Lets-Plot Kotlin API
A Grammar of Graphics for Kotlin.

Lets-Plot Kotlin API is a Kotlin API for Lets-Plot Multiplatform
plotting library,
which is built on the principles of layered graphics first described in the
Leland Wilkinson work The Grammar of Graphics.
Quickstart
Inside Kotlin Notebook,
Datalore or
Jupyter with Kotlin Kernel:
%use lets-plot
val rand = java.util.Random()
val data = mapOf(
"rating" to List(200) { rand.nextGaussian() } + List(200) { rand.nextGaussian() * 1.5 + 1.5 },
"cond" to List() { } + List() { }
)
p = letsPlot()
p += geomDensity(color = , alpha = ) { x = ; fill = }
p + ggsize(, )
See the "Quickstart" notebook in Datalore or
Jupyter nbviewer.
Table of Contents
Usage
Notebooks
With the help of Lets-Plot Kotlin API you can easily create plots in Kotlin Notebook,
Datalore, Jupyter with Kotlin Kernel
or any other notebook that supports Kotlin Kernel.
"Line Magics"
%use lets-plot
This "line magic" will apply Lets-Plot library descriptor which adds to your notebook all the boilerplate code necessary to create plots.
By default, library descriptor is bundled with the Kotlin Jupyter Kernel installed in your environment.
However, you can override the default settings using:
%useLatestDescriptors
In this case the latest library descriptor will be pulled from the Kotlin Jupyter Libraries repository.
Library Descriptor Parameters
%use lets-plot(v=4.15.0, isolatedFrame=false, output="js, ktnb, svg")
Compose Multiplatform
To learn how to embed Lets-Plot charts in Compose Multiplatform applications, please check out the Lets-Plot Compose Frontend project at GitHub.
JVM and Kotlin/JS
To learn more about creating plots in JVM or Kotlin/JS environment, please read USAGE_JVM_JS.md.
Examples
Examples of using the Lets-Plot Kotlin API in JVM and Kotlin/JS applications are available in the Lets-Plot Kotlin Mini Apps (Demos) GitHub repository.
Documentation
-
Lets-Plot Kotlin API documentation and API reference: Lets-Plot for Kotlin
-
A quick introduction to the Grammar of Graphics and Lets-Plot Kotlin API: Lets-Plot Usage Guide
Recent Updates in the Gallery
Change Log
See CHANGELOG.md.
Code of Conduct
This project and the corresponding community are governed by the
JetBrains Open Source and Community Code of Conduct.
Please make sure you read it.
License
Code and documentation released under
the MIT license.
Copyright © 2019-2025, JetBrains s.r.o.