# 图表

通过 `Vtiful\Kernel\Chart` 构造图表对象，调用 `series()` / `categories()` 注入数据后插入工作表。

> 请先把 `Chart` 实例赋值给变量，再调用工作簿的 `output()`。如果直接链式调用 `(new Chart())->series()->toResource()`，会触发重复插入告警。

本节内容：

* [图表类型常量](/zhong-wen-jian-ti/chart/chart-type-constants.md)
* [填充数据](/zhong-wen-jian-ti/chart/data-input.md)
* 示例：[圆环图](/zhong-wen-jian-ti/chart/doughnut.md)、[面积图](/zhong-wen-jian-ti/chart/area.md)、[直方图](/zhong-wen-jian-ti/chart/histogram.md)、[条形图](/zhong-wen-jian-ti/chart/bar.md)


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