CollocInferPlots: Diagnostic PLots for CollocInfer

In CollocInfer: Collocation Inference for Dynamic Systems

Diagnostic PLots for CollocInfer

Description

Diagnostic Plots on the Results of CollocInfer

Usage

CollocInferPlots(coefs,pars,lik,proc,times=NULL,data=NULL,
      cols=NULL,datacols=NULL,datanames=NULL,ObsPlot=TRUE,DerivPlot=TRUE,
      cex.axis=1.5,cex.lab=1.5,cex=1.5,lwd=2)

Arguments

coefs	Vector giving the current estimate of the coefficients.
pars	Vector of estimated parameters.
lik	lik object defining the observation process.
proc	proc object defining the state process.
times	Vector observation times for the data.
data	Matrix of observed data values.
cols	Optional vector specifying a color for each state variable.
datacols	Optional vector specifying a color for each observation dimension.
datanames	Optional character vector specifying a glyph to plot the data. Taken from the column-names of data if not given.
ObsPlot	Should a plot of predictions and observations be given?
DerivPlot	Should derivative diagnostics be produced?
cex.axis	Axis font size.
cex.lab	Label font size.
cex	Plotting point font size
lwd	Plotting line width

Details

Timevec is taken to be the quadrature values. Three plots can be produced:

If ObsPlot=TRUE a plot is given of the predicted values of the observations along with the observations themselves (if given).

If DerivPlot=TRUE two plots are produced. The first gives the value of the derivative of the estimated trajectory (dashed) and the value of the right-hand-side of the ordinary differential equation in proc (hence the predicted derivative) (solid). The second plot gives their difference in the first panel as well as the estimated trajectory in the second panel.

Value

A list containing elements used in plotting:

timevec	Times at which the trajectories etc were evaluated.
traj	Estimated value of the trajectory.
dtraj	Derivative of the estimated trajectory.
ftraj	Value of the derivative of the trajectory predicted by proc
otraj	Predicted values of the observations from lik.

CollocInfer documentation built on April 4, 2025, 2:21 a.m.