> For the complete documentation index, see [llms.txt](https://growingio.gitbook.io/v3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://growingio.gitbook.io/v3/introduction/datamodel/analysismodel/metric.md).

# 指标-事件的度量

## 指标的含义

指标是指对GrowingIO采集到的事件的度量。举一个页面事件为例

`小明 使用 Chrome浏览器 在 2018年8月1日上午11点32分 浏览了 GrowingIO网站首页`

我们在度量上面的事件时就会用到如下几个指标：

`GrowingIO网站首页浏览量：1`

`GrowingIO网站首页浏览访问用户量：1`

`GrowingIO网站首页浏览登录用户量：1`

我们可以发现，一个事件会形成多个指标，这些指标都会作用于我们后续对这个事件的统计分析

## 指标的类型

根据事件类型不同，GrowingIO也将指标分为如下几类：

* 预定义指标：指由GrowingIO内置的，无需用户定义的、宏观的指标，如：访问量、页面浏览量
* 无埋点指标：通过用户在GrowingIO产品中圈选，选择的页面或元素产生的指标，如：注册按钮的点击量
* 埋点指标：通过用户发送埋点事件产生的指标，如：订单金额


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