# additive

From ape v5.3
by Emmanuel Paradis

##### Incomplete Distance Matrix Filling

Fills missing entries from incomplete distance matrix using the additive or the ultrametric procedure (see reference for details).

- Keywords
- manip

##### Usage

```
additive(X)
ultrametric(X)
```

##### Arguments

- X
a distance matrix or an object of class

`"dist"`

.

##### Value

a distance matrix.

##### References

Makarenkov, V. and Lapointe, F.-J. (2004) A weighted least-squares
approach for inferring phylogenies from incomplete distance
matrices. *Bioinformatics*, **20**, 2113--2121.

*Documentation reproduced from package ape, version 5.3, License: GPL (>= 2)*

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