aqp: summarizeSPC – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

summarizeSPC

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

aqp

Algorithms for Quantitative Pedology

v1.29

GPL (>= 3)

Authors

Dylan Beaudette [aut, cre], Pierre Roudier [aut, ctb], Andrew Brown [aut, ctb]

Initial release

2021-04-05