All,

 

I am wondering how one might add a reference line or plane to a cloud or
wireframe plot. I have been unable to figure this out. Let's say I would
like to draw a reference for some value of wt in the example below:

 

cl <- 54.1

age <- 10:80

wt <- 25:160

 

sim <- expand.grid(age = age,wt = wt)

 

sim$cl <- cl*(sim$wt/70)**0.412 * (sim$age/50)**0.152

 

library(lattice)

 

print(cloud(cl~wt*age, data = sim))

 

 

Any thoughts you could provide are greatly appreciated. Thank you!

Steve

 

Steve Riley, PharmD, PhD

Clinical Pharmacology

Specialty Care Medicines Development Group

Pfizer Inc.

445 Eastern Point Rd MS 8260-2513

Groton, CT 06340

 

Email: steve.riley@pfizer.com <mailto:steve.riley@pfizer.com> 

Phone: (860) 441-3435

Fax: (860) 686-5672

 

 


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