R: Perform summaries on groups (from 'group

summarizeSPC {aqp}

R Documentation

Perform summaries on groups (from `group_by`) and create new site or horizon level attributes

Description

summarize() is a function used for summarizing SoilProfileCollections. Specify the groups using the group_by verb, and then (named) expressions to evaluate on each group. The result is a data.frame with one row per categorical level in the grouping variable and one column for each summary variable.

Usage

summarizeSPC(object, ...)

Arguments

`object`	A SoilProfileCollection
`...`	A set of (named) comma-delimited R expressions that resolve to a summary value. e.g `groupmean = mean(clay, na.rm = TRUE)`

Value

A data.frame with one row per level in the grouping variable, and one column for each summary

Author(s)

Andrew G. Brown