Last data update: 2014.03.03

R: Display Indifference Curves on a standardized ICE Economic...
plot.ICEepmapR Documentation

Display Indifference Curves on a standardized ICE Economic Preference Map


Display plots of the Indifference Curves of an ICE Economic Preference Map using the contourplot() and expand.grid() functions from the lattice R-package.


 ## S3 method for class 'ICEepmap'
plot(x, xygrid = FALSE, ...)



Output list object from either ICEepmap or ICEomega.


Either FALSE or a grid object for a lattice of (x, y) plotting positions.


Optional argument(s) passed on to contourplot().


If xygrid == FALSE, the default xygrid wiil be a 201 x 201 lattice of equally spaced plotting positions covering the x=DeltaEffe and y=DeltaCost ranges [-10,+10]. This default is: x <- seq(-10, +10, length = 201); y <- x; xygrid <- expand.grid(x = x, y = y)




Bob Obenchain <>


Cook JR, Heyse JF. Use of an angular transformation for ratio estimation in cost-effectiveness analysis. Statistics in Medicine 2000; 19: 2989-3003.

Obenchain RL. Incremental Cost-Effectiveness (ICE) Preference Maps. 2001 JSM Proceedings (Biopharmaceutical Section) on CD-ROM. (10 pages.) Alexandria, VA: American Statistical Association. 2002.

Obenchain RL. ICE Preference Maps: Nonlinear Generalizations of Net Benefit and Acceptability. Health Serv Outcomes Res Method 2008; 8: 31-56. DOI 10.1007/s10742-007-0027-2. Open Access.

See Also

ICEepmap and ICEomega


 epm <- ICEomega(beta=0.8)


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> library(ICEinfer)
Loading required package: lattice
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/ICEinfer/plot.ICEepmap.Rd_%03d_medium.png", width=480, height=480)
> ### Name: plot.ICEepmap
> ### Title: Display Indifference Curves on a standardized ICE Economic
> ###   Preference Map
> ### Aliases: plot.ICEepmap
> ### Keywords: methods hplot
> ### ** Examples
>  epm <- ICEomega(beta=0.8)
>  require(lattice)
>  plot(epm)
null device