path.plot {Synth}R Documentation

Plots Outcome Trajectories for Treated Unit and its Synthetic Control Unit

Description

This function plots the trajectories of the outcome variable for the treated unit and the synthetic control group constructed by synth and dataprep. The user can specifify whether the whole time period or only the pretreatment period should be plotted.

Usage

path.plot(synth.res = NA,dataprep.res = NA,tr.intake = NA,Ylab = c("Y Axis"),Xlab = c("Time"),Ylim = NA,Legend=c("Treated","Synthetic"),Legend.position=c("topright"),Main = NA,Z.plot = FALSE)

Arguments

synth.res Output list created by synth.
dataprep.res Output list created by dataprep.
tr.intake Optional scalar to indicate the time of treatment intake with a vertical line.
Ylab Optional label for Y axis.
Xlab Optional label for X axis.
Ylim Optional Ylim.
Main Optional main title.
Legend Optional legend text (e.g. c("Treated","Synthetic")); see ?legend for details.
Legend.position Optional legend position (e.g. "bottomright"); see ?legend for details.
Z.plot Flag. If true, only pretreatment period is plotted.

Details

The trajectory of the outcome for the synthetic control group is calculated as: dataprep.res$Y0plot%*% synth.res$solution.w. You can use this calculation to construct custom made plots.

Value

The plot of trajectories.

Note

NA

Author(s)

Alexis Diamond adiamond@fas.harvard.edu Jens Hainmueller jhainm@fas.harvard.edu

References

Abadie, A. and Gardeazabal, J. (2003) Economic Costs of Conflict: A Case Study of the Basque Country American Economic Review 93 (1) 113–132 http://ksghome.harvard.edu/~.aabadie.academic.ksg/ecc.pdf

Abadie, A., Diamond, A., Hainmueller, J. (2007) Synthetic Control Methods for Comparative Case Studies: Estimating the Effect of California's Tobacco Control Program NBER Technical Working Paper no 335 http://www.people.fas.harvard.edu/~jhainm/

See Also

gaps.plot,synth.plot,dataprep,synth.tab

Examples

##---- NA ----

[Package Synth version 0.1-6 Index]