AddChart support disable legend of the chart

README.md

@@ -112,7 +112,8 @@ import (
 
 func main() {
     categories := map[string]string{
-        "A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+        "A2": "Small", "A3": "Normal", "A4": "Large",
+        "B1": "Apple", "C1": "Orange", "D1": "Pear"}
     values := map[string]int{
         "B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
     f := excelize.NewFile()

README_zh.md

@@ -112,7 +112,8 @@ import (
 
 func main() {
     categories := map[string]string{
-        "A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+        "A2": "Small", "A3": "Normal", "A4": "Large",
+        "B1": "Apple", "C1": "Orange", "D1": "Pear"}
     values := map[string]int{
         "B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
     f := excelize.NewFile()

chart.go

@@ -514,8 +514,11 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //    )
 //
 //    func main() {
-//        categories := map[string]string{"A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
-//        values := map[string]int{"B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
+//        categories := map[string]string{
+//            "A2": "Small", "A3": "Normal", "A4": "Large",
+//            "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+//        values := map[string]int{
+//            "B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
 //        f := excelize.NewFile()
 //        for k, v := range categories {
 //            f.SetCellValue("Sheet1", k, v)
@@ -523,7 +526,54 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //        for k, v := range values {
 //            f.SetCellValue("Sheet1", k, v)
 //        }
-//        if err := f.AddChart("Sheet1", "E1", `{"type":"col3DClustered","series":[{"name":"Sheet1!$A$2","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$2:$D$2"},{"name":"Sheet1!$A$3","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$3:$D$3"},{"name":"Sheet1!$A$4","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$4:$D$4"}],"title":{"name":"Fruit 3D Clustered Column Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero","x_axis":{"reverse_order":true},"y_axis":{"maximum":7.5,"minimum":0.5}}`); err != nil {
+//        if err := f.AddChart("Sheet1", "E1", `{
+//            "type": "col3DClustered",
+//            "series": [
+//            {
+//                "name": "Sheet1!$A$2",
+//                "categories": "Sheet1!$B$1:$D$1",
+//                "values": "Sheet1!$B$2:$D$2"
+//            },
+//            {
+//                "name": "Sheet1!$A$3",
+//                "categories": "Sheet1!$B$1:$D$1",
+//                "values": "Sheet1!$B$3:$D$3"
+//            },
+//            {
+//                "name": "Sheet1!$A$4",
+//                "categories": "Sheet1!$B$1:$D$1",
+//                "values": "Sheet1!$B$4:$D$4"
+//            }],
+//            "title":
+//            {
+//                "name": "Fruit 3D Clustered Column Chart"
+//            },
+//            "legend":
+//            {
+//                "none": false,
+//                "position": "bottom",
+//                "show_legend_key": false
+//            },
+//            "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
+//            },
+//            "y_axis":
+//            {
+//                "maximum": 7.5,
+//                "minimum": 0.5
+//            }
+//        }`); err != nil {
 //            fmt.Println(err)
 //            return
 //        }
@@ -627,10 +677,13 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // Set properties of the chart legend. The options that can be set are:
 //
+//    none
 //    position
 //    show_legend_key
 //
-// position: Set the position of the chart legend. The default legend position is right. The available positions are:
+// none: Specified if show the legend without overlapping the chart. The default value is 'false'.
+//
+// position: Set the position of the chart legend. The default legend position is right. This parameter only takes effect when 'none' is false. The available positions are:
 //
 //    top
 //    bottom
@@ -728,8 +781,11 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //    )
 //
 //    func main() {
-//        categories := map[string]string{"A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
-//        values := map[string]int{"B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
+//        categories := map[string]string{
+//            "A2": "Small", "A3": "Normal", "A4": "Large",
+//            "B1": "Apple", "C1": "Orange", "D1": "Pear"}
+//        values := map[string]int{
+//            "B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
 //        f := excelize.NewFile()
 //        for k, v := range categories {
 //            f.SetCellValue("Sheet1", k, v)
@@ -737,7 +793,85 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //        for k, v := range values {
 //            f.SetCellValue("Sheet1", k, v)
 //        }
-//        if err := f.AddChart("Sheet1", "E1", `{"type":"col","series":[{"name":"Sheet1!$A$2","categories":"","values":"Sheet1!$B$2:$D$2"},{"name":"Sheet1!$A$3","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$3:$D$3"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Clustered Column - Line Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true}}`, `{"type":"line","series":[{"name":"Sheet1!$A$4","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$4:$D$4","marker":{"symbol":"none","size":10}}],"format":{"x_scale":1,"y_scale":1,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true}}`); err != nil {
+//        if err := f.AddChart("Sheet1", "E1", `{
+//            "type": "col",
+//            "series": [
+//            {
+//                "name": "Sheet1!$A$2",
+//                "categories": "",
+//                "values": "Sheet1!$B$2:$D$2"
+//            },
+//            {
+//                "name": "Sheet1!$A$3",
+//                "categories": "Sheet1!$B$1:$D$1",
+//                "values": "Sheet1!$B$3:$D$3"
+//            }],
+//            "format":
+//            {
+//                "x_scale": 1.0,
+//                "y_scale": 1.0,
+//                "x_offset": 15,
+//                "y_offset": 10,
+//                "print_obj": true,
+//                "lock_aspect_ratio": false,
+//                "locked": false
+//            },
+//            "title":
+//            {
+//                "name": "Clustered Column - Line Chart"
+//            },
+//            "legend":
+//            {
+//                "position": "left",
+//                "show_legend_key": false
+//            },
+//            "plotarea":
+//            {
+//                "show_bubble_size": true,
+//                "show_cat_name": false,
+//                "show_leader_lines": false,
+//                "show_percent": true,
+//                "show_series_name": true,
+//                "show_val": true
+//            }
+//        }`, `{
+//            "type": "line",
+//            "series": [
+//            {
+//                "name": "Sheet1!$A$4",
+//                "categories": "Sheet1!$B$1:$D$1",
+//                "values": "Sheet1!$B$4:$D$4",
+//                "marker":
+//                {
+//                    "symbol": "none",
+//                    "size": 10
+//                }
+//            }],
+//            "format":
+//            {
+//                "x_scale": 1,
+//                "y_scale": 1,
+//                "x_offset": 15,
+//                "y_offset": 10,
+//                "print_obj": true,
+//                "lock_aspect_ratio": false,
+//                "locked": false
+//            },
+//            "legend":
+//            {
+//                "position": "right",
+//                "show_legend_key": false
+//            },
+//            "plotarea":
+//            {
+//                "show_bubble_size": true,
+//                "show_cat_name": false,
+//                "show_leader_lines": false,
+//                "show_percent": true,
+//                "show_series_name": true,
+//                "show_val": true
+//            }
+//        }`); err != nil {
 //            fmt.Println(err)
 //            return
 //        }

