Resolve #311, create 2D/3D area, stacked area, 100% stacked area chart support

chart.go

@@ -18,112 +18,142 @@ import (
 
 // This section defines the currently supported chart types.
 const (
-	Bar                 = "bar"
-	BarStacked          = "barStacked"
-	BarPercentStacked   = "barPercentStacked"
-	Bar3DClustered      = "bar3DClustered"
-	Bar3DStacked        = "bar3DStacked"
-	Bar3DPercentStacked = "bar3DPercentStacked"
-	Col                 = "col"
-	ColStacked          = "colStacked"
-	ColPercentStacked   = "colPercentStacked"
-	Col3DClustered      = "col3DClustered"
-	Col3D               = "col3D"
-	Col3DStacked        = "col3DStacked"
-	Col3DPercentStacked = "col3DPercentStacked"
-	Doughnut            = "doughnut"
-	Line                = "line"
-	Pie                 = "pie"
-	Pie3D               = "pie3D"
-	Radar               = "radar"
-	Scatter             = "scatter"
+	Area                 = "area"
+	AreaStacked          = "areaStacked"
+	AreaPercentStacked   = "areaPercentStacked"
+	Area3D               = "area3D"
+	Area3DStacked        = "area3DStacked"
+	Area3DPercentStacked = "area3DPercentStacked"
+	Bar                  = "bar"
+	BarStacked           = "barStacked"
+	BarPercentStacked    = "barPercentStacked"
+	Bar3DClustered       = "bar3DClustered"
+	Bar3DStacked         = "bar3DStacked"
+	Bar3DPercentStacked  = "bar3DPercentStacked"
+	Col                  = "col"
+	ColStacked           = "colStacked"
+	ColPercentStacked    = "colPercentStacked"
+	Col3DClustered       = "col3DClustered"
+	Col3D                = "col3D"
+	Col3DStacked         = "col3DStacked"
+	Col3DPercentStacked  = "col3DPercentStacked"
+	Doughnut             = "doughnut"
+	Line                 = "line"
+	Pie                  = "pie"
+	Pie3D                = "pie3D"
+	Radar                = "radar"
+	Scatter              = "scatter"
 )
 
 // This section defines the default value of chart properties.
 var (
 	chartView3DRotX = map[string]int{
-		Bar:                 0,
-		BarStacked:          0,
-		BarPercentStacked:   0,
-		Bar3DClustered:      15,
-		Bar3DStacked:        15,
-		Bar3DPercentStacked: 15,
-		Col:                 0,
-		ColStacked:          0,
-		ColPercentStacked:   0,
-		Col3DClustered:      15,
-		Col3D:               15,
-		Col3DStacked:        15,
-		Col3DPercentStacked: 15,
-		Doughnut:            0,
-		Line:                0,
-		Pie:                 0,
-		Pie3D:               30,
-		Radar:               0,
-		Scatter:             0,
+		Area:                 0,
+		AreaStacked:          0,
+		AreaPercentStacked:   0,
+		Area3D:               15,
+		Area3DStacked:        15,
+		Area3DPercentStacked: 15,
+		Bar:                  0,
+		BarStacked:           0,
+		BarPercentStacked:    0,
+		Bar3DClustered:       15,
+		Bar3DStacked:         15,
+		Bar3DPercentStacked:  15,
+		Col:                  0,
+		ColStacked:           0,
+		ColPercentStacked:    0,
+		Col3DClustered:       15,
+		Col3D:                15,
+		Col3DStacked:         15,
+		Col3DPercentStacked:  15,
+		Doughnut:             0,
+		Line:                 0,
+		Pie:                  0,
+		Pie3D:                30,
+		Radar:                0,
+		Scatter:              0,
 	}
 	chartView3DRotY = map[string]int{
-		Bar:                 0,
-		BarStacked:          0,
-		BarPercentStacked:   0,
-		Bar3DClustered:      20,
-		Bar3DStacked:        20,
-		Bar3DPercentStacked: 20,
-		Col:                 0,
-		ColStacked:          0,
-		ColPercentStacked:   0,
-		Col3DClustered:      20,
-		Col3D:               20,
-		Col3DStacked:        20,
-		Col3DPercentStacked: 20,
-		Doughnut:            0,
-		Line:                0,
-		Pie:                 0,
-		Pie3D:               0,
-		Radar:               0,
-		Scatter:             0,
+		Area:                 0,
+		AreaStacked:          0,
+		AreaPercentStacked:   0,
+		Area3D:               20,
+		Area3DStacked:        20,
+		Area3DPercentStacked: 20,
+		Bar:                  0,
+		BarStacked:           0,
+		BarPercentStacked:    0,
+		Bar3DClustered:       20,
+		Bar3DStacked:         20,
+		Bar3DPercentStacked:  20,
+		Col:                  0,
+		ColStacked:           0,
+		ColPercentStacked:    0,
+		Col3DClustered:       20,
+		Col3D:                20,
+		Col3DStacked:         20,
+		Col3DPercentStacked:  20,
+		Doughnut:             0,
+		Line:                 0,
+		Pie:                  0,
+		Pie3D:                0,
+		Radar:                0,
+		Scatter:              0,
 	}
 	chartView3DDepthPercent = map[string]int{
-		Bar:                 100,
-		BarStacked:          100,
-		BarPercentStacked:   100,
-		Bar3DClustered:      100,
-		Bar3DStacked:        100,
-		Bar3DPercentStacked: 100,
-		Col:                 100,
-		ColStacked:          100,
-		ColPercentStacked:   100,
-		Col3DClustered:      100,
-		Col3D:               100,
-		Col3DStacked:        100,
-		Col3DPercentStacked: 100,
-		Doughnut:            100,
-		Line:                100,
-		Pie:                 100,
-		Pie3D:               100,
-		Radar:               100,
-		Scatter:             100,
+		Area:                 100,
+		AreaStacked:          100,
+		AreaPercentStacked:   100,
+		Area3D:               100,
+		Area3DStacked:        100,
+		Area3DPercentStacked: 100,
+		Bar:                  100,
+		BarStacked:           100,
+		BarPercentStacked:    100,
+		Bar3DClustered:       100,
+		Bar3DStacked:         100,
+		Bar3DPercentStacked:  100,
+		Col:                  100,
+		ColStacked:           100,
+		ColPercentStacked:    100,
+		Col3DClustered:       100,
+		Col3D:                100,
+		Col3DStacked:         100,
+		Col3DPercentStacked:  100,
+		Doughnut:             100,
+		Line:                 100,
+		Pie:                  100,
+		Pie3D:                100,
+		Radar:                100,
+		Scatter:              100,
 	}
 	chartView3DRAngAx = map[string]int{
-		Bar:                 0,
-		BarStacked:          0,
-		BarPercentStacked:   0,
-		Bar3DClustered:      1,
-		Bar3DStacked:        1,
-		Bar3DPercentStacked: 1,
-		Col:                 0,
-		ColStacked:          0,
-		ColPercentStacked:   0,
-		Col3DClustered:      1,
-		Col3D:               1,
-		Col3DStacked:        1,
-		Col3DPercentStacked: 1,
-		Doughnut:            0,
-		Line:                0,
-		Pie:                 0,
-		Pie3D:               0,
-		Radar:               0,
-		Scatter:             0,
+		Area:                 0,
+		AreaStacked:          0,
+		AreaPercentStacked:   0,
+		Area3D:               1,
+		Area3DStacked:        1,
+		Area3DPercentStacked: 1,
+		Bar:                  0,
+		BarStacked:           0,
+		BarPercentStacked:    0,
+		Bar3DClustered:       1,
+		Bar3DStacked:         1,
+		Bar3DPercentStacked:  1,
+		Col:                  0,
+		ColStacked:           0,
+		ColPercentStacked:    0,
+		Col3DClustered:       1,
+		Col3D:                1,
+		Col3DStacked:         1,
+		Col3DPercentStacked:  1,
+		Doughnut:             0,
+		Line:                 0,
+		Pie:                  0,
+		Pie3D:                0,
+		Radar:                0,
+		Scatter:              0,
 	}
 	chartLegendPosition = map[string]string{
 		"bottom":    "b",
@@ -133,41 +163,80 @@ var (
 		"top_right": "tr",
 	}
 	chartValAxNumFmtFormatCode = map[string]string{
-		Bar:                 "General",
-		BarStacked:          "General",
-		BarPercentStacked:   "0%",
-		Bar3DClustered:      "General",
-		Bar3DStacked:        "General",
-		Bar3DPercentStacked: "0%",
-		Col:                 "General",
-		ColStacked:          "General",
-		ColPercentStacked:   "0%",
-		Col3DClustered:      "General",
-		Col3D:               "General",
-		Col3DStacked:        "General",
-		Col3DPercentStacked: "0%",
-		Doughnut:            "General",
-		Line:                "General",
-		Pie:                 "General",
-		Pie3D:               "General",
-		Radar:               "General",
-		Scatter:             "General",
+		Area:                 "General",
+		AreaStacked:          "General",
+		AreaPercentStacked:   "0%",
+		Area3D:               "General",
+		Area3DStacked:        "General",
+		Area3DPercentStacked: "0%",
+		Bar:                  "General",
+		BarStacked:           "General",
+		BarPercentStacked:    "0%",
+		Bar3DClustered:       "General",
+		Bar3DStacked:         "General",
+		Bar3DPercentStacked:  "0%",
+		Col:                  "General",
+		ColStacked:           "General",
+		ColPercentStacked:    "0%",
+		Col3DClustered:       "General",
+		Col3D:                "General",
+		Col3DStacked:         "General",
+		Col3DPercentStacked:  "0%",
+		Doughnut:             "General",
+		Line:                 "General",
+		Pie:                  "General",
+		Pie3D:                "General",
+		Radar:                "General",
+		Scatter:              "General",
+	}
+	chartValAxCrossBetween = map[string]string{
+		Area:                 "midCat",
+		AreaStacked:          "midCat",
