XYZ point cloud plots


XYZ plots provide a way to visualise data points in three dimensions. It is also possible to create convex hulls around the datapoints (which can be useful for visualising pareto surfaces or for distinguishing between the extent of data points created through different simulations)

As shown in the plot below, an XYZ plot consists of four segments. Three of the plots show the projection of the data points onto the plane defined by each pairing of axes. The third quadrant shows the points plotted in a 3D space. It is possible to rotate the 3D space by grabbing with the mouse, and dragging up/down or left/right. It is possible to move the boundaries joining the quadrants by grabbing and dragging them with the mouse (this causes the different quadrants to be resized accordingly)

To create an XYZ plot

Click the new chart button in the datasets and charting pane, on the lower left of the screen after running a simulation. In the dialog which appears, select the chart type 'XYZ plot'. When the empty chart window appears, use the chart options pane to create and configure the layer(s) you wish to plot.

Chart options

Commonly-used options, including axis range-setting, are available in the chart options pane. Additional options are accessible by clicking the 'Properties' button just under the 'Chart options' pane label (to the right of the 'View' label, in the screenshot below). These include:

  • Edit axis labels
  • Edit fonts of axis labels and numbers
  • Draw convex hull in the 3D space, around a set of points
  • Plot 'shadows' of the points, projected onto the planes bounding the 3D space.
Layer-specific options - such as the shape and color of datapoints - can be accessed on the corresponding layer pane which is visdible towards the bottom of the Chart options panel. More layer-specific options are accessible by clicking the layer properties button, at the top of the panel defining each layer.