Identifies groups with intragroup pairwise distances less than maxDiff
Source:R/grouping-functions.R
groupSimilarityMatrixTree.RdSearches through a complete clustering tree for branches with internal
distances less than maxDiff.
Arguments
- dists
a distance object such as returned by a call to
dist()with the pairwise retention time distances.- maxDiff
numeric(1)with the maximum pairwise distance between members of a group.
Value
integers representing groups of peaks based on retention times.
Should be of the same length as the feature definitions.
Details
The search is performed top-down so that every node is evaluated for qualifying as a group. If the node does not qualify the algorithm iterates to the next node in the tree. If the node qualifies, all members are added as a group to the groups vector and all following child nodes are skipped.
See also
Other grouping operations:
groupClosest(),
groupConsecutive(),
groupSimilarityMatrix()