+		AreaPercentStacked:   "midCat",
+		Area3D:               "midCat",
+		Area3DStacked:        "midCat",
+		Area3DPercentStacked: "midCat",
+		Bar:                  "between",
+		BarStacked:           "between",
+		BarPercentStacked:    "between",
+		Bar3DClustered:       "between",
+		Bar3DStacked:         "between",
+		Bar3DPercentStacked:  "between",
+		Col:                  "between",
+		ColStacked:           "between",
+		ColPercentStacked:    "between",
+		Col3DClustered:       "between",
+		Col3D:                "between",
+		Col3DStacked:         "between",
+		Col3DPercentStacked:  "between",
+		Doughnut:             "between",
+		Line:                 "between",
+		Pie:                  "between",
+		Pie3D:                "between",
+		Radar:                "between",
+		Scatter:              "between",
 	}
 	plotAreaChartGrouping = map[string]string{
-		Bar:                 "clustered",
-		BarStacked:          "stacked",
-		BarPercentStacked:   "percentStacked",
-		Bar3DClustered:      "clustered",
-		Bar3DStacked:        "stacked",
-		Bar3DPercentStacked: "percentStacked",
-		Col:                 "clustered",
-		ColStacked:          "stacked",
-		ColPercentStacked:   "percentStacked",
-		Col3DClustered:      "clustered",
-		Col3D:               "standard",
-		Col3DStacked:        "stacked",
-		Col3DPercentStacked: "percentStacked",
-		Line:                "standard",
+		Area:                 "standard",
+		AreaStacked:          "stacked",
+		AreaPercentStacked:   "percentStacked",
+		Area3D:               "standard",
+		Area3DStacked:        "stacked",
+		Area3DPercentStacked: "percentStacked",
+		Bar:                  "clustered",
+		BarStacked:           "stacked",
+		BarPercentStacked:    "percentStacked",
+		Bar3DClustered:       "clustered",
+		Bar3DStacked:         "stacked",
+		Bar3DPercentStacked:  "percentStacked",
+		Col:                  "clustered",
+		ColStacked:           "stacked",
+		ColPercentStacked:    "percentStacked",
+		Col3DClustered:       "clustered",
+		Col3D:                "standard",
+		Col3DStacked:         "stacked",
+		Col3DPercentStacked:  "percentStacked",
+		Line:                 "standard",
 	}
 	plotAreaChartBarDir = map[string]string{
 		Bar:                 "bar",
@@ -262,27 +331,33 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // The following shows the type of chart supported by excelize:
 //
-//     Type                | Chart
-//    ---------------------+------------------------------
-//     bar                 | 2D clustered bar chart
-//     barStacked          | 2D stacked bar chart
-//     barPercentStacked   | 2D 100% stacked bar chart
-//     bar3DClustered      | 3D clustered bar chart
-//     bar3DStacked        | 3D stacked bar chart
-//     bar3DPercentStacked | 3D 100% stacked bar chart
-//     col                 | 2D clustered column chart
-//     colStacked          | 2D stacked column chart
-//     colPercentStacked   | 2D 100% stacked column chart
-//     col3DClustered      | 3D clustered column chart
-//     col3D               | 3D column chart
-//     col3DStacked        | 3D stacked column chart
-//     col3DPercentStacked | 3D 100% stacked column chart
-//     doughnut            | doughnut chart
-//     line                | line chart
-//     pie                 | pie chart
-//     pie3D               | 3D pie chart
-//     radar               | radar chart
-//     scatter             | scatter chart
+//     Type                 | Chart
+//    ----------------------+------------------------------
+//     area                 | 2D area chart
+//     areaStacked          | 2D stacked area chart
+//     areaPercentStacked   | 2D 100% stacked area chart
+//     area3D               | 3D area chart
+//     area3DStacked        | 3D stacked area chart
+//     area3DPercentStacked | 3D 100% stacked area chart
+//     bar                  | 2D clustered bar chart
+//     barStacked           | 2D stacked bar chart
+//     barPercentStacked    | 2D 100% stacked bar chart
+//     bar3DClustered       | 3D clustered bar chart
+//     bar3DStacked         | 3D stacked bar chart
+//     bar3DPercentStacked  | 3D 100% stacked bar chart
+//     col                  | 2D clustered column chart
+//     colStacked           | 2D stacked column chart
+//     colPercentStacked    | 2D 100% stacked column chart
+//     col3DClustered       | 3D clustered column chart
+//     col3D                | 3D column chart
+//     col3DStacked         | 3D stacked column chart
+//     col3DPercentStacked  | 3D 100% stacked column chart
+//     doughnut             | doughnut chart
+//     line                 | line chart
+//     pie                  | pie chart
+//     pie3D                | 3D pie chart
+//     radar                | radar chart
+//     scatter              | scatter chart
 //
 // In Excel a chart series is a collection of information that defines which data is plotted such as values, axis labels and formatting.
 //
@@ -546,25 +621,31 @@ func (f *File) addChart(formatSet *formatChart) {
 		},
 	}
 	plotAreaFunc := map[string]func(*formatChart) *cPlotArea{
-		Bar:                 f.drawBaseChart,
-		BarStacked:          f.drawBaseChart,
-		BarPercentStacked:   f.drawBaseChart,
-		Bar3DClustered:      f.drawBaseChart,
-		Bar3DStacked:        f.drawBaseChart,
-		Bar3DPercentStacked: f.drawBaseChart,
-		Col:                 f.drawBaseChart,
-		ColStacked:          f.drawBaseChart,
-		ColPercentStacked:   f.drawBaseChart,
-		Col3DClustered:      f.drawBaseChart,
-		Col3D:               f.drawBaseChart,
-		Col3DStacked:        f.drawBaseChart,
-		Col3DPercentStacked: f.drawBaseChart,
-		Doughnut:            f.drawDoughnutChart,
-		Line:                f.drawLineChart,
-		Pie3D:               f.drawPie3DChart,
-		Pie:                 f.drawPieChart,
-		Radar:               f.drawRadarChart,
-		Scatter:             f.drawScatterChart,
+		Area:                 f.drawBaseChart,
+		AreaStacked:          f.drawBaseChart,
+		AreaPercentStacked:   f.drawBaseChart,
+		Area3D:               f.drawBaseChart,
+		Area3DStacked:        f.drawBaseChart,
+		Area3DPercentStacked: f.drawBaseChart,
+		Bar:                  f.drawBaseChart,
+		BarStacked:           f.drawBaseChart,
+		BarPercentStacked:    f.drawBaseChart,
+		Bar3DClustered:       f.drawBaseChart,
+		Bar3DStacked:         f.drawBaseChart,
+		Bar3DPercentStacked:  f.drawBaseChart,
+		Col:                  f.drawBaseChart,
+		ColStacked:           f.drawBaseChart,
+		ColPercentStacked:    f.drawBaseChart,
+		Col3DClustered:       f.drawBaseChart,
+		Col3D:                f.drawBaseChart,
+		Col3DStacked:         f.drawBaseChart,
+		Col3DPercentStacked:  f.drawBaseChart,
+		Doughnut:             f.drawDoughnutChart,
+		Line:                 f.drawLineChart,
+		Pie3D:                f.drawPie3DChart,
+		Pie:                  f.drawPieChart,
+		Radar:                f.drawRadarChart,
+		Scatter:              f.drawScatterChart,
 	}
 	xlsxChartSpace.Chart.PlotArea = plotAreaFunc[formatSet.Type](formatSet)
 
