clump group command


clump group s keyword ... <pebble> <range>

Primary keywords:

add    remove    slot

Specify clump or pebble group names. Use of the group logic is described in Groups. By default, s is assigned to the group slot Default. Use the any keyword to assign the group name to the next available slot and the remove keyword to remove s from all slots. The optional pebble keyword can be given before the optional range to specify that the group name will be applied to pebbles. In this case, the range is applied to pebbles and not to clumps.


Assign s to the next available slot.


Remove s from all slots.

slot slot

Set group slot slot to s. By default, slot Default is used.

Usage Examples

Assign the group outer to all clumps in the Default slot.

clump group 'outer'

Assign the group FrontLeft to all clumps in the Default slot. The \(x\)- and \(y\)- components of the clump centroids must fall within the specified ranges for the group to be applied.

clump group 'FrontLeft'  range ...
   position-x [lbx-0.05*dx] 0.0 position-y [lby-0.05*dy] 0.5

Remove the group outer in all slots for all clumps.

clump group remove 'outer'