Update KDF versions in examples and add Kandy example in KDFCP project

Author: AndreiKingsley

examples/android-example/app/build.gradle.kts

@@ -64,13 +64,12 @@ dependencies {
     debugImplementation(libs.androidx.ui.tooling)
     debugImplementation(libs.androidx.ui.test.manifest)
 
-    // TODO update version
     // Core Kotlin DataFrame API, JSON and CSV IO.
     // See custom Gradle setup:
     // https://kotlin.github.io/dataframe/setupcustomgradle.html
-    implementation("org.jetbrains.kotlinx:dataframe-core:1.0.0-Beta3")
-    implementation("org.jetbrains.kotlinx:dataframe-json:1.0.0-Beta3")
-    implementation("org.jetbrains.kotlinx:dataframe-csv:1.0.0-Beta3")
+    implementation("org.jetbrains.kotlinx:dataframe-core:1.0.0-Beta4")
+    implementation("org.jetbrains.kotlinx:dataframe-json:1.0.0-Beta4")
+    implementation("org.jetbrains.kotlinx:dataframe-csv:1.0.0-Beta4")
     // You can add any additional IO modules you like, except for 'dataframe-arrow'.
     // Apache Arrow is not supported well on Android.
 }

examples/android-example/gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 agp = "8.11.1"
-kotlin = "2.2.20"
+kotlin = "2.3.0-RC2"
 coreKtx = "1.10.1"
 junit = "4.13.2"
 junitVersion = "1.1.5"

examples/kotlin-dataframe-plugin-example/build.gradle.kts

@@ -3,21 +3,26 @@ import org.jlleitschuh.gradle.ktlint.KtlintExtension
 plugins {
     id("org.jlleitschuh.gradle.ktlint") version "12.3.0"
 
-    val kotlinVersion = "2.2.20"
+    val kotlinVersion = "2.3.0-RC2"
     kotlin("jvm") version kotlinVersion
+    // Add the Kotlin DataFrame Compiler plugin of the same version as the Kotlin plugin.
     kotlin("plugin.dataframe") version kotlinVersion
+
+    application
 }
 
 group = "org.example"
 version = "1.0-SNAPSHOT"
 
 repositories {
-    maven("https://packages.jetbrains.team/maven/p/kt/dev/")
     mavenCentral()
 }
 
 dependencies {
-    implementation("org.jetbrains.kotlinx:dataframe:1.0.0-Beta3")
+    // Add general `dataframe` dependency
+    implementation("org.jetbrains.kotlinx:dataframe:1.0.0-Beta4")
+    // Add `kandy` dependency
+    implementation("org.jetbrains.kotlinx:kandy-lets-plot:0.8.3")
     testImplementation(kotlin("test"))
 }
 

examples/kotlin-dataframe-plugin-example/src/main/kotlin/org/jetbrains/kotlinx/dataframe/examples/plugin/Main.kt

@@ -3,15 +3,22 @@ package org.jetbrains.kotlinx.dataframe.examples.plugin
 import org.jetbrains.kotlinx.dataframe.DataFrame
 import org.jetbrains.kotlinx.dataframe.annotations.DataSchema
 import org.jetbrains.kotlinx.dataframe.api.add
+import org.jetbrains.kotlinx.dataframe.api.aggregate
 import org.jetbrains.kotlinx.dataframe.api.convert
 import org.jetbrains.kotlinx.dataframe.api.convertTo
 import org.jetbrains.kotlinx.dataframe.api.filter
+import org.jetbrains.kotlinx.dataframe.api.groupBy
 import org.jetbrains.kotlinx.dataframe.api.into
+import org.jetbrains.kotlinx.dataframe.api.max
 import org.jetbrains.kotlinx.dataframe.api.rename
 import org.jetbrains.kotlinx.dataframe.api.renameToCamelCase
 import org.jetbrains.kotlinx.dataframe.api.with
 import org.jetbrains.kotlinx.dataframe.io.readCsv
 import org.jetbrains.kotlinx.dataframe.io.writeCsv
+import org.jetbrains.kotlinx.kandy.dsl.plot
+import org.jetbrains.kotlinx.kandy.letsplot.export.save
+import org.jetbrains.kotlinx.kandy.letsplot.feature.layout
+import org.jetbrains.kotlinx.kandy.letsplot.layers.bars
 import java.net.URL
 
 // Declare data schema for the DataFrame from jetbrains_repositories.csv.
@@ -83,11 +90,21 @@ fun main() {
     // Write the updated DataFrame to a CSV file.
     reposUpdated.writeCsv("jetbrains_repositories_new.csv")
 
-    // TODO: Add Kandy Plot
-    //  reposUpdated.groupBy { kind }.max { stargazersCount  }.plot {
-    //      bars {
-    //          x(kind)
-    //          y(stargazersCount)
-    //      }
-    //  }
+    reposUpdated
+        // Group repositories by kind
+        .groupBy { kind }
+        // And then compute the maximum stars in each group.
+        .aggregate {
+            max { stars } into "maxStars"
+        }
+        // Build a bar plot showing the maximum number of stars per repository kind.
+        .plot {
+            bars {
+                x(kind)
+                y(maxStars)
+            }
+            layout.title = "Max stars per repo kind"
+        }
+        // Save the plot to an SVG file.
+        .save("kindToStars.svg")
 }