学步园

wb.add_worksheet(:name => "Pie Chart") do |sheet|
  sheet.add_row ["First", "Second", "Third", "Fourth"]
  sheet.add_row [1, 2, 3, 4]
  sheet.add_chart(Axlsx::Pie3DChart, :start_at => [0,2], :end_at => [5, 15], :title=> 'dark corner here') do |chart|
    chart.add_series :data => sheet["A2:D2"], :labels => sheet["A1:D1"]    #数据点序列及其名称
    chart.d_lbls.show_val = true       #是否在饼状图中显示数值
    chart.d_lbls.show_percent = true    #是否在饼状图中显示所占百分比
    chart.d_lbls.d_lbl_pos = :outEnd    #图例位于图标外部
    chart.d_lbls.show_leader_lines = true  #是否显示数据和数值间的指示线
  end
end

      在add_chart方法中，第一个参数指定图标的类型Aslsx::Pie3DChart，而start_at和end_at分别指定图表的左上角单元格和右下角+1单元格，注意图中饼图的右下角单元格是E15即[4,14]，而end_at是[5,15]，所以称为右下角+1单元格，此外注意和excel编号不同，这里单元格序号是从0开始的。

chart.add_series :data => sheet["A2:D2"], :labels => ["A1:D1"], :colors => ['FF0000', '00FF00', '0000FF']

折线图

 wb.add_worksheet(:name => "Line Chart") do |sheet|
  sheet.add_row ['l1','l2','l3','l4']
  sheet.add_row [1, 2, 100, '=sum(A2:C2)']
  sheet.add_chart(Axlsx::Line3DChart, :start_at => [0,2], :end_at => [8, 17], :title => "Chart") do |chart|
    chart.add_series :data => sheet["A2:D2"], :labels => sheet["A1:D1"], :title => 'bob'
    chart.d_lbls.show_val = true
    chart.d_lbls.show_cat_name = true
    chart.catAxis.tick_lbl_pos = :none   #不在横轴上显示坐标

  end
 end

    chart.d_lbls.show_val表示显示数值，而chart.d_lbls.show_cat_name表示显示每个数值的名称。

wb.add_worksheet(:name => "Bar Chart") do |sheet|
  sheet.add_row ["A Simple Bar Chart"]
  sheet.add_row ["First", "Second", "Third"]
  sheet.add_row [1, 2, 3]
  sheet.add_chart(Axlsx::Bar3DChart, :start_at => "A4", :end_at => "F17") do |chart|
    chart.add_series :data => sheet["A3:C3"], :labels => sheet["A2:C2"], :title => sheet["A1"]
    chart.valAxis.label_rotation = -45
    chart.catAxis.label_rotation = 45
    chart.d_lbls.d_lbl_pos = :outEnd
    chart.d_lbls.show_val = true

    chart.catAxis.tick_lbl_pos = :none
  end
  sheet.add_chart(Axlsx::Bar3DChart, :barDir => :col,:start_at => "A17", :end_at => "F30") do |chart| #barDir指定方向:bar或:col
    chart.add_series :data => sheet["A3:C3"], :labels => sheet["A2:C2"], :title => sheet["A1"]
    chart.valAxis.label_rotation = -45
    chart.catAxis.label_rotation = 45
    chart.d_lbls.d_lbl_pos = :outEnd
    chart.d_lbls.show_val = true

    chart.catAxis.tick_lbl_pos = :none
  end
 end

      这里的图表位置start_at和end_at使用了和上面不同的方式，直接使用单元格名称如A4，F17，但end_at仍然是右下角单元格+1。其他代码的自解释性很强，无须赘述了。