In [1]:

%useLatestDescriptors
%use lets-plot
//%use krangl

In [2]:

LetsPlot.getInfo()  // Work around Krangl loading old Lets-Plot classes.

Out[2]:

Lets-Plot Kotlin API v.4.1.1. Frontend: Notebook with dynamically loaded JS. Lets-Plot JS v.2.5.1.

In [3]:

%use krangl

In [4]:

val df = DataFrame.readCSV("https://raw.githubusercontent.com/JetBrains/lets-plot-kotlin/master/docs/examples/data/mpg.csv")
df.head(3)

Out[4]:

	manufacturer	model	displ	year	cyl	trans	drv	cty	hwy	fl	class
1	audi	a4	1.8	1999	4	auto(l5)	f	18	29	p	compact
2	audi	a4	1.8	1999	4	manual(m5)	f	21	29	p	compact
3	audi	a4	2.0	2008	4	manual(m6)	f	20	31	p	compact

Shape: 3 x 12.

In [5]:

val p = letsPlot(df.toMap()) { x = "cty"; y = "hwy"; color = "drv" } +
        geomPoint(tooltips = layerTooltips()
                                .title("@manufacturer @model")             
                                .line("@|@class")
                                .line("@|@year")) +
        labs(
            title = "The plot title",
            subtitle = "The plot subtitle",
            caption = "The plot caption",
            color = "Drive type"
        )       
p

Out[5]:

In [6]:

// Font size and face.
val p1 = p + theme(
    title = elementText(size=18),
    plotTitle = elementText(face="bold"),
    plotCaption = elementText(size=12, face="italic"),
    axisText = elementText(size=14, face="italic"),
    tooltipText = elementText(size=15)
)
p1

Out[6]:

In [7]:

// Font family.
p1 + theme(text = elementText(family="Times New Roman"))

Out[7]: