_parent.html @@ -0,0 +1,270 @@ + + + + + + + + +Function to calculate maximum time weighted average concentrations from +kinetic models fitted with mkinfit — max_twa_parent • mkin + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+

Function to calculate maximum time weighted average concentrations from +kinetic models fitted with mkinfit

+ Source: R/max_twa_parent.R + +
+ +
+

This function calculates maximum moving window time weighted average +concentrations (TWAs) for kinetic models fitted with mkinfit. +Currently, only calculations for the parent are implemented for the SFO, +FOMC, DFOP and HS models, using the analytical formulas given in the PEC +soil section of the FOCUS guidance.

+
+ + 
max_twa_parent(fit, windows)
+
+max_twa_sfo(M0 = 1, k, t)
+
+max_twa_fomc(M0 = 1, alpha, beta, t)
+
+max_twa_dfop(M0 = 1, k1, k2, g, t)
+
+max_twa_hs(M0 = 1, k1, k2, tb, t)
+ +

Arguments

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
fit

An object of class mkinfit.

windows

The width of the time windows for which the TWAs should be +calculated.

M0

The initial concentration for which the maximum time weighted +average over the decline curve should be calculated. The default is to use +a value of 1, which means that a relative maximum time weighted average +factor (f_twa) is calculated.

k

The rate constant in the case of SFO kinetics.

t

The width of the time window.

alpha

Parameter of the FOMC model.

beta

Parameter of the FOMC model.

k1

The first rate constant of the DFOP or the HS kinetics.

k2

The second rate constant of the DFOP or the HS kinetics.

g

Parameter of the DFOP model.

tb

Parameter of the HS model.

+ +

Value

+ +

For max_twa_parent, a numeric vector, named using the +windows argument. For the other functions, a numeric vector of +length one (also known as 'a number').

+

References

+ +

FOCUS (2006) “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, +http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics

+ +

Examples

+ 

+  fit <- mkinfit("FOMC", FOCUS_2006_C, quiet = TRUE)
+  max_twa_parent(fit, c(7, 21))
#>        7       21 
+#> 34.71343 18.22124 

+
+
+ +
+ + + +
+ + + + + + + + -- cgit v1.2.1