R: Add node matrix to a tree

addNdmtrx {treeman} | R Documentation

## Add node matrix to a tree

### Description

Return tree with node matrix added.

### Usage

    addNdmtrx(tree, shared = FALSE, ...)

### Arguments

`tree` | `TreeMan` object
`shared` | T/F, should the bigmatrix be shared? See bigmemory documentation.
`...` | `as.big.matrix()` additional arguments

### Details

The node matrix makes 'enquiry'-type computations faster: determining node ages, number of descendants etc. But it takes up large amounts of memory and has no impact on adding or removing tips. Note, trees with the node matrix can not be written to disk using the 'serialization format' i.e. with `save` or `saveRDS`. The matrix is generated with bigmemory's 'as.big.matrix()'.

### See Also

`updateSlts`, `rmNdmtrx`, https://cran.r-project.org/package=bigmemory

### Examples

    # library(treeman)
    tree <- randTree(10, wndmtrx=FALSE)
    summary(tree)
    tree <- addNdmtrx(tree)
    summary(tree)

[Package treeman version 1.1.4 Index]