aqp: transform – R documentation

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Documentation

aqp

transform

Transform a SPC with expressions based on site or horizon level attributes

Description

transform() is a function used for modifying columns in SoilProfileCollections.

It allows the user to specify an arbitrary number of expressions that resolve to the (re-)calculation of one or more site or horizon level attributes. For instance: mutate(spc, thickness = hzdepb - hzdept). The expressions may depend on one another, and are evaluated from left to right.

Usage

## S4 method for signature 'SoilProfileCollection'
transform(`_data`, ...)

Arguments

`_data`	A SoilProfileCollection
`...`	Comma-separated set of R expressions e.g. `thickness = hzdepb - hzdept, hzdepm = hzdept + round(thk / 2)`

Value

A SoilProfileCollection

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