|  | 
| void | deleteMissingPointGroups (std::vector< std::string > &groups, const AttributeSet::Descriptor &descriptor) | 
|  | Delete any group that is not present in the Descriptor. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | appendGroup (PointDataTreeT &tree, const Name &group) | 
|  | Appends a new empty group to the VDB tree. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | appendGroups (PointDataTreeT &tree, const std::vector< Name > &groups) | 
|  | Appends new empty groups to the VDB tree. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | dropGroup (PointDataTreeT &tree, const Name &group, const bool compact=true) | 
|  | Drops an existing group from the VDB tree. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | dropGroups (PointDataTreeT &tree, const std::vector< Name > &groups) | 
|  | Drops existing groups from the VDB tree, the tree is compacted after dropping. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | dropGroups (PointDataTreeT &tree) | 
|  | Drops all existing groups from the VDB tree, the tree is compacted after dropping. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | compactGroups (PointDataTreeT &tree) | 
|  | Compacts existing groups of a VDB Tree to use less memory if possible. 
 | 
|  | 
| template<typename PointDataTreeT, typename PointIndexTreeT> | 
| void | setGroup (PointDataTreeT &tree, const PointIndexTreeT &indexTree, const std::vector< short > &membership, const Name &group, const bool remove=false) | 
|  | Sets group membership from a PointIndexTree-ordered vector. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | setGroup (PointDataTreeT &tree, const Name &group, const bool member=true) | 
|  | Sets membership for the specified group for all points (on/off). 
 | 
|  | 
| template<typename PointDataTreeT, typename FilterT> | 
| void | setGroupByFilter (PointDataTreeT &tree, const Name &group, const FilterT &filter) | 
|  | Sets group membership based on a provided filter. 
 | 
|  | 
| template<typename PointDataTreeT> | 
| void | setGroupByRandomTarget (PointDataTreeT &tree, const Name &group, const Index64 targetPoints, const unsigned int seed=0) | 
|  | 
| template<typename PointDataTreeT> | 
| void | setGroupByRandomPercentage (PointDataTreeT &tree, const Name &group, const float percentage=10.0f, const unsigned int seed=0) | 
|  |