Subset a visreg object — subset.visreg • visreg

Subset a visreg object so that only a portion of the full model is plotted.

Usage

# S3 method for class 'visreg'
subset(x, sub, ...)

Arguments

x: A visreg object.
sub: Logical expression indicating elements to keep, as in subset()
...: Not used.

Value

A visreg() object.

Examples

# Fit a model and construct a visreg object
airquality$Heat <- cut(airquality$Temp, 3, labels = c("Cool", "Mild", "Hot"))
fit <- lm(Ozone ~ Solar.R + Wind * Heat, data = airquality)
v <- visreg(fit, "Wind", by = "Heat", plot = FALSE)

# Plot only certain levels
vv <- subset(v, Heat %in% c("Cool", "Hot"))
plot(vv)


# Plot only up to wind 15 mph
vv <- subset(v, Wind < 15)
plot(vv)