Draw a single observation out of an object matching some criteria
Draw is used to select a single observation out of an R object. Additional parameters allow the user to control how that observation is chosen in order to manipulate that observation later. This is a generic function with methods for a number of objects.
draw(object, type = c("random", "average"), varList = NULL, seed = NULL, ...)
## S3 method for class 'merMod'
draw(object, type = c("random", "average"), varList = NULL, seed = NULL, ...)object |
the object to draw from |
type |
what kind of draw to make. Options include random or average |
varList |
a list specifying filters to subset the data by when making the draw |
seed |
numeric, optional argument to set seed for simulations, ignored if type="average" |
... |
additional arguments required by certain methods |
In cases of tie, ".", may be substituted for factors.
a data.frame with a single row representing the desired observation
fm1 <- lmer(Reaction ~ Days + (Days | Subject), sleepstudy)
# Random case
draw(fm1, type = "random")
# Average
draw(fm1, type = "average")
# Subset
draw(fm1, type = "average", varList = list("Subject" = "308"))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.