Computing Measurements for Graphs

You can compute measurements and add other scalar data to graphs in the Compute Measurements dialog.

Right-click the graph to which you want to add scalar values and then choose Compute Measurements in the pop-up menu to open the Compute Measurements dialog, shown below.

Compute Measurements dialog

The following categories and items are available for graphs.

Measurements and other values for graphs

Item	Description
Constant Edge	Adds a constant edge value. You can enter a title for the measurement and choose the constant value.
Constant Vertex	Adds a constant vertex value. You can enter a title for the measurement and choose the constant value.
Distance from Points	Adds distance measurements computed from the mean position of a series of points. Note You must first create a points set with the Points tool to enable this option (see Using the Points Tool).
Distance from Center of Mass	Adds distance measurements computed from the graph's center of mass.
Edge Length	Computes the Euclidean length of the line connecting two branches or a branch and an end node.
Mapping from	Lets you map the scalar values from another object, such as an image, multi-ROI, or scalar mesh (see Mapping Vertex Scalar Values to Graphs).
Subgraph edge connected indices	Creates a sub-graph in which connected edges are grouped together.
Subgraph vertex connected indices	Creates a sub-graph in which connected vertices are grouped together.

1. Right-click the graph to which you want to add scalar values and then choose Compute Measurements in the pop-up menu.

   The Compute Measurements dialog appears.

2. Select the measurements and other values that you want to add to the selected graph, as well as any other requirement(s).
3. Click Compute.

   The computed measurements and other values are selectable in the Scalar information box (see Graph Settings).