require 'daru/view'

Daru::View.plotting_library = :highcharts

   # bar-basic chart : basic
    opts = {
      chart: {
          type: 'bar',
      },
      title: {
          text: 'Historic World Population by Region'
      },
      subtitle: {
          text: 'Source: <a href="https://en.wikipedia.org/wiki/World_population">Wikipedia.org</a>'
      },
      xAxis: {
          categories: ['Africa', 'America', 'Asia', 'Europe', 'Oceania'],
          title: {
              text: nil
          }
      },
      yAxis: {
          min: 0,
          title: {
              text: 'Population (millions)',
              align: 'high'
          },
          labels: {
              overflow: 'justify'
          }
      },
      tooltip: {
          valueSuffix: ' millions'
      },
      plotOptions: {
          bar: {
              dataLabels: {
                  enabled: true
              }
          }
      },
      legend: {
          layout: 'vertical',
          align: 'right',
          verticalAlign: 'top',
          x: -40,
          y: 80,
          floating: true,
          borderWidth: 1,
          backgroundColor: "((Highcharts.theme && Highcharts.theme.legendBackgroundColor) || '#FFFFFF')".js_code,
          shadow: true
      },
      credits: {
          enabled: false
      },
    }

    series_dt = [
      {
          name: 'Year 1800',
          data: [107, 31, 635, 203, 2]
      }, {
          name: 'Year 1900',
          data: [133, 156, 947, 408, 6]
      }, {
          name: 'Year 2012',
          data: [1052, 954, 4250, 740, 38]
      }
    ]

bar_basic = Daru::View::Plot.new(series_dt, opts)
bar_basic.show_in_iruby

    # bar-basic chart : stacked
    opts = {
      chart: {
          type: 'bar'
      },
      title: {
          text: 'Stacked bar chart'
      },
      xAxis: {
          categories: ['Apples', 'Oranges', 'Pears', 'Grapes', 'Bananas']
      },
      yAxis: {
          min: 0,
          title: {
              text: 'Total fruit consumption'
          }
      },
      legend: {
          reversed: true
      },
      plotOptions: {
          series: {
              stacking: 'normal'
          }
      },
    }

    series_dt = [
      {
          name: 'John',
          data: [5, 3, 4, 7, 2]
      }, {
          name: 'Jane',
          data: [2, 2, 3, 2, 1]
      }, {
          name: 'Joe',
          data: [3,4,4,2,5]
        }
    ]

bar_stacked = Daru::View::Plot.new(series_dt, opts)
bar_stacked.show_in_iruby

    # bar-basic chart : bar-negative-stack/
    categories = ['0-4', '5-9', '10-14', '15-19',
        '20-24', '25-29', '30-34', '35-39', '40-44',
        '45-49', '50-54', '55-59', '60-64', '65-69',
        '70-74', '75-79', '80-84', '85-89', '90-94',
        '95-99', '100 + ']
    opts = {
        chart: {
            type: 'bar'
        },
        title: {
            text: 'Population pyramid for Germany, 2015'
        },
        subtitle: {
            text: 'Source: <a href="http://populationpyramid.net/germany/2015/">Population Pyramids of the World from 1950 to 2100</a>'
        },
        xAxis: [{
            categories: categories,
            reversed: false,
            labels: {
                step: 1
            }
        }, { # mirror axis on right side
            opposite: true,
            reversed: false,
            categories: categories,
            linkedTo: 0,
            labels: {
                step: 1
            }
        }],
        yAxis: {
            title: {
                text: nil
            },
            labels: {
                formatter: "function () {
                                    return Math.abs(this.value) + '%';
                                }".js_code
            }
        },

        plotOptions: {
            series: {
                stacking: 'normal'
            }
        },

        tooltip: {
            formatter: "function () {
                            return '<b>' + this.series.name + ', age ' + this.point.category + '</b><br/>' +
                                'Population: ' + Highcharts.numberFormat(Math.abs(this.point.y), 0);
                        }".js_code
        },
    }

    series_dt = [
      {
            name: 'Male',
            data: [-2.2, -2.2, -2.3, -2.5, -2.7, -3.1, -3.2,
                -3.0, -3.2, -4.3, -4.4, -3.6, -3.1, -2.4,
                -2.5, -2.3, -1.2, -0.6, -0.2, -0.0, -0.0]
        }, {
            name: 'Female',
            data: [2.1, 2.0, 2.2, 2.4, 2.6, 3.0, 3.1, 2.9,
                3.1, 4.1, 4.3, 3.6, 3.4, 2.6, 2.9, 2.9,
                1.8, 1.2, 0.6, 0.1, 0.0]
        }
    ]
bar_neg_stacked = Daru::View::Plot.new(series_dt, opts)
bar_neg_stacked.show_in_iruby