%ind_cluster%

Cluster computation is invoked by SCAN_ClustersOfConnectivity. It delivers a unique cluster index for each MESHFREE point, also in MPI-mode.
The resulting cluster index is stored in this variable.

Value cluster index	Meaning
-1	point was not considered for clustering (most probably due to being inactive)
0	point was considered for clustering, but the current/local cluster had less points than allowed by the parameter SCAN_ClustersOfConnectivity(1)
>0	regular cluster index. In this case, neighborhood relationship will be adapted to the cluster index, see Version=3+4 (filteringClusterID)