{"id":1393,"date":"2026-07-27T03:20:18","date_gmt":"2026-07-27T03:20:18","guid":{"rendered":"https:\/\/www.vpascode.com\/tw\/docs\/uncategorized\/echarts-playbook\/tree-chart-hierarchical-data-and-structural-relationships\/"},"modified":"2026-07-29T08:53:53","modified_gmt":"2026-07-29T08:53:53","slug":"tree-chart-hierarchical-data-and-structural-relationships-guide","status":"publish","type":"ld_docs","link":"https:\/\/www.vpascode.com\/tw\/docs\/vpascode-docs\/echarts-playbook\/tree-chart-hierarchical-data-and-structural-relationships-guide\/","title":{"rendered":"Tree Chart: Hierarchical Data and Structural Relationships"},"content":{"rendered":"<p>When presenting structured data with clear parent-child relationships\u2014such as organizational charts, file system directories, decision trees, or taxonomy classifications\u2014the <strong>Tree Chart<\/strong> provides an intuitive visual framework. By arranging data nodes along branching paths, tree charts allow users to explore nested hierarchies and trace connections from a central root node down through sub-branches.<\/p>\n<h2>The Mechanics of Tree Charts<\/h2>\n<p>In Apache ECharts, tree charts use <code>type: 'tree'<\/code>. Unlike standard charts with explicit X and Y axes, tree charts construct layout positions automatically from a nested JavaScript object containing a <code>name<\/code> and an optional <code>children<\/code> array.<\/p>\n<h3>1. Essential Setup<\/h3>\n<p>To construct a basic tree chart, define your nested data structure and set <code>type: 'tree'<\/code> inside the series array:<\/p>\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">ECharts<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/#echarts: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit ECharts in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-echarts\"><code data-language=\"echarts\" class=\"language-echarts\">option = {\r\n    tooltip: {\r\n        trigger: 'item',\r\n        triggerOn: 'mousemove'\r\n    },\r\n    series: [\r\n        {\r\n            type: 'tree',\r\n            data: [{\r\n                name: 'CEO',\r\n                children: [\r\n                    {\r\n                        name: 'VP of Product',\r\n                        children: [\r\n                            { name: 'Product Manager' },\r\n                            { name: 'UX Designer' }\r\n                        ]\r\n                    },\r\n                    {\r\n                        name: 'VP of Engineering',\r\n                        children: [\r\n                            { name: 'Tech Lead' },\r\n                            { name: 'DevOps Engineer' }\r\n                        ]\r\n                    }\r\n                ]\r\n            }],\r\n            top: '5%',\r\n            left: '15%',\r\n            bottom: '5%',\r\n            right: '20%',\r\n            symbolSize: 10,\r\n            label: {\r\n                position: 'left',\r\n                verticalAlign: 'middle',\r\n                align: 'right',\r\n                fontSize: 12\r\n            },\r\n            leaves: {\r\n                label: {\r\n                    position: 'right',\r\n                    verticalAlign: 'middle',\r\n                    align: 'left'\r\n                }\r\n            },\r\n            expandAndCollapse: true,\r\n            animationDurationUpdate: 750\r\n        }\r\n    ]\r\n};<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/#echarts: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit ECharts in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<p id=\"ZnJrmRC\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1794\" height=\"965\" class=\"alignnone size-full wp-image-1394 \" src=\"https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cea84c9c2.png\" alt=\"\" srcset=\"https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cea84c9c2.png 1794w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cea84c9c2-300x161.png 300w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cea84c9c2-1024x551.png 1024w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cea84c9c2-768x413.png 768w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cea84c9c2-1536x826.png 1536w\" sizes=\"(max-width: 1794px) 100vw, 1794px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2>Advanced Layout Orientations<\/h2>\n<p>Tree charts can adapt to different space constraints and design requirements by changing their layout direction or switching to a radial display.<\/p>\n<h3>1. Radial Tree Layout<\/h3>\n<p>Set <code>layout: 'radial'<\/code> to project branches outward from a center point, ideal for wide hierarchies with many leaf nodes:<\/p>\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">ECharts<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/#echarts:eNrFVE1rg0AQvRf6H\/ZSvPRQTUqLpYdo7oV+nEoOm7iNC+6OrGPBBv97Z20+7KoklkDnsjjvzdudhzzIUYJmj2xzecGoECBDmYe776Zn5HotTMg8iUJ51x3kSROmoCyEgk\/h\/eD1llcII0URsvfDWEu7UalyQQJohGiL28p4BSUSaHgieebCCUdOyo6eLc2V1XwGQHfI1iqVWWKE\/vWsdm362y3pyHC9StmsT\/7ka\/bX7VRnvrd37jg5GEOeEHmYu+iHhuRP9ic6rz\/RGH+i4F9Wjs+7cjxm5XjMLxFPxpCnfzKz23aY9cJ5AQLFj+ffX7k2LgERlMWmHYyCKMX+sUx8DCBFpZaQvcgv2s8PHFBqiRQ5r5RKc5FjGjKXwbVU3MbnvDTN+ZZTIJHW3e3Ngbl1gLauH74BFRcEBQ==\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit ECharts in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-echarts\"><code data-language=\"echarts\" class=\"language-echarts\">option = {\r\n    tooltip: {\r\n        trigger: 'item',\r\n        triggerOn: 'mousemove'\r\n    },\r\n    series: [\r\n        {\r\n            type: 'tree',\r\n            layout: 'radial',\r\n            data: [{\r\n                name: 'Root',\r\n                children: [\r\n                    {\r\n                        name: 'Branch A',\r\n                        children: [\r\n                            { name: 'A1' },\r\n                            { name: 'A2' },\r\n                            { name: 'A3' }\r\n                        ]\r\n                    },\r\n                    {\r\n                        name: 'Branch