pyecharts实现选中图例显示该图例数据
时间: 2023-06-19 21:10:38 浏览: 86
在 Pyecharts 中,可以通过自定义 JavaScript 代码来实现选中图例显示该图例数据的功能。具体实现步骤如下:
1. 定义一个函数来根据图例的选择状态显示或隐藏相应的系列:
```javascript
function toggleSeries(chart, legendName) {
var seriesIndex = chart.getOption().legend[0].data.indexOf(legendName);
var series = chart.getOption().series[seriesIndex];
var isSelected = series.emphasis && series.emphasis.focus;
if (isSelected) {
chart.dispatchAction({
type: 'legendUnSelect',
name: legendName
});
} else {
chart.dispatchAction({
type: 'legendSelect',
name: legendName
});
}
}
```
2. 在 Pyecharts 中定义一个自定义 JavaScript 代码块,并调用上面定义的函数:
```python
from pyecharts.charts import Line
from pyecharts import options as opts
line = (
Line()
.add_xaxis(["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"])
.add_yaxis("A", [1, 2, 3, 4, 5, 6, 7], is_selected=True)
.add_yaxis("B", [7, 6, 5, 4, 3, 2, 1], is_selected=True)
.set_global_opts(
title_opts=opts.TitleOpts(title="Line Chart"),
legend_opts=opts.LegendOpts(
type_="scroll",
pos_left="right",
pos_top="middle",
orient="vertical",
selected_mode="multiple",
selector_label=opts.LabelOpts(font_size=12),
selector_position="right",
selector_text_gap=10,
selector_border_color="#ccc",
selector_border_width=1,
selector_padding=10,
# 定义自定义 JavaScript 代码块
js_functions=[
"""
chart.on('legendselectchanged', function(params) {
toggleSeries(chart, params.name);
});
function toggleSeries(chart, legendName) {
var seriesIndex = chart.getOption().legend[0].data.indexOf(legendName);
var series = chart.getOption().series[seriesIndex];
var isSelected = series.emphasis && series.emphasis.focus;
if (isSelected) {
chart.dispatchAction({
type: 'legendUnSelect',
name: legendName
});
} else {
chart.dispatchAction({
type: 'legendSelect',
name: legendName
});
}
}
"""
]
)
)
)
line.render()
```
3. 运行代码后,即可在图例中选择相应的项,然后该项对应的数据将被显示或隐藏。
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