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

summarize() is a function used for summarizing a SoilProfileCollection object. 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.

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

Andrew G. Brown