@@ -593,14 +674,48 @@ func (f *File) drawBaseChart(formatSet *formatChart) *cPlotArea {
 			{Val: 753999904},
 		},
 	}
-	c.BarDir.Val = plotAreaChartBarDir[formatSet.Type]
+	var ok bool
+	c.BarDir.Val, ok = plotAreaChartBarDir[formatSet.Type]
+	if !ok {
+		c.BarDir = nil
+	}
 	c.Grouping.Val = plotAreaChartGrouping[formatSet.Type]
-	if formatSet.Type == "colStacked" || formatSet.Type == "barStacked" || formatSet.Type == "barPercentStacked" || formatSet.Type == "colPercentStacked" {
+	if formatSet.Type == "colStacked" || formatSet.Type == "barStacked" || formatSet.Type == "barPercentStacked" || formatSet.Type == "colPercentStacked" || formatSet.Type == "areaPercentStacked" {
 		c.Overlap = &attrValInt{Val: 100}
 	}
 	catAx := f.drawPlotAreaCatAx(formatSet)
 	valAx := f.drawPlotAreaValAx(formatSet)
 	charts := map[string]*cPlotArea{
+		"area": {
+			AreaChart: &c,
+			CatAx:     catAx,
+			ValAx:     valAx,
+		},
+		"areaStacked": {
+			AreaChart: &c,
+			CatAx:     catAx,
+			ValAx:     valAx,
+		},
+		"areaPercentStacked": {
+			AreaChart: &c,
+			CatAx:     catAx,
+			ValAx:     valAx,
+		},
+		"area3D": {
+			Area3DChart: &c,
+			CatAx:       catAx,
+			ValAx:       valAx,
+		},
+		"area3DStacked": {
+			Area3DChart: &c,
+			CatAx:       catAx,
+			ValAx:       valAx,
+		},
+		"area3DPercentStacked": {
+			Area3DChart: &c,
+			CatAx:       catAx,
+			ValAx:       valAx,
+		},
 		"bar": {
 			BarChart: &c,
 			CatAx:    catAx,
@@ -826,7 +941,7 @@ func (f *File) drawChartSeriesSpPr(i int, formatSet *formatChart) *cSpPr {
 			},
 		},
 	}
-	chartSeriesSpPr := map[string]*cSpPr{Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: spPrLine, Pie: nil, Pie3D: nil, Radar: nil, Scatter: spPrScatter}
+	chartSeriesSpPr := map[string]*cSpPr{Area: nil, AreaStacked: nil, AreaPercentStacked: nil, Area3D: nil, Area3DStacked: nil, Area3DPercentStacked: nil, Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: spPrLine, Pie: nil, Pie3D: nil, Radar: nil, Scatter: spPrScatter}
 	return chartSeriesSpPr[formatSet.Type]
 }
 
