R: Plots a densiTree.

densiTree {phangorn} | R Documentation

## Plots a densiTree.

### Description

An R function to plot trees similar to those produced by DensiTree.

### Usage

    densiTree(x, type = "cladogram", alpha = 1/length(x), consensus = NULL,
      direction = "rightwards", optim = FALSE, scaleX = FALSE, col = 1,
      width = 1, lty = 1, cex = 0.8, font = 3, tip.color = 1, adj = 0,
      srt = 0, underscore = FALSE, label.offset = 0, scale.bar = TRUE,
      jitter = list(amount = 0, random = TRUE), ...)

### Arguments

`x` | an object of class `multiPhylo`.
`type` | a character string specifying the type of phylogeny, so far "cladogram" (default) or "phylogram" are supported.
`alpha` | parameter for semi-transparent colors.
`consensus` | A tree or character vector which is used to define the order of the tip labels.
`direction` | a character string specifying the direction of the tree. Four values are possible: "rightwards" (the default), "leftwards", "upwards", and "downwards".
`optim` | not yet used.
`scaleX` | scale trees to have identical heights.
`col` | a skalar or vector giving the colours used to draw the edges for each plotted phylogeny. These are taken to be in the same order than input trees x. If fewer colours are given than the number of trees, then the colours are recycled.
`width` | edge width.
`lty` | line type.
`cex` | a numeric value giving the factor scaling of the tip labels.
`font` | an integer specifying the type of font for the labels: 1 (plain text), 2 (bold), 3 (italic, the default), or 4 (bold italic).
`tip.color` | color of the tip labels.
`adj` | a numeric specifying the justification of the text strings of the labels: 0 (left-justification), 0.5 (centering), or 1 (right-justification).
`srt` | a numeric giving how much the labels are rotated in degrees.
`underscore` | a logical specifying whether the underscores in tip labels should be written as spaces (the default) or left as are (if TRUE).
`label.offset` | a numeric giving the space between the nodes and the tips of the phylogeny and their corresponding labels.
`scale.bar` | a logical specifying whether add scale.bar to the plot.
`jitter` | allows to shift treees. a list with two arguments: the amount of jitter and random or equally spaced (see details below)
`...` | further arguments to be passed to plot.

### Details

If no consensus tree is provided `densiTree` computes a consensus tree, and if the input trees have different labels a mrp.supertree as a backbone. This should avoid too many unnecessary crossings of edges. Trees should be rooted, other wise the output may not be visually pleasing. `jitter` shifts trees a bit so that they are not exactly on top of each other. If `amount == 0`, it is ignored. If `random=TRUE` the result of the perputation is `runif(n, -amount, amount)`, otherwise `seq(-amount, amount, length=n)`, where `n <- length(x)`.

### Author(s)

Klaus Schliep klaus.schliep@gmail.com

### References

densiTree is inspired from the great DensiTree program of Remco Bouckaert.

Remco R. Bouckaert (2010) DensiTree: making sense of sets of phylogenetic trees Bioinformatics, 26 (10), 1372-1373.

### See Also

`plot.phylo`, `plot.networx`, `jitter`

### Examples

    data(Laurasiatherian)
    set.seed(1)
    bs <- bootstrap.phyDat(Laurasiatherian, FUN =
       function(x) upgma(dist.hamming(x)), bs=25)
    # cladogram nice to show topological differences
    densiTree(bs, type="cladogram", col="blue")
    densiTree(bs, type="phylogram", col="green", direction="downwards", width=2)
    # plot five trees slightly shifted, no transparent color
    densiTree(bs[1:5], type="phylogram", col=1:5, width=2, jitter=
        list(amount=.3, random=FALSE), alpha=1)
    ## Not run:
    # phylograms are nice to show different age estimates
    require(PhyloOrchard)
    data(BinindaEmondsEtAl2007)
    BinindaEmondsEtAl2007 <- .compressTipLabel(BinindaEmondsEtAl2007)
    densiTree(BinindaEmondsEtAl2007, type="phylogram", col="red")

    ## End(Not run)

[Package phangorn version 2.3.1 Index]