evi.plot {BCEA}  R Documentation 
Plots the Expected Value of Information (EVI) against the willingness to pay
evi.plot(he, graph = c("base", "ggplot2", "plotly"), ...)
he 
A 
graph 
A string used to select the graphical engine to use for
plotting. Should (partial)match the three options 
... 
Additional graphical arguments:

eib 
If 
The function produces a plot of the Expected Value of Information as a function of the discrete grid approximation of the willingness to pay parameter. The break even point(s) (i.e. the point in which the EIB=0, ie when the optimal decision changes from one intervention to another) is(are) also showed.
Gianluca Baio, Andrea Berardi
Baio, G., Dawid, A. P. (2011). Probabilistic Sensitivity Analysis in Health Economics. Statistical Methods in Medical Research doi:10.1177/0962280211419832.
Baio G. (2012). Bayesian Methods in Health Economics. CRC/Chapman Hall, London