@@ -855,7 +970,7 @@ func (f *File) drawChartSeriesDPt(i int, formatSet *formatChart) []*cDPt {
 			},
 		},
 	}}
-	chartSeriesDPt := map[string][]*cDPt{Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: dpt, Pie3D: dpt, Radar: nil, Scatter: nil}
+	chartSeriesDPt := map[string][]*cDPt{Area: nil, AreaStacked: nil, AreaPercentStacked: nil, Area3D: nil, Area3DStacked: nil, Area3DPercentStacked: nil, Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: dpt, Pie3D: dpt, Radar: nil, Scatter: nil}
 	return chartSeriesDPt[formatSet.Type]
 }
 
@@ -867,7 +982,7 @@ func (f *File) drawChartSeriesCat(v formatChartSeries, formatSet *formatChart) *
 			F: v.Categories,
 		},
 	}
-	chartSeriesCat := map[string]*cCat{Bar: cat, BarStacked: cat, BarPercentStacked: cat, Bar3DClustered: cat, Bar3DStacked: cat, Bar3DPercentStacked: cat, Col: cat, ColStacked: cat, ColPercentStacked: cat, Col3DClustered: cat, Col3D: cat, Col3DStacked: cat, Col3DPercentStacked: cat, Doughnut: cat, Line: cat, Pie: cat, Pie3D: cat, Radar: cat, Scatter: nil}
+	chartSeriesCat := map[string]*cCat{Area: cat, AreaStacked: cat, AreaPercentStacked: cat, Area3D: cat, Area3DStacked: cat, Area3DPercentStacked: cat, Bar: cat, BarStacked: cat, BarPercentStacked: cat, Bar3DClustered: cat, Bar3DStacked: cat, Bar3DPercentStacked: cat, Col: cat, ColStacked: cat, ColPercentStacked: cat, Col3DClustered: cat, Col3D: cat, Col3DStacked: cat, Col3DPercentStacked: cat, Doughnut: cat, Line: cat, Pie: cat, Pie3D: cat, Radar: cat, Scatter: nil}
 	return chartSeriesCat[formatSet.Type]
 }
 
