Add graphical EDA elements to existing plot

eda_add adds graphical EDA elements to a scatter plot. Currently only adds eda_rline fit and points.

Usage

eda_add(
  x,
  pch = 24,
  p.col = "darkred",
  p.fill = "yellow",
  lty = 1,
  l.col = "darkred"
)

Arguments

x

Object of class eda_rline.

pch

Point symbol type.

p.col

Point color passed to col.

p.fill

Point fill color passed to bg (Only used for pch ranging from 21-25).

lty

Line type.

l.col

Line color.

Value

Returns the eda_rline intercept and slope.

• a: Intercept

• b: Slope

Details

This function adds an eda_rline slope and 3-pt summary points to an existing scatter plot.

See the Resistant Line article for a detailed breakdown of the resistant line technique.

Examples

eda_lm(mtcars, x = wt, y = mpg)
#>       int      wt^1 
#> 37.285126 -5.344472 
Mr <- eda_rline(mtcars, x=wt, y=mpg)
eda_add(Mr, l.col = "blue")
#> $a
#> [1] 37.61522
#> 
#> $b
#> [1] -5.504814
#>