Plots distribution and scatterplots for the npde in a
NpdeRes object. Users are advised to use the plot()
function on the NpdeObject object resulting from a call
to npde() or autonpde() instead of trying to plot only
the results element of this object.
Usage
"plot" (x, y, ...)
Arguments
x
a NpdeRes object
Details
Four graphs are produced:
a
quantile-quantile plot
plot of the npde versus the
corresponding quantiles of a normal distribution, with
the line y=x overlayed.
a histogram of the
npde
the shape of the normal distribution is also shown
two scatterplots of the npde
a plot of the npde
versus the independent variable X and a plot of the npde
versus the empirical mean of the predicted distribution;
for these last two graphs, we plot the lines
corresponding to y=0 and to the 5
of the normal distribution delimiting a 90
interval for the npde
References
K. Brendel, E. Comets, C. Laffont, C. Laveille, and
F.Mentre. Metrics for external model evaluation with an
application to the population pharmacokinetics of
gliclazide. Pharmaceutical Research, 23:2036--49,
2006.