Learn about using different violation views when adjusting slope constraints and objective weights.
This video demonstrates:
In Grading Optimization, it is important to understand the concept of zones and how they are used to efficiently grade your site.
The Optimisation Options dialog provides global settings for grading. Global Constraints typically correspond to firm project requirements or regulations. Maximum Slope constrains surface triangles to a given slope value. It is important to note here that Minimum Drainage Slope correlates with drain line and low point objects.
Objective Weights are not firm requirement constraints, however. They represent Balancing cut and fill, minimising earthwork and general terrain smoothing.
In Violation View, you can confirm the slope constraints for the zone.
The Convergence Plot is used to see the progression of optimisation. Because full optimisation can take time to process, it is useful to identify issues before optimisation is completed. The Proximity Measure may fluctuate with each iteration, but it should trend downwards as it did early in this optimisation example. Ultimately, it is trying to reach zero. If the Proximity Measure remains at a fixed value, this indicates an issue in which the desired constraints and objectives are not feasible.
Using the Violation View in the Visualisation Toolbar, you can identify problematic surface triangles and see how they are failing to optimise.
In this example, the Maximum Slope Constraint is violated because the triangles are along the surface bordering the zone, which is fixed.
Understanding these features and visualisation techniques will greatly improve your proficiency in Grading Optimization.