# 径向树图
径向树图是一种用节点来表达当前节点和子节点关系的图形。
# 属性
# 基础
- 基本属性： 同组件管理 -> 属性 -> 基本属性
- 系列颜色： 改变不同系列的颜色。
# 系列
树图布局： 树图的布局，有正交和径向两种。
- 正交布局： 水平和垂直方向。
- 径向布局： 指以节点为圆心，每一层节点为环，一层层向外发散绘制而成的布局，径向树图默认此选项。
子树折叠展开： 子树折叠和展开的交互，默认打开。由于绘图区域是有限的，而通常一个树图的节点可能会比较多，这样就会出现节点之间相互遮盖的问题。为了避免这一问题，可以将暂时无关的子树折叠收起，等到需要时再将其展开。如上面径向布局树图示例，节点中心用蓝色填充的就是折叠收起的子树，可以点击将其展开。
初始展开层级： 树图初始展开的层级（深度）。
平移缩放： 其余见树图系列
# 视觉映射
# 标题
# 图例
# 提示框
# 工具栏
# 数据
# 静态数据
上图中的部分示例JSON代码如下：
[
{
"source": 0,
"target": 1,
"name": "根节点",
"value": 87
},
{
"source": 1,
"target": 2,
"name": "节点1",
"value": 2
},
{
"source": 2,
"target": 3,
"name": "节点1-1",
"value": 74
},
{
"source": 2,
"target": 4,
"name": "节点1-2",
"value": 80
},
{
"source": 2,
"target": 5,
"name": "节点1-3",
"value": 85
},
{
"source": 2,
"target": 6,
"name": "节点1-4",
"value": 54
},
{
"source": 2,
"target": 7,
"name": "节点1-5",
"value": 24
},
{
"source": 1,
"target": 8,
"name": "节点2",
"value": 39
},
{
"source": 8,
"target": 9,
"name": "节点2-1",
"value": 45
},
{
"source": 8,
"target": 10,
"name": "节点2-2",
"value": 97
},
{
"source": 8,
"target": 11,
"name": "节点2-3",
"value": 18
},
{
"source": 8,
"target": 12,
"name": "节点2-4",
"value": 6
},
{
"source": 8,
"target": 13,
"name": "节点2-5",
"value": 61
},
{
"source": 1,
"target": 14,
"name": "节点3",
"value": 93
},
{
"source": 14,
"target": 15,
"name": "节点3-1",
"value": 69
},
{
"source": 14,
"target": 16,
"name": "节点3-2",
"value": 65
},
{
"source": 14,
"target": 17,
"name": "节点3-3",
"value": 14
},
{
"source": 14,
"target": 18,
"name": "节点3-4",
"value": 55
},
{
"source": 14,
"target": 19,
"name": "节点3-5",
"value": 57
},
{
"source": 1,
"target": 20,
"name": "节点4",
"value": 2
},
{
"source": 20,
"target": 21,
"name": "节点4-1",
"value": 67
},
{
"source": 20,
"target": 22,
"name": "节点4-2",
"value": 53
},
{
"source": 20,
"target": 23,
"name": "节点4-3",
"value": 26
},
{
"source": 20,
"target": 24,
"name": "节点4-4",
"value": 68
},
{
"source": 20,
"target": 25,
"name": "节点4-5",
"value": 80
},
{
"source": 1,
"target": 26,
"name": "节点5",
"value": 51
},
{
"source": 26,
"target": 27,
"name": "节点5-1",
"value": 93
},
{
"source": 26,
"target": 28,
"name": "节点5-2",
"value": 57
},
{
"source": 26,
"target": 29,
"name": "节点5-3",
"value": 53
},
{
"source": 26,
"target": 30,
"name": "节点5-4",
"value": 40
},
{
"source": 26,
"target": 31,
"name": "节点5-5",
"value": 89
},
{
"source": 1,
"target": 32,
"name": "节点6",
"value": 29
},
{
"source": 32,
"target": 33,
"name": "节点6-1",
"value": 39
},
{
"source": 32,
"target": 34,
"name": "节点6-2",
"value": 21
},
{
"source": 32,
"target": 35,
"name": "节点6-3",
"value": 57
},
{
"source": 32,
"target": 36,
"name": "节点6-4",
"value": 7
},
{
"source": 32,
"target": 37,
"name": "节点6-5",
"value": 53
},
{
"source": 1,
"target": 38,
"name": "节点7",
"value": 18
},
{
"source": 38,
"target": 39,
"name": "节点7-1",
"value": 43
},
{
"source": 38,
"target": 40,
"name": "节点7-2",
"value": 64
},
{
"source": 38,
"target": 41,
"name": "节点7-3",
"value": 34
},
{
"source": 38,
"target": 42,
"name": "节点7-4",
"value": 33
},
{
"source": 38,
"target": 43,
"name": "节点7-5",
"value": 83
},
{
"source": 1,
"target": 44,
"name": "节点8",
"value": 12
},
{
"source": 44,
"target": 45,
"name": "节点8-1",
"value": 89
},
{
"source": 44,
"target": 46,
"name": "节点8-2",
"value": 8
},
{
"source": 44,
"target": 47,
"name": "节点8-3",
"value": 52
},
{
"source": 44,
"target": 48,
"name": "节点8-4",
"value": 59
},
{
"source": 44,
"target": 49,
"name": "节点8-5",
"value": 96
}
]
source: 源节点。
target: 目标节点。
name 维度，节点的名称。
value 度量，节点的大小。
提示：
根节点的源节点必须为0或者空。
# 数据资源
