eval_data: Evaluate a Data Expression

In KO112/chartjs: R Interface to Chart.js

Description

Evaluate some data expression in the proper context.

Usage

eval_data(data, x)

Arguments

data	The raw data object that x will be evaluated inside of.
x	The data expression to evaluate.

Details

x can be either a:

- Formula: will be evaluated as an expression inside of data. - Function: will be evaluated as-is, so must return the desired object in any context. - Vector: will be used as-is. - Character Scalar: will be used as the name of a column in the data.

Value

A vector.

Examples

print(eval_data(mtcars, ~ mpg))
print(eval_data(x = function() mtcars$mpg))
print(eval_data(mtcars, mtcars$mpg))
print(eval_data(mtcars, "mpg"))

KO112/chartjs documentation built on Aug. 6, 2020, 2:35 p.m.