The Diagonalize command requires the selection of at least one structured domain. This command creates a new unstructured domain from the same loop of connectors via the chosen method. The original structured domain is retained.

Select a structured domain or domains, then Create, Diagonalize. A new unstructured domain or domains are generated automatically based on the currently selected method. Change the Diagonalization Method if desired. Click OK to save the new unstructured domain and close the panel. Click Cancel to close the panel without saving the changes.

Use the Diagonalize command to create unstructured domains from existing structured domains.

The Diagonalization Method frame provides different options to choose the method to be used for creating the new unstructured domains. Aligned will split all the existing quadrilaterals in the same direction throughout the domain. Best Fit will split the existing quadrilaterals such that the new triangles have the smallest possible maximum included angle. Keep Quads will keep the current quadrilateral cells and transform the structured domain into an unstructured one. Initialize throws out the existing quadrilaterals and inserts a new triangulated mesh using the same initialization method used on newly created unstructured domains.

The Visibility/Delete Options frame provides controls for how to treat the original structured domains from which the new unstructured domains are created. By default the original structured domains remain and are visible via Show. Select Hide to have the original structured domains automatically be hidden when you click OK to save and close the panel. Otherwise, use Delete to have the original domains deleted when the panel closes.