This option specifies the parameters for geometrical renumbering. Open the Geometrical Renumbering dialog, by clicking Parameters in the Numbering dialog, after you select the Geometrical numbering option.
To perform geometrical renumbering of nodes or objects in a structure:
Select the nodes or objects, whose numbers you want to change.
In the Geometrical Renumbering dialog:
Selecting the XYZ order, means that the numbering is changed first for the axis of the global coordinate system, and then for axis Y, and finally for axis Z.
For example, the distance between 2 levels is 9m (numbering at the first level starts with 100), and the spacing equals 4m, then, assuming that the numbering step is 100, the numbering at the next level begins at 300 (with the Omit spacings where there are no structure elements cleared).
If the spacing between successive levels or frames is, for instance, 10m, and you define the spacing as 4m, then, with the Omit spacings where there are no structure elements cleared, the successive frames are numbered in the way specified in the node or object numbering step field. If the Omit spacings where there are no structure elements is selected, the numbering increases every 4 meters of the defined spacing.
These examples show how to use the Geometrical renumbering dialog.