B',\r\n                        children: [\r\n                            { name: 'B1' },\r\n                            { name: 'B2' }\r\n                        ]\r\n                    },\r\n                    {\r\n                        name: 'Branch C',\r\n                        children: [\r\n                            { name: 'C1' },\r\n                            { name: 'C2' },\r\n                            { name: 'C3' },\r\n                            { name: 'C4' }\r\n                        ]\r\n                    }\r\n                ]\r\n            }],\r\n            top: '18%',\r\n            bottom: '14%',\r\n            right: '18%',\r\n            left: '18%',\r\n            symbolSize: 12,\r\n            initialTreeDepth: 2,\r\n            animationDurationUpdate: 750\r\n        }\r\n    ]\r\n};<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/#echarts:eNrFVE1rg0AQvRf6H\/ZSvPRQTUqLpYdo7oV+nEoOm7iNC+6OrGPBBv97Z20+7KoklkDnsjjvzdudhzzIUYJmj2xzecGoECBDmYe776Zn5HotTMg8iUJ51x3kSROmoCyEgk\/h\/eD1llcII0URsvfDWEu7UalyQQJohGiL28p4BSUSaHgieebCCUdOyo6eLc2V1XwGQHfI1iqVWWKE\/vWsdm362y3pyHC9StmsT\/7ka\/bX7VRnvrd37jg5GEOeEHmYu+iHhuRP9ic6rz\/RGH+i4F9Wjs+7cjxm5XjMLxFPxpCnfzKz23aY9cJ5AQLFj+ffX7k2LgERlMWmHYyCKMX+sUx8DCBFpZaQvcgv2s8PHFBqiRQ5r5RKc5FjGjKXwbVU3MbnvDTN+ZZTIJHW3e3Ngbl1gLauH74BFRcEBQ==\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit ECharts in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<p id=\"EFQEBNb\"><img decoding=\"async\" width=\"1164\" height=\"1091\" class=\"alignnone size-full wp-image-1395 \" src=\"https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66ceb2d9ec5.png\" alt=\"\" srcset=\"https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66ceb2d9ec5.png 1164w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66ceb2d9ec5-300x281.png 300w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66ceb2d9ec5-1024x960.png 1024w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66ceb2d9ec5-768x720.png 768w\" sizes=\"(max-width: 1164px) 100vw, 1164px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2>Fine-Tuning Layout and Styling<\/h2>\n<p>Customizing node symbols, line curves, and level-specific formatting helps highlight key structural tiers across large diagrams.<\/p>\n<h3>1. Curved Connectors and Level-Based Node Styling<\/h3>\n<p>Use <code>lineStyle.curveness<\/code> to smooth connection lines, and define <code>levels<\/code> array configs to style nodes according to their depth in the hierarchy:<\/p>\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">ECharts<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/#echarts: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit ECharts in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-echarts\"><code data-language=\"echarts\" class=\"language-echarts\">option = {\r\n    tooltip: {\r\n        trigger: 'item'\r\n    },\r\n    series: [\r\n        {\r\n            type: 'tree',\r\n            orient: 'TB', \/\/ Top to Bottom orientation\r\n            data: [{\r\n                name: 'Project Root',\r\n                children: [\r\n                    {\r\n                        name: 'Frontend',\r\n                        children: [\r\n                            { name: 'React' },\r\n                            { name: 'Vue' }\r\n                        ]\r\n                    },\r\n                    {\r\n                        name: 'Backend',\r\n                        children: [\r\n                            { name: 'Node.js' },\r\n                            { name: 'Python' }\r\n                        ]\r\n                    }\r\n                ]\r\n            }],\r\n            top: '10%',\r\n            left: '10%',\r\n            bottom: '10%',\r\n            right: '10%',\r\n            symbol: 'emptyCircle',\r\n            symbolSize: 14,\r\n            edgeShape: 'polyline', \/\/ Uses crisp rectangular connections instead of curves\r\n            initialTreeDepth: 2,\r\n            lineStyle: {\r\n                width: 2,\r\n                color: '#ccc'\r\n            },\r\n            label: {\r\n                position: 'top',\r\n                fontSize: 12\r\n            },\r\n            leaves: {\r\n                label: {\r\n                    position: 'bottom'\r\n                }\r\n            }\r\n        }\r\n    ]\r\n};<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/#echarts: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\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit ECharts in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<p id=\"pJSXtAh\"><img decoding=\"async\" width=\"1313\" height=\"1335\" class=\"alignnone size-full wp-image-1396 \" src=\"https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cebfab2b6.png\" alt=\"\" srcset=\"https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cebfab2b6.png 1313w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cebfab2b6-295x300.png 295w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cebfab2b6-1007x1024.png 1007w, https:\/\/www.vpascode.com\/tw\/wp-content\/uploads\/sites\/2\/2026\/07\/img_6a66cebfab2b6-768x781.png 768w\" sizes=\"(max-width: 1313px) 100vw, 1313px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2>Strategic Best Practices<\/h2>\n<ul>\n<li><strong>Control Initial Collapse Depth:<\/strong> Set <code>initialTreeDepth<\/code> (e.g., <code>1<\/code> or <code>2<\/code>) on large datasets to keep the chart clean on initial load while letting users click nodes to expand details.<\/li>\n<li><strong>Choose the Right Orientation:<\/strong> Use horizontal (`LR`) or radial (`radial`) layouts for deep nested structures with long label text, and vertical (`TB`) layouts for shallow, wide org structures.<\/li>\n<li><strong>Differentiate Leaf Nodes:<\/strong> Use the <code>leaves<\/code> property to style end-nodes differently from parent container nodes so users can easily distinguish branches from endpoints.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>When presenting structured data with 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