chart_test.go

@@ -116,7 +116,7 @@ func TestAddChart(t *testing.T) {
 	// Test add chart on not exists worksheet.
 	assert.EqualError(t, f.AddChart("SheetN", "P1", "{}"), "sheet SheetN is not exist")
 
-	assert.NoError(t, f.AddChart("Sheet1", "P1", `{"type":"col","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$32"},{"name":"Sheet1!$A$33","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$33:$D$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"2D Column Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`))
+	assert.NoError(t, f.AddChart("Sheet1", "P1", `{"type":"col","series":[{"name":"Sheet1!$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$32"},{"name":"Sheet1!$A$33","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$33:$D$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"none":true,"show_legend_key":true},"title":{"name":"2D Column Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`))
 	assert.NoError(t, f.AddChart("Sheet1", "X1", `{"type":"colStacked","series":[{"name":"Sheet1!$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$32"},{"name":"Sheet1!$A$33","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$33:$D$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"2D Stacked Column Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`))
 	assert.NoError(t, f.AddChart("Sheet1", "P16", `{"type":"colPercentStacked","series":[{"name":"Sheet1!$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$32"},{"name":"Sheet1!$A$33","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$33:$D$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"100% Stacked Column Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`))
 	assert.NoError(t, f.AddChart("Sheet1", "X16", `{"type":"col3DClustered","series":[{"name":"Sheet1!$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$32"},{"name":"Sheet1!$A$33","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$33:$D$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"bottom","show_legend_key":false},"title":{"name":"3D Clustered Column Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`))
@@ -179,14 +179,14 @@ func TestAddChart(t *testing.T) {
 	assert.NoError(t, f.AddChart("Sheet2", "BD64", `{"type":"barOfPie","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$A$30:$D$37","values":"Sheet1!$B$30:$B$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"Bar of Pie Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero","x_axis":{"major_grid_lines":true},"y_axis":{"major_grid_lines":true}}`))
 	// combo chart
 	f.NewSheet("Combo Charts")
-	clusteredColumnCombo := map[string][]string{
-		"A1": {"line", "Clustered Column - Line Chart"},
-		"I1": {"bubble", "Clustered Column - Bubble Chart"},
-		"Q1": {"bubble3D", "Clustered Column - Bubble 3D Chart"},
-		"Y1": {"doughnut", "Clustered Column - Doughnut Chart"},
+	clusteredColumnCombo := [][]string{
+		{"A1", "line", "Clustered Column - Line Chart"},
+		{"I1", "bubble", "Clustered Column - Bubble Chart"},
+		{"Q1", "bubble3D", "Clustered Column - Bubble 3D Chart"},
+		{"Y1", "doughnut", "Clustered Column - Doughnut Chart"},
 	}
-	for axis, props := range clusteredColumnCombo {
-		assert.NoError(t, f.AddChart("Combo Charts", axis, fmt.Sprintf(`{"type":"col","series":[{"name":"Sheet1!$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$32"},{"name":"Sheet1!$A$33","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$33:$D$33"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"%s"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true}}`, props[1]), fmt.Sprintf(`{"type":"%s","series":[{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true}}`, props[0])))
+	for _, props := range clusteredColumnCombo {
+		assert.NoError(t, f.AddChart("Combo Charts", props[0], fmt.Sprintf(`{"type":"col","series":[{"name":"Sheet1!$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$32"},{"name":"Sheet1!$A$33","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$33:$D$33"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"%s"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true}}`, props[2]), fmt.Sprintf(`{"type":"%s","series":[{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"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},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true}}`, props[1])))
 	}
 	stackedAreaCombo := map[string][]string{
 		"A16": {"line", "Stacked Area - Line Chart"},

drawing.go

@@ -236,6 +236,9 @@ func (f *File) addChart(formatSet *formatChart, comboCharts []*formatChart) {
 		Bubble:                      f.drawBaseChart,
 		Bubble3D:                    f.drawBaseChart,
 	}
+	if formatSet.Legend.None {
+		xlsxChartSpace.Chart.Legend = nil
+	}
 	addChart := func(c, p *cPlotArea) {
 		immutable, mutable := reflect.ValueOf(c).Elem(), reflect.ValueOf(p).Elem()
 		for i := 0; i < mutable.NumField(); i++ {