累積フロー図とは

The cumulative flow diagram shows the various statuses of your project's work items over time. It's a visual indication of how many work items are passing through each column of your board. This helps you see which columns accumulate more work items than others, and identify bottlenecks in your team's workflow.

サイド パネルから累積フロー図にアクセスします。[レポート] > [累積フロー図] の順に選択します。

ダイアグラムでは、次のようなチームの主要なメトリックが視覚的に表示されます。

• Cycle time: The time a work item takes to move through the "In progress" statuses and becomes ready to deliver.

• Work in progress: This is the number of work items that are actively being worked on at any given time.

  ボードに表示される進捗中の作業を制限するには、列名にカーソルを合わせ、[ その他 ] ( ) > [列の上限を設定 ] を選択します。

• 範囲: スクラム チームの場合、図を使用すると、任意のスプリントでコミットされた作業の量を視覚化できます。

アジャイル チームに役立つ指標について詳しく知りたい場合は、アジャイルコーチのサイトをご覧ください。

レポートの読み方

The horizontal axis represents time, and the vertical axis represents work items.

図のそれぞれの着色された領域は、ボードの列に相当します。

Each dot represents one work item transition, such as a work item being created (and thus being transitioned to To do) or a work item transitioning from one status to another (eg: moving from To do to In progress).

時間の経過とともに縦に拡大している領域が図に含まれている場合、拡大している領域に相当する列は、一般的にボトルネックとなります。

例:

1. If you start a sprint with 5 work items, all work items will begin in the To Do column. If you view the diagram, it will show 5 work items To Do, 0 work items In Progress, and 0 work items Done.

2. If you then move 2 work items to In Progress, the diagram will display 5 work items To Do (because 5 have passed through that column), 2 work items In Progress, and 0 work items Done.

3. If you then move 1 work item from In Progress to Done, the diagram will show To Do = 5, In Progress = 2, and Done = 1.

4. If you then take that 1 work item out of Done and move it back to To Do, the diagram will remove the 1 from Done and remove 1 from In Progress, but the numbers in To Do will remain the same, because no new work items have arrived. Therefore, the diagram will show To Do = 5, In Progress = 1, Done = 0.

その他の注意事項

• The Cumulative flow diagram is based on your board's column mapping. A work item is considered to be 'To Do' when it's in the left-most column of your board. Similarly, a work item is 'Done' when it's in the right-most column of your board.

• The diagram displays data for the entire life of the project. If your team works in sprints, you may find it more useful to use the date filter at the top to only show work items for one sprint.

• If your project has the Backlog enabled, work items created on the backlog will show up on the diagram as a To do transition.

• Ideally, your diagram should be rising evenly, except for the band representing Done work item, which should be continuously getting taller.