summarize_se: summarize standard interface.

In WinVector/seplyr: Improved Standard Evaluation Interfaces for Common Data Manipulation Tasks

summarize standard interface.

Description

summarize a data frame by the summarizeTerms. Accepts arbitrary text as summarizeTerms to allow forms such as "mean(Sepal.Length)".

Usage

summarize_se(.data, summarizeTerms, ..., warn = TRUE, env = parent.frame())

summarise_se(.data, summarizeTerms, ..., warn = TRUE, env = parent.frame())

Arguments

.data	data.frame
summarizeTerms	character vector of column expressions to summarize by.
...	force later terms to be bound by name
warn	logical, if TRUE warn about possible name collisions.
env	environment to work in.

Value

.data with summarizeTerms summarization applied.

See Also

summarize, summarize_at, :=

Examples

# good
datasets::iris %.>%
  summarize_se(., qae(Mean_Sepal_Length := mean(Sepal.Length),
                      Max_Sepal_Length := max(Sepal.Length)))

# good
datasets::iris %.>%
  summarize_se(., qae(Sepal.Length := mean(Sepal.Length)))

# intentionally generates a warning
datasets::iris %.>%
  summarize_se(., qae(Sepal.Length := mean(Sepal.Length),
                      Max_Sepal_Length := max(Sepal.Length)))

WinVector/seplyr documentation built on Aug. 26, 2022, 12:01 p.m.