@@ -879,7 +994,7 @@ func (f *File) drawChartSeriesVal(v formatChartSeries, formatSet *formatChart) *
 			F: v.Values,
 		},
 	}
-	chartSeriesVal := map[string]*cVal{Bar: val, BarStacked: val, BarPercentStacked: val, Bar3DClustered: val, Bar3DStacked: val, Bar3DPercentStacked: val, Col: val, ColStacked: val, ColPercentStacked: val, Col3DClustered: val, Col3D: val, Col3DStacked: val, Col3DPercentStacked: val, Doughnut: val, Line: val, Pie: val, Pie3D: val, Radar: val, Scatter: nil}
+	chartSeriesVal := map[string]*cVal{Area: val, AreaStacked: val, AreaPercentStacked: val, Area3D: val, Area3DStacked: val, Area3DPercentStacked: val, Bar: val, BarStacked: val, BarPercentStacked: val, Bar3DClustered: val, Bar3DStacked: val, Bar3DPercentStacked: val, Col: val, ColStacked: val, ColPercentStacked: val, Col3DClustered: val, Col3D: val, Col3DStacked: val, Col3DPercentStacked: val, Doughnut: val, Line: val, Pie: val, Pie3D: val, Radar: val, Scatter: nil}
 	return chartSeriesVal[formatSet.Type]
 }
 
@@ -905,7 +1020,7 @@ func (f *File) drawChartSeriesMarker(i int, formatSet *formatChart) *cMarker {
 			},
 		},
 	}
-	chartSeriesMarker := map[string]*cMarker{Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: nil, Pie3D: nil, Radar: nil, Scatter: marker}
+	chartSeriesMarker := map[string]*cMarker{Area: nil, AreaStacked: nil, AreaPercentStacked: nil, Area3D: nil, Area3DStacked: nil, Area3DPercentStacked: nil, Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: nil, Pie3D: nil, Radar: nil, Scatter: marker}
 	return chartSeriesMarker[formatSet.Type]
 }
 
@@ -917,7 +1032,7 @@ func (f *File) drawChartSeriesXVal(v formatChartSeries, formatSet *formatChart)
 			F: v.Categories,
 		},
 	}
-	chartSeriesXVal := map[string]*cCat{Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: nil, Pie3D: nil, Radar: nil, Scatter: cat}
+	chartSeriesXVal := map[string]*cCat{Area: nil, AreaStacked: nil, AreaPercentStacked: nil, Area3D: nil, Area3DStacked: nil, Area3DPercentStacked: nil, Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: nil, Pie3D: nil, Radar: nil, Scatter: cat}
 	return chartSeriesXVal[formatSet.Type]
 }
 
@@ -929,7 +1044,7 @@ func (f *File) drawChartSeriesYVal(v formatChartSeries, formatSet *formatChart)
 			F: v.Values,
 		},
 	}
-	chartSeriesYVal := map[string]*cVal{Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: nil, Pie3D: nil, Radar: nil, Scatter: val}
+	chartSeriesYVal := map[string]*cVal{Area: nil, AreaStacked: nil, AreaPercentStacked: nil, Area3D: nil, Area3DStacked: nil, Area3DPercentStacked: nil, Bar: nil, BarStacked: nil, BarPercentStacked: nil, Bar3DClustered: nil, Bar3DStacked: nil, Bar3DPercentStacked: nil, Col: nil, ColStacked: nil, ColPercentStacked: nil, Col3DClustered: nil, Col3D: nil, Col3DStacked: nil, Col3DPercentStacked: nil, Doughnut: nil, Line: nil, Pie: nil, Pie3D: nil, Radar: nil, Scatter: val}
 	return chartSeriesYVal[formatSet.Type]
 }
 
