summary.mkinfit. mkin 0.9.44.9000

Usage

"summary"(object, data = TRUE, distimes = TRUE, alpha = 0.05, ...)
-"print"(x, digits = max(3, getOption("digits") - 3), ...)

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Arguments

object: - an object of class mkinfit. -
x: - an object of class summary.mkinfit. -
data: - logical, indicating whether the data should be included in the summary. -
distimes: - logical, indicating whether DT50 and DT90 values should be included. -
alpha: - error level for confidence interval estimation from t distribution -
digits: - Number of digits to use for printing -
...: - optional arguments passed to methods like print. -

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Description

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Lists model equations, the summary as returned by summary.modFit, - the chi2 error levels calculated according to FOCUS guidance (2006) as far - as defined therein, and optionally the data, consisting of observed, predicted - and residual values.

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Value

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version, Rversion: The mkin and R versions used
date.fit, date.summary: The dates where the fit and the summary were produced
use_of_ff: Was maximum or minimum use made of formation fractions
residuals, residualVariance, sigma, modVariance, df: As in summary.modFit
cov.unscaled, cov.scaled, info, niter, stopmess, par: As in summary.modFit
bpar: Optimised and backtransformed parameters
diffs: The differential equations used in the model
data: The data (see Description above).
start: The starting values and bounds, if applicable, for optimised parameters.
fixed: The values of fixed parameters.
errmin: The chi2 error levels for each observed variable.
bparms.ode: All backtransformed ODE parameters, for use as starting parameters for - related models.
ff: The estimated formation fractions derived from the fitted model.
distimes: The DT50 and DT90 values for each observed variable.
SFORB: If applicable, eigenvalues of SFORB components of the model.

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References

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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://focus.jrc.ec.europa.eu/dk

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Examples

  summary(mkinfit(mkinmod(parent = list(type = "SFO")), FOCUS_2006_A, quiet = TRUE))
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-mkin version:    0.9.44.9000 
-R version:       3.3.1 
-Date of fit:     Sat Sep 10 05:19:45 2016 
-Date of summary: Sat Sep 10 05:19:45 2016 
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-Equations:
-d_parent = - k_parent_sink * parent
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-Model predictions using solution type analytical 
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-Fitted with method Port using 35 model solutions performed in 0.078 s
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-Weighting: none
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-Starting values for parameters to be optimised:
-               value   type
-parent_0      101.24  state
-k_parent_sink   0.10 deparm
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-Starting values for the transformed parameters actually optimised:
-                       value lower upper
-parent_0          101.240000  -Inf   Inf
-log_k_parent_sink  -2.302585  -Inf   Inf
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-Fixed parameter values:
-None
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-Optimised, transformed parameters with symmetric confidence intervals:
-                  Estimate Std. Error  Lower   Upper
-parent_0           109.200     4.3910 98.410 119.900
-log_k_parent_sink   -3.291     0.1152 -3.573  -3.009
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-Parameter correlation:
-                  parent_0 log_k_parent_sink
-parent_0             1.000             0.575
-log_k_parent_sink    0.575             1.000
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-Residual standard error: 6.08 on 6 degrees of freedom
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-Backtransformed parameters:
-Confidence intervals for internally transformed parameters are asymmetric.
-t-test (unrealistically) based on the assumption of normal distribution
-for estimators of untransformed parameters.
-               Estimate t value    Pr(>t)    Lower     Upper
-parent_0      109.20000  24.860 1.394e-07 98.41000 119.90000
-k_parent_sink   0.03722   8.679 6.457e-05  0.02807   0.04934
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-Chi2 error levels in percent:
-         err.min n.optim df
-All data   8.385       2  6
-parent     8.385       2  6
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-Resulting formation fractions:
-            ff
-parent_sink  1
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-Estimated disappearance times:
-        DT50  DT90
-parent 18.62 61.87
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-Data:
- time variable observed predicted residual
-    0   parent   101.24   109.153  -7.9132
-    3   parent    99.27    97.622   1.6484
-    7   parent    90.11    84.119   5.9913
-   14   parent    72.19    64.826   7.3641
-   30   parent    29.71    35.738  -6.0283
-   62   parent     5.98    10.862  -4.8818
-   90   parent     1.54     3.831  -2.2911
-  118   parent     0.39     1.351  -0.9613
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Author

- - Johannes Ranke - - -