Heatmap Settings

val df = DataFrame.readCSV( fileOrUrl = "https://raw.githubusercontent.com/Kotlin/dataframe/master/examples/idea-examples/titanic/src/main/resources/titanic.csv", delimiter = ';', parserOptions = ParserOptions(locale = java.util.Locale.FRENCH) ) df.plot { heatmap("embarked", "pclass") { borderLine { width = 0.8 color = Color.BLACK } fillColor(Stat.count) { scale = continuous(Color.WHITE..Color.RED) legend.name = "number of\n passangers" } } y.axis.breaks(df["pclass"].distinct().toList(), format = "d") }