Delete "Shape" (object) with CGA

[PeterVieira]

Hello,

is there no way to delete an imported "shape" with CGA? Within the scene it's extremely simple to single click on a building footprint (object within a shape file imported into the scene) so it's selected and hit the [delete] key on my keyboard. City Engine Help says: "The NIL operation deletes the current shape from the shape tree." But how can I actually use it in a cga file to delete a shape that the rule file is applied to?

[CherylLau]

Sorry, there's no way to delete an imported shape (object) with cga.   In addition to being able to delete them manually (as you point out), you can also delete them in a python script with ce.delete().

The keyword NIL in cga is applied to a shape in the derivation shape tree, which is created when cga code is run.  This is a different meaning of "shape" than what you describe above.  The keyword NIL will delete the geometry of a shape in the derivation shape tree.