Curvature diagram - TNC3

15.4 Curvature Diagram

When an axis file (.eje) is loaded in the application, a floating curvature diagram window is displayed alongside the superelevation editor. This diagram shows the curvature of the axis along the station range, providing a reference for defining the superelevation values.

The curvature diagram has its own toolbar with the following controls:

Curvature factor: Sets the vertical scaling factor for the curvature diagram, allowing adjustment of the visual amplitude of the curvature representation.

Text height: Sets the size of the annotation text in the curvature diagram.

The curvature diagram uses the following color scheme:

• Green: Straight segments (zero curvature).
• Red: Clothoid segments (transition curves).
• Yellow: Circular curve segments.

The status bar of the curvature diagram shows the current station and curvature values corresponding to the position of the cursor within the diagram.