group_by.treedata: Function for grouping an object of class 'treedata'
In treeplyr: 'dplyr' Functionality for Matched Tree and Data Objects

Description Usage Arguments Details Value See Also Examples

This function can be used to group a treedata object by some factor.

## S3 method for class 'treedata'
group_by(.data, ..., .add = FALSE)

## S3 method for class 'grouped_treedata'
ungroup(x, ...)

`.data`	An object of class `treedata`
`...`	The name of the grouping factor.
`.add`	By default, when .add = FALSE, group_by will override existing groups. To instead add to the existing groups, use .add = TRUE
`x`	An object of class `treedata`

Groups the data frame and phylogeny by one of the factors in the data table.

An object of class grouped_treedata.

summarize

data(anolis)
td <- make.treedata(anolis$phy, anolis$dat)
tdGrouped <- group_by(td, ecomorph)
summarize(tdGrouped, ntips = length(phy$tip.label),
   totalBL = sum(phy$edge.length), meanSVL = mean(SVL), sdSVL = sd(SVL))