甘特图目前主要用于说明项目进度表。 描述各个子任务的间进度图表。

基本用法

甘特图用 gantt 表示，语法非常简单， 如

```flow
gantt
    title 项目进度时间规划图
    dateFormat  YYYY-MM-DD
    section 开发
    需求分析           : a1, 2014-01-01, 30d
    原型开发           : after a1, 20d
    section 测试
    测试计划           : 2014-01-12, 12d
    测试用例           : 24d
```

效果如下：

完整语法

可用:done, :active, :crit 描述项目状态。

```flow
gantt
       dateFormat  YYYY-MM-DD
       title Adding GANTT diagram functionality to mermaid

       section A section
       Completed task            :done,    des1, 2014-01-06,2014-01-08
       Active task               :active,  des2, 2014-01-09, 3d
       Future task               :         des3, after des2, 5d
       Future task2              :         des4, after des3, 5d

       section Critical tasks
       Completed task in the critical line :crit, done, 2014-01-06,24h
       Implement parser and jison          :crit, done, after des1, 2d
       Create tests for parser             :crit, active, 3d
       Future task in critical line        :crit, 5d
       Create tests for renderer           :2d
       Add to mermaid                      :1d

       section Documentation
       Describe gantt syntax               :active, a1, after des1, 3d
       Add gantt diagram to demo page      :after a1  , 20h
       Add another diagram to demo page    :doc1, after a1  , 48h

       section Last section
       Describe gantt syntax               :after doc1, 3d
       Add gantt diagram to demo page      :20h
       Add another diagram to demo page    :48h
```

效果如下：