smile scatter vega visualization / published by https://github.com/dacr/code-examples-manager #17c4473f-fde6-43ff-80a0-54913a975c82/34559ed0d22b568115d81b877011973c5b232896

visualization-vega-scatter.sc

// summary : smile scatter vega visualization
// keywords : smile, chart, visualization, scatter, vega
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 17c4473f-fde6-43ff-80a0-54913a975c82
// created-on : 2021-03-05T09:23:01Z
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.4.2"
//> using dep "com.github.pathikrit::better-files:3.9.2"
//> using dep "com.github.haifengl::smile-scala:3.1.1"
//> using dep "org.slf4j:slf4j-nop:2.0.13"
//> using dep "com.lihaoyi::requests:0.9.0"
// ---------------------


import scala.language.postfixOps
import scala.language.existentials
import better.files.*
import smile.read

import smile.plot.vega.* // FOR VEGA RENDERING
//import smile.plot.*

// examples coming from http://haifengl.github.io/visualization.html

// --------------------------------------------------------------------

val inputFileName = "iris.arff"
val inputFile = inputFileName.toFile
if (inputFile.notExists) {
  val url = "https://gist.githubusercontent.com/myui/143fa9d05bd6e7db0114/raw/500f178316b802f1cade6e3bf8dc814a96e84b1e/iris.arff"
  for {out <- inputFile.newOutputStream.autoClosed} {requests.get(url).writeBytesTo(out)}
}

// --------------------------------------------------------------------
{
  val iris = read.arff("iris.arff")
  val splom = VegaLite.splom(iris, "class").title("Scatter Plot Matrix")
  splom.show(true)
}
// --------------------------------------------------------------------

println("enter to exit"); scala.io.StdIn.readLine()