plotBarrierTree3D: Plot Barrier Tree in 3D

In flacco: Feature-Based Landscape Analysis of Continuous and Constrained Optimization Problems

Description

Creates a 3D surface plot containing the barrier tree of this cell mapping.

Usage

plotBarrierTree3D(feat.object, control)

Arguments

feat.object	[FeatureObject] A feature object as created by createFeatureObject.
control	[list] A list, which stores additional control arguments. For further information, see details.

Details

Possible control arguments are:

• Computation of Cell Mapping:

  • gcm.approach: Which approach should be used when computing the representatives of a cell. The default is "min", i.e. the observation with the best (minimum) value within per cell.

  • gcm.cf_power: Theoretically, we need to compute the canonical form to the power of infinity. However, we use this value as approximation of infinity. The default is 256.

• Plot Control:

  • bt.margin: Margins of the plot as used by par("mar"). The default is c(0.5, 1, 0, 0).

  • bt.color_surface: Color of the surface of the perspective plot. The default is "lightgrey".

  • bt.color_branches: Color used for the branches of the barrier tree. Per default there will be one color per level.

  • bt.persp_border: Color of the lines / borders around each facet of the perspective plot. The default is "grey".

  • bt.persp_shade: A ratio defining the shade of the surface. The default is 0.35.

  • bt.persp_{theta, phi}: Angles (in degree) defining the viewing direction of the perspective plot. theta corresponds to the azimuthal direction (default: 330) and phi to the colatitude (default: 15).

  • bt.persp_{xlab, ylab, zlab}: Labels of the x-, y- and z- axis. The defaults are expression(x[1]), expression(x[2]) and expression(f(x[1], x[2]))

  • bt.persp_ticktype: Should the values of each dimension be shown in detail ("detailed") or just via "simple" arrows in direction of increasement along the axes? The default is "detailed".

  • bt.col_root: Color of the root symbol. The default is "red".

  • bt.pch_root: Symbol used for plotting the root. The default is 17 (filled triangle).

  • bt.pch_breakpoint: Symbol used for plotting a breakpoint. The default is 5 (non-filled diamond).

  • bt.pch_basin: Symbol used for plotting the leaf (i.e. a basin) of the barrier tree. The default is 19 (filled circle).

  • bt.lwd: Width of the lines used for plotting the branches of a barrier tree. The default is 2.

Value

[plot].
A 3D-surface plot, visualizing the barrier tree of this cell mapping.

Examples

# create a feature object
X = createInitialSample(n.obs = 900, dim = 2)
f = smoof::makeAckleyFunction(dimensions = 2)
y = apply(X, 1, f)
feat.object = createFeatureObject(X = X, y = y, fun = f, blocks = c(4, 6))

# plot the corresponing barrier tree
plotBarrierTree3D(feat.object)

flacco documentation built on April 1, 2020, 1:06 a.m.