vl_calculate — vl_calculate • vegabrite

Add CalculateTransform to a vega-lite spec.

Usage

vl_calculate(spec, calculate = NULL, as = NULL, .object = NULL)

Arguments

spec: An input vega-lite spec
calculate: A expression string. Use the variable datum to refer to the current data object.
as: The field for storing the computed formula value.
.object: Directly input an object, rather than creating one via the other arguments. Should not be used in conjunction with the other arguments other than spec. Objects can be of type: CalculateTransform

Value

A modified Vega-Lite Spec