Multiple side-by-side conditional boxplots of one numeric target

You have many categorical variables and one continuous target. And you are interested in finding out any relationship between each categorical variable with the target using conditional boxplots. Boxplot of target will be conditioned by each one of the categorical variable in turn and drawn in side-by-side panels. If input dataset is large, you can take a subset of it for plotting.
Uses R packages ggplot2, grid and gridExtra

Input ports

1. Type: Table
   Port 1
   Knime Dataframe of dataset

Output ports

1. Type: Image
   boxplots
   Images of boxplots