CollapseBrances: Filter "small" branches
In Albluca/ElPiGraph.R: Elastic principal graph construction

Filter "small" branches

1 2	CollapseBrances(X, TargetPG, Mode = "PointNumber", ControlPar = 5, TrimmingRadius = Inf, PlotSelected = TRUE)

`X`	numeric matrix, the data matrix
`TargetPG`	list, the ElPiGraph structure to extend
`Mode`	string, the mode used to extend the graph. "PointNumber", "PointNumber_Extrema", "PointNumber_Leaves", "EdgesNumber", and "EdgesLength" are currently implemented
`ControlPar`	positive numeric, the paramter used to control the contribution of the different data points
`TrimmingRadius`	positive numeric, the trimming radius used to control distance
`PlotSelected`	boolean, should a diagnostic plot be visualized (currently not implemented)

a list with 2 values: Nodes (a matrix containing the new nodes positions) and Edges (a matrix describing the new edge structure)

The value of ControlPar has a different interpretation depending on the valus of Mode.

If Mode = "PointNumber", branches with less that ControlPar points projected on the branch (points projected on the extreme points are not considered) are removed

If Mode = "PointNumber_Extrema", branches with less that ControlPar points projected on the branch or the extreme points are removed

If Mode = "PointNumber_Leaves", branches with less that ControlPar points projected on the branch and any leaf points (points projected on non-leaf extreme points are not considered) are removed

If Mode = "EdgesNumber", branches with less that ControlPar edges are removed

If Mode = "EdgesLength", branches with with a length smaller than ControlPar are removed

Albluca/ElPiGraph.R documentation built on May 28, 2019, 11:02 a.m.