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Cumulative Flow Diagram (CFD) sample report

  • Artikkeli

Azure DevOps Services | Azure DevOps Server 2022 - Azure DevOps Server 2019

This article shows you how to display the Stories CFD for a specified team. This data is also available through the built-in chart and dashboard widget. For more information about these options, see View and configure a Cumulative Flow Diagram.

An example is shown in the following image that shows a count of user stories over time in the Researching, Committed, In Progress, and In Review states. Hovering over a date provides information on data for that date.

Screenshot of Power BI Cumulative Flow stacked area chart report, columns sorted in board column order.

For more information about cumulative flow, see Cumulative flow, lead time, and cycle time guidance and Cumulative flow, lead time, and cycle time guidance.

Note

This article assumes you read Overview of Sample Reports using OData Queries and have a basic understanding of Power BI.

Prerequisites

Sample queries

Queries in this section support returning cumulative flow data for User Stories. These queries specify the WorkItemBoardSnapshot entity set as they return data calculated for the board over time.

Note

To determine available properties for filter or report purposes, see Metadata reference for Azure Boards. You can filter your queries or return properties using any of the Property values under an EntityType or NavigationPropertyBinding Path values available with an EntitySet. Each EntitySet corresponds to an EntityType. For more information about the data type of each value, review the metadata provided for the corresponding EntityType.

Copy and paste the following Power BI query directly into the Get Data > Blank Query window. For more information, see Overview of sample reports using OData queries.

let
   Source = OData.Feed ("https://analytics.dev.azure.com/{organization}/{project}/_odata/V3.0-preview/WorkItemBoardSnapshot?"
        &"$apply=filter( "
            &"Team/TeamName eq '{teamname}' "
            &"and BoardName eq 'Stories'  "
            &"and DateValue ge {startdate} "
        &") "
        &"/groupby( "
            &"(DateValue,ColumnName,LaneName,State,WorkItemType,AssignedTo/UserName,Area/AreaPath),  "
            &"aggregate($count as Count) "
        &") "
    ,null, [Implementation="2.0",OmitValues = ODataOmitValues.Nulls,ODataVersion = 4]) 
in
    Source

Substitution strings and query breakdown

Substitute the following strings with your values. Don't include brackets {} with your substitution. For example if your organization name is "Fabrikam", replace {organization} with Fabrikam, not {Fabrikam}.

  • {organization} - Your organization name
  • {project} - Your team project name, or omit "/{project}" entirely, for a cross-project query
  • {teamname} - The name of the team to display CFD data
  • {startdate} - Start your report for items completed on or after a given date with the format: YYYY-MM-DDZ. For example: 2022-04-01Z represents 2022-April-01. Don't enclose in quotes.

Query breakdown

The following table describes each part of the query.

Query part

Description

$apply=filter(

Start filter() clause.

Team/TeamName eq '{teamname}'

Return items for a specific team.

and BoardName eq 'Stories'

Return items on the Stories backlog. You can specify other backlog names, such as Epics or Features. Specify the backlog level that corresponds to the process selected for your project.

and DateValue ge {startdate}

Return data on or after the specified date, for example, 2022-04-01Z represents 2022-April-01 2019-July-01.

)

Close filter() clause.

/groupby(

Start groupby() clause.

(DateValue, ColumnName, LaneName, State, WorkItemType,AssignedTo/UserName,Area/AreaPath),

Group by DateValue (used for trending), ColumnName, and any other properties you want to report on. Here we include LaneName to enabling filtering by swimlanes.

aggregate($count as Count)

Aggregate as count of work items.

)

Close groupby() clause.

(Optional) Rename query

You can rename the default query label, Query1, to something more meaningful. Simply enter a new name from the Query Settings pane.

Screenshot of Power BI query menu options, rename query.

Expand columns in Power Query Editor

From the Power Query Editor, choose the query with the data you want to transform. For a CFD