Creating a Pie Chart

A Pie chart is a circular diagram divided into segments, each representing a category or subset of data (part of the whole).

The amount for each category is proportional to the area of the sector and the total area of the circle is 100%. The following pie chart shows the force on the equipment, broken down by equipment type, in a conveyor simulation. The chute experiences the greatest force, followed by the feed conveyor.

Selecting Elements

The Select Element section is used to determine the elements in your model to collect data from.

Select the group of elements, and for each element type, you can select either to split the data by type or selection/bin group.

They will form the segments (categories) of the Pie chart.

When Type or Selection Group is selected, the categories within that selection are listed.

For example, if you select Contacts > Type, all specific contacts are the categories listed.

For example, particle x - particle x, particle x - particle y and particle y - particle y.

Similarly if Contacts > Selection groups is selected, all selection and bin groups in your model are the categories listed. All categories within a type or group are included in the chart by default.

Defining Attributes

Click the Select Attribute tab and select the element attribute and component you want to examine using the Pie chart. The attributes available in the list will depend on the elements previously selected. The component type available for most attributes is Total as this is the only type that can be displayed using a Pie chart.

For example, the total mass of particles of Type A compared to particles of Type B. For more information on attributes, see Appendix A: Attribute Definitions. 

The following table shows the attributes and components available for each element.

Element Attribute Components
Contacts Contact vector 1, 2 Magnitude, X, Y, Z
Normal force Magnitude, X, Y, Z
Normal overlap N/A
Number of contacts N/A
Tangential force     Magnitude, X, Y, Z
Tangential overlap N/A
Custom property Depends on number of elements
Collisions Average normal force Magnitude, X, Y, Z
Average tangential force Magnitude, X, Y, Z
Maximum normal force Magnitude, X, Y, Z
Maximum tangential force Magnitude, X, Y, Z
Normal energy loss N/A
Number of collisions N/A
Relative velocity Magnitude, X, Y, Z
Relative velocity normal Magnitude, X, Y, Z
Relative velocity tangential Magnitude, X, Y, Z
Tangential energy loss N/A
Total energy loss N/A
Velocity of element A Magnitude, X, Y, Z
Velocity of element B Magnitude, X, Y, Z
Geometry Compressive force N/A
Distance N/A
Pressure N/A
Total force Magnitude, X, Y, Z
Velocity Magnitude, X, Y, Z
Custom property     Depends on number of elements
Particle Angular velocity Magnitude, X, Y, Z
Compressive force N/A
Diameter N/A
Distance Define reference object*
Kinetic energy N/A
Mass N/A
Number of particles N/A
Potential energy N/A
Rotational kinetic energy N/A
Torque Magnitude, X, Y, Z
Total energy N/A
Total force Magnitude, X, Y, Z
Velocity Magnitude, X, Y, Z
Volume N/A
Custom property Depends on number of elements

 

* If the attribute is set to Distance, you must define a point or plane from which the distance is measured. When distance is selected, the Define Reference Object section of the pane will be activated. Select the point or plane from which the distance should be measured. A point is defined by its xyz position and a plane by its orientation and distance from the origin.

Configuring Graph Settings

You can configure the settings for elements in a particular Time Step or over a range of time steps.

Time Steps

By default, the Current Time step option is selected. You can modify the current Time Step using the Current Time control in the Viewer control pane at the right of the screen.
For example, you could plot the total number of particles in each bin in a bin group at a particular time or the total number that have been in the bins over the course of the entire simulation. Comparing the charts we can see that at t=20s most particles are in bins (2x1x1) and (2x2x1). However, this is not indicative of their location over the course of the whole simulation.

Unselect Current Time Step to set a different start and end time. Grayed-out time steps indicate partial saves and may not contain all the data you want to plot.

Graph Text
Specify the Pie chart title.

Example Pie Chart of Bin Groups

A model contains a bin group that divides the model domain into 10 bins. You may want to show the number of contacts that are occurring in each bin at a given time.

  1. Select the element and then go to Contact > Selection.

  2. Select the attribute Number of Contacts (Total).

  3. In the Settings tab, specify a title for the chart.

  4. In the Viewer Controls pane, select the Time Step at which you want to examine the contacts. Ensure that the Current Time Step option in the Settings tab is selected.
  5. Click Create Graph.
    The Pie chart and the percentage breakdown of the number of contacts occurring in each bin will be displayed in the Viewer. 

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