pyecharts矩形树图显示数值

要在 pyecharts 的矩形树图中显示数值，可以使用 `Tooltip` 组件。具体步骤如下：

1. 导入 `Tooltip` 组件：

from pyecharts import options as opts
from pyecharts.charts import Treemap
from pyecharts.commons.utils import JsCode

2. 设置数据并绘制矩形树图：

data = [
    {"value": 40, "name": "1.1"},
    {"value": 20, "name": "1.2"},
    {"value": 20, "name": "1.3"},
    {"value": 10, "name": "1.4"},
    {"value": 10, "name": "1.5"},
    {"value": 20, "name": "2.1"},
    {"value": 10, "name": "2.2"},
    {"value": 10, "name": "2.3"},
    {"value": 10, "name": "2.4"},
    {"value": 10, "name": "2.5"}
]

treemap = (
    Treemap()
    .add("",
         data,
         visual_min=0,
         visual_max=50,
         levels=[
             {"itemStyle": {"normal": {"borderColor": "#777", "borderWidth": 0, "gapWidth": 1}}, "upperLabel": {"show": False}, "label": {"show": False}},
             {"itemStyle": {"normal": {"borderColor": "#555", "borderWidth": 5, "gapWidth": 1}}, "label": {"formatter": "function (params) {return params.name + ' (' + params.value + ')';}"}}
         ]
    )
    .set_global_opts(title_opts=opts.TitleOpts(title="矩形树图-显示数值"))
)

在 `add` 方法中，需要设置 `visual_min` 和 `visual_max` 参数，用来指定数据的最小值和最大值。同时，在 `levels` 参数中，需要设置第二层的标签的 `formatter` 属性，用来格式化显示数值。

3. 设置 Tooltip 组件并渲染图表：

treemap.set_series_opts(tooltip_opts=opts.TooltipOpts(
        formatter=JsCode(
            "function (params) {"
            "return params.treePathInfo[1].name + ' (' + params.value + ')';"
            "}"
        )
    ))
treemap.render("treemap.html")

在 `set_series_opts` 方法中，设置 `tooltip_opts` 参数，并设置 `formatter` 属性，用来显示当前节点的名称和数值。

完整的代码如下：

from pyecharts import options as opts
from pyecharts.charts import Treemap
from pyecharts.commons.utils import JsCode

data = [
    {"value": 40, "name": "1.1"},
    {"value": 20, "name": "1.2"},
    {"value": 20, "name": "1.3"},
    {"value": 10, "name": "1.4"},
    {"value": 10, "name": "1.5"},
    {"value": 20, "name": "2.1"},
    {"value": 10, "name": "2.2"},
    {"value": 10, "name": "2.3"},
    {"value": 10, "name": "2.4"},
    {"value": 10, "name": "2.5"}
]

treemap = (
    Treemap()
    .add("",
         data,
         visual_min=0,
         visual_max=50,
         levels=[
             {"itemStyle": {"normal": {"borderColor": "#777", "borderWidth": 0, "gapWidth": 1}}, "upperLabel": {"show": False}, "label": {"show": False}},
             {"itemStyle": {"normal": {"borderColor": "#555", "borderWidth": 5, "gapWidth": 1}}, "label": {"formatter": "function (params) {return params.name + ' (' + params.value + ')';}"}}
         ]
    )
    .set_global_opts(title_opts=opts.TitleOpts(title="矩形树图-显示数值"))
)

treemap.set_series_opts(tooltip_opts=opts.TooltipOpts(
        formatter=JsCode(
            "function (params) {"
            "return params.treePathInfo[1].name + ' (' + params.value + ')';"
            "}"
        )
    ))

treemap.render("treemap.html")