smartEDA - Assign unique color to target categories-CodePudding

I was exploring the capabilities of the smartEDA package and stuck with a challenge. The target column "US" has 2 categories - "Yes" and "No". The output (below) shows the same colour for 2 categories compared to having 2 different colours.

For instance, "Yes" - blue / "No" - red

Here's the sample code.

#install.packages("ISLR")
library("ISLR")
#install.packages("SmartEDA")
library("SmartEDA")

plot31 <- ExpNumViz(Carseats,target="US",nlim=4,scatter=TRUE,fname=NULL)
plot31[[1]]

I explored the arguments from the ExpNumViz function by adding the col parameter (documentation: define the fill colour for box plot. Number of color should be equal to number of categories in target variable)

plot31 <- ExpNumViz(col = 2, Carseats,target="US",nlim=4,scatter=TRUE,fname=NULL) #assuming 2 categories

However, I received the following error

Error in `f()`:
! Insufficient values in manual scale. 2 needed but only 1 provided.
Run `rlang::last_error()` to see where the error occurred.

Any workarounds are greatly appreciated.

CodePudding user response：

You should specify the color names in col parameter. The number of color names elements must match the number of categories ploted.

    plot31 <- ExpNumViz(Carseats,
                        target="US",
                        nlim=4,
                        scatter=TRUE,
                        fname=NULL,
                        col = c("Red", "Blue"))

    plot31[[1]]