plotting with chartreuse - photo count trend / published by https://github.com/dacr/code-examples-manager #fcc44436-bf5f-4bf2-9531-6656f9b6f7fa/a7f231a889e6d204cfc25e0213520de71433c2ad

chartreuse-photos-count.sc

// summary : plotting with chartreuse - photo count trend
// keywords : chartreuse, plotting
// publish : gist
// authors : David Crosson
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : fcc44436-bf5f-4bf2-9531-6656f9b6f7fa
// created-on : 2024-08-21T16:42:51+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file
// attachments : data-taken-photos.csv

// ---------------------
//> using scala "3.4.2"
//> using dep "org.creativescala::chartreuse-core:0.2.0"
// ---------------------

import chartreuse.{*, given}
import doodle.core.{Color, Point}
import chartreuse.layout.*

import java.time.{Instant, ZoneOffset}
import scala.io.Source
import cats.effect.unsafe.implicits.global
import doodle.java2d.*
import doodle.syntax.all.*

val dataRE = """(\d+),(\d+)""".r
val data   =
  Source
    .fromFile("data-taken-photos.csv")
    .getLines()
    .collect { case dataRE(epoch, value) => Instant.ofEpochMilli(epoch.toLong).atOffset(ZoneOffset.UTC).getYear -> value.toInt }
    .toList
    .map((year, count) => Point(year, count))

val layout =
  Line
    .default[Point]
    .forThemeable(theme =>
      theme
        .withStrokeWidth(3d)
        .withStrokeColor(Color.blue)
    )

val plot =
  layout
    .toPlot(data)
    .withPlotTitle("How many photos taken each year")
    .withXTitle("Year")
    .withYTitle("Photo count")

val picture = plot.draw(800, 300)

picture.draw()

data-taken-photos.csv