groupwiseSum: Groupwise sums

Description

Calculates sums for groups.

Usage

groupwiseSum(
  formula = NULL,
  data = NULL,
  var = NULL,
  group = NULL,
  digits = NULL,
  ...
)

Value

A data frame of statistics by group.

Arguments

formula: A formula indicating the measurement variable and the grouping variables. e.g. y ~ x1 + x2.
data: The data frame to use.
var: The measurement variable to use. The name is in double quotes.
group: The grouping variable to use. The name is in double quotes. Multiple names are listed as a vector. (See example.)
digits: The number of significant figures to use in output. The default is NULL, which results in no rounding of values.
...: Other arguments passed to the sum function

Author

Salvatore Mangiafico, mangiafico@njaes.rutgers.edu

Details

The input should include either formula and data; or data, var, and group. (See examples).

Examples

Run this code

### Example with formula notation
data(AndersonBias)
groupwiseSum(Count ~ Result + Gender,
             data        = AndersonBias)
                
### Example with variable notation
data(AndersonBias)
groupwiseSum(data        = AndersonBias,
             var         = "Count",
             group       = c("Result", "Gender"))

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