The graphical output depends on the target function at hand.
- For 1D numeric functions the upper plot shows the true function (if known),
the model and the (infill) points. The lower plot shows the infill criterion.
- For 2D mixed target functions only one plot is displayed.
- For 2D numeric only target functions up to four plots are presented to the
viewer:
- levelplot of the true function landscape (with [infill] points),
- levelplot of the model landscape (with [infill] points),
- levelplot of the infill criterion
- levelplot of the standard error (only if learner supports standard error estimation).
- For bi-criteria target functions the upper plot shows the target space and the lower
plot displays the x-space.
renderExampleRunPlot(
object,
iter,
densregion = TRUE,
se.factor = 1,
single.prop.point.plots = FALSE,
xlim = NULL,
ylim = NULL,
point.size = 3,
line.size = 1,
trafo = NULL,
colors = c("red", "blue", "green"),
...
)
Arguments
object |
[function ]
MBOExampleRun or MBOExampleRunMultiObj object. |
iter |
[integer ]
Selected iteration of object to render plots for. |
densregion |
[logical(1) ]
Should the background be shaded? Default is TRUE .
Only used if learner supports computation of standard error. |
se.factor |
[numeric(1) ]
If the model provides local standard error estimation,
in addition to the mean response yhat(x) +- se.factor * se(x)
is plotted above and below.
Default is 1. |
single.prop.point.plots |
[logical(1) ]
Parameter for MOI-MBO Multi-point proposal: Should every proposed point
be displayed in a single plot - or one plot per Iteration? Default is FALSE
indicating single plots per proposed points. |
xlim |
[numeric(2) ]
For 1D: xlim parameter for first and second plot.
Default is range of x-values evaluated in run object object . |
ylim |
[numeric(2) ]
For 1D: ylim parameter for first plot, for the second plot ylim is always set
automatically, depending on the range of the evaluated infill criterion.
Default for the first plot is a heuristic to have the true function
and yhat(x) +- se.factor2 * se(x) both in the plot. Note that this heuristic might
change the ylim setting between plot iterations. |
point.size |
[numeric(1) ]
Point size for plotted points. Default is 3. |
line.size |
[numeric(1) ]
Line width of the graphs of plotted functions. |
trafo |
[list ]
List of transformation functions of type MBOTrafoFunction for
the different plots.
For 1D: The list elements should be named with “y” (applied to objective function and model)
or “crit” (applied to the criterion). Only applied to plots with numeric parameters.
For 2D: The list should contain at least one element “y”, “yhat”, “crit”
or “se”.
This way one can specify different transformations for different plots.
If a single function is provided, this function is used for all plots. |
colors |
[character(3) ]
Specify colors for point in the plots. Must be a vector of length 3,
each element a color for the type design, prop and seq respectively.
Default is red for the initial design, blue for already proposed points
and green for the actual iteration. |
... |
[any]
Currently not used. |
Value
[list
]. List containing separate ggplot object. The number of plots depends on
the type of MBO problem. See the description for details.