require 'daru/view'

Daru::View.plotting_library = :highcharts

    data = [[0, 15], [10, -50], [20, -56.5], [30, -46.5], [40, -22.1],
              [50, -2.5], [60, -27.7], [70, -55.7], [80, -76.5]]
    opts = {
      chart:  {
              type: 'spline',
              inverted: true
          },
      title: {
          text: 'Atmosphere Temperature by Altitude'
      },
      subtitle: {
          text: 'According to the Standard Atmosphere Model'
      },
      xAxis: {
          reversed: false,
          title: {
              enabled: true,
              text: 'Altitude'
          },
          labels: {
              formatter: "function () {
                  return this.value + 'km';
              }".js_code
          },
          maxPadding: 0.05,
          showLastLabel: true
      },
      yAxis:{
          title: {
              text: 'Temperature'
          },
          labels: {
              formatter: "function () {
                  return this.value + '°';
              }".js_code
          },
          lineWidth: 2
      },
      legend:{
          enabled: false
      },
      tooltip:{
          headerFormat: '<b>{series.name}</b><br/>',
          pointFormat: '{point.x} km: {point.y}°C'
      },
      plotOptions:{
          spline: {
              marker: {
                  enable: false
              }
          }
      },
    }

chart1 = Daru::View::Plot.new data, opts

chart1.show_in_iruby

# add another chart 
chart1.add_series({
        :data => [[10, 15], [20, -50], [30, -56.5], [40, -46.5], [50, -22.1],
              [55, -2.5], [65, -27.7], [80, -55.7], [90, -76.5]]})

# add another chart
opts = {
  :type=> 'pie',:name=> 'Total consumption',
  :data=> [
    {:name=> 'Jane', :y=> 13, :color=> 'red'},
    {:name=> 'John', :y=> 23,:color=> 'green'},
    {:name=> 'Joe', :y=> 19,:color=> 'blue'}
  ],
  :center=> [100, 150], :size=> 100, :showInLegend=> false
}
chart1.add_series(opts)
chart1.show_in_iruby

chart1.chart.class

chart1.chart.series_data

chart1.chart.series_data[2]

# all te series options can be updated
# removing last pie chart, that was added
chart1.chart.series_data[2] = {}

chart1.show_in_iruby

chart1.chart.options

# all the `options` can be set or updated
chart1.chart.options[:chart][:inverted] = false

chart1.div

chart1.show_in_iruby # or do chart1.chart (but it will show chart when notebook is saved)

# can be updated
chart1.chart.placeholder

# can be updated
chart1.chart.html_options

chart1.chart.html_options[:style] = "opacity: 0.5; height: 720px; width: 1020px"

chart1.show_in_iruby