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.

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



A SoilProfileCollection


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


A SoilProfileCollection


Andrew G. Brown.