R: Initialization for incidence matrix

init.incidence.matrix {PhylogeneticEM} | R Documentation

## Initialization for incidence matrix

### Description

`init.incidence.matrix` initialize the matrix updated in `update.incidence.matrix` for the computation of the incidence matrix in `incidence.matrix`.

### Usage

    init.incidence.matrix(phy)

### Arguments

`phy` | Input tree.

### Details

The initialized matrix has ntaxa column and nNodes rows. Each node represent its parental branch. A row corresponding to a tip i is initialized to a vector of zeros, with only entry i equal to one. (Branch ending at tip i is only in the i^th lineage)

### Value

Matrix with nNodes rows and ntaxa column.

[Package PhylogeneticEM version 1.1.0 Index]