class TreeItem(
# 树节点的名称,用来标识每一个节点。
name: Optional[str] = None,
# 节点的值,在 tooltip 中显示。
value: Optional[Numeric] = None,
# 该节点的样式
label_opts: Optional[LabelOpts] = None,
# 子节点,嵌套定义。
children: Optional[Sequence] = None,
)
最简单的的树形图:
"children": [{"name":"B"},{"name":"C"}], "name":"A",
from pyecharts import options as opts
from pyecharts.charts import Tree
data = [
{
"children": [
{
"name": "B"},
{
"children": [{
"children": [{
"name": "I"}], "name": "E"}, {
"name": "F"}],
"name": "C",
},
{
"children": [
{
"children": [{
"name": "J"}, {
"name": "K"}], "name": "G"},
{
"name": "H"},
],
"name": "D",
},
],
"name": "A",
}
]
c = (
Tree()
.add("", data)
.set_global_opts(title_opts=opts.TitleOpts(title="Tree-基本示例"))
.render("tree_base.html")
)
用到的文件:https://echarts.apache.org/examples/data/asset/data/flare.json
orient="BT"
只有在 layout = ‘orthogonal’ 的时候,该配置项才生效(这个是默认正交布局)。
从下到上。取值分别为 LR (从左到右),RL(从右到左), TB(垂直方向的从上到下), BT(垂直方向的从下到上)
之前的配置项值 ‘horizontal’ 等同于 ‘LR’, ‘vertical’ 等同于 ‘TB’。
collapse_interval=1
折叠节点间隔,当节点过多时可以解决节点显示过杂间隔
import json
from pyecharts import options as opts
from pyecharts.charts import Tree
with open("flare.json", "r", encoding="utf-8") as f:
j = json.load(f)
c = (
Tree()
.add(
"",
[j],
collapse_interval=1, #折叠节点间隔
orient="BT", # 从下到上。取值分别为 'LR' , 'RL', 'TB', 'BT'。注意,
label_opts=opts.LabelOpts(
position="top",
horizontal_align="right",
vertical_align="middle",
rotate=-90, #文字方向
),
)
.set_global_opts(title_opts=opts.TitleOpts(title="Tree-下上方向"))
.render("tree_bottom_top.html")
)
layout="radial"
import pyecharts.options as opts
from pyecharts.charts import Tree
with open("flare.json", "r", encoding="utf-8") as f:
data = json.load(f)
(
Tree(init_opts=opts.InitOpts(width="1400px", height="800px"))
.add(
series_name="",
data=[data],
collapse_interval=3,
pos_top="18%",
pos_bottom="14%",
layout="radial",
symbol="emptyCircle",
symbol_size=7,
)
.set_global_opts(
tooltip_opts=opts.TooltipOpts(trigger="item", trigger_on="mousemove")
)
.render("radial_tree.html")
)
还有矩阵树图,但我觉得有点太偏门了,所以就没有整理。
上一节:饼图
https://blog.csdn.net/vv_eve/article/details/107991704