How to remove whiskers in a boxplot with the R Base Package

Problem

We want to remove whiskers in a boxplot created with the R base package.

boxplot(mpg ~ cyl, data = mtcars)

Solution

We pass the arguments: whisklty = 0, staplelty = 0.

whisklty - to control the whisker line type (default: "dashed").
staplelty - to control the staple (= end of whisker) line type.

boxplot(mpg ~ cyl, data = mtcars, whisklty = 0, staplelty = 0)

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