@@ -951,7 +1066,7 @@ func (f *File) drawChartDLbls(formatSet *formatChart) *cDLbls {
 // given format sets.
 func (f *File) drawChartSeriesDLbls(formatSet *formatChart) *cDLbls {
 	dLbls := f.drawChartDLbls(formatSet)
-	chartSeriesDLbls := map[string]*cDLbls{Bar: dLbls, BarStacked: dLbls, BarPercentStacked: dLbls, Bar3DClustered: dLbls, Bar3DStacked: dLbls, Bar3DPercentStacked: dLbls, Col: dLbls, ColStacked: dLbls, ColPercentStacked: dLbls, Col3DClustered: dLbls, Col3D: dLbls, Col3DStacked: dLbls, Col3DPercentStacked: dLbls, Doughnut: dLbls, Line: dLbls, Pie: dLbls, Pie3D: dLbls, Radar: dLbls, Scatter: nil}
+	chartSeriesDLbls := map[string]*cDLbls{Area: dLbls, AreaStacked: dLbls, AreaPercentStacked: dLbls, Area3D: dLbls, Area3DStacked: dLbls, Area3DPercentStacked: dLbls, Bar: dLbls, BarStacked: dLbls, BarPercentStacked: dLbls, Bar3DClustered: dLbls, Bar3DStacked: dLbls, Bar3DPercentStacked: dLbls, Col: dLbls, ColStacked: dLbls, ColPercentStacked: dLbls, Col3DClustered: dLbls, Col3D: dLbls, Col3DStacked: dLbls, Col3DPercentStacked: dLbls, Doughnut: dLbls, Line: dLbls, Pie: dLbls, Pie3D: dLbls, Radar: dLbls, Scatter: nil}
 	return chartSeriesDLbls[formatSet.Type]
 }
 
@@ -1025,7 +1140,7 @@ func (f *File) drawPlotAreaValAx(formatSet *formatChart) []*cAxs {
 			TxPr:          f.drawPlotAreaTxPr(),
 			CrossAx:       &attrValInt{Val: 754001152},
 			Crosses:       &attrValString{Val: "autoZero"},
-			CrossBetween:  &attrValString{Val: "between"},
+			CrossBetween:  &attrValString{Val: chartValAxCrossBetween[formatSet.Type]},
 		},
 	}
 }

excelize_test.go

@@ -959,6 +959,13 @@ func TestAddChart(t *testing.T) {
 	xlsx.AddChart("Sheet2", "X64", `{"type":"bar3DClustered","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 3D Clustered Bar Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`)
 	xlsx.AddChart("Sheet2", "P80", `{"type":"bar3DStacked","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 3D Stacked Bar Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero","y_axis":{"maximum":7.5,"minimum":0.5}}`)
 	xlsx.AddChart("Sheet2", "X80", `{"type":"bar3DPercentStacked","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 3D 100% Stacked Bar Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero","x_axis":{"reverse_order":true,"maximum":0,"minimum":0},"y_axis":{"reverse_order":true,"maximum":0,"minimum":0}}`)
+	// area series charts
+	xlsx.AddChart("Sheet2", "AF1", `{"type":"area","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 2D Area Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`)
+	xlsx.AddChart("Sheet2", "AN1", `{"type":"areaStacked","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 2D Stacked Area Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`)
+	xlsx.AddChart("Sheet2", "AF16", `{"type":"areaPercentStacked","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 2D 100% Stacked Area Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`)
+	xlsx.AddChart("Sheet2", "AN16", `{"type":"area3D","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 3D Area Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`)
+	xlsx.AddChart("Sheet2", "AF32", `{"type":"area3DStacked","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 3D Stacked Area Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`)
+	xlsx.AddChart("Sheet2", "AN32", `{"type":"area3DPercentStacked","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$A$31","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$31:$D$31"},{"name":"Sheet1!$A$32","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$32:$D$32"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Fruit 3D 100% Stacked Area Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`)
 	// Save xlsx file by the given path.
 	err = xlsx.SaveAs("./test/Book_addchart.xlsx")
 	if err != nil {

xmlChart.go

@@ -301,6 +301,8 @@ type cView3D struct {
 // plot area of the chart.
 type cPlotArea struct {
 	Layout        *string  `xml:"c:layout"`
+	AreaChart     *cCharts `xml:"c:areaChart"`
+	Area3DChart   *cCharts `xml:"c:area3DChart"`
 	BarChart      *cCharts `xml:"c:barChart"`
 	Bar3DChart    *cCharts `xml:"c:bar3DChart"`
 	DoughnutChart *cCharts `xml:"c:doughnutChart"`