parallelPlot: Create a parallel plot for a specified point on the frontier.

In MatchingFrontier: Computation of the Balance - Sample Size Frontier in Matching Methods for Causal Inference

Description

parallelPlot() creates a parallel plot for a specified point on the frontier. Wraps parcoord() from MASS.

Usage

parallelPlot(frontier.object, N, variables, treated.col = 'grey', control.col = 'black')

Arguments

frontier.object	An object generated by makeFrontier().
N	The number of observations left in the exported data set. If the user selects an undefined point, generateDataset returns a dataset from the nearest defined point on the frontier.
variables	The variables to be included in the parallel plot.
treated.col	The color of the lines corresponding to observations assigned to the treatment. Grey by default.
control.col	The color of the lines corresponding to observations assigned to the control. Black by default.

References

Venables, William N., and Brian D. Ripley. Modern applied statistics with S. Springer, 2002.

Examples

data(lalonde)

match.on <- colnames(lalonde)[!(colnames(lalonde) %in% c('re78', 'treat'))]
mahal.frontier <- makeFrontier(dataset = lalonde,
                            treatment = 'treat',
                            outcome = 're78',
                            match.on = match.on)
parallelPlot(mahal.frontier,
             N = 300,
             variables = c('age',
             're74',
             're75',
             'black'),
             treated.col = 'grey',
             control.col = 'blue'
             )

Example output

Loading MatchingFrontier Version 1.0.0

## Citation ##
King, Gary, Christopher Lucas, and Richard Nielsen. "MatchingFrontier:
Automated Matching for Causal Inference." R package version 1.0.0.

## BibTeX ##
@manual{MatchingFrontier,
	title={MatchingFrontier: Automated Matching for Causal Inference},
	author={King, Gary and Lucas, Christopher and Nielsen, Richard},
	year={2014},
	note={R package version 1.0.0}
}

Calculating Mahalanobis distances...
Calculating theoretical frontier...
Calculating information for plotting the frontier...

MatchingFrontier documentation built on May 2, 2019, 4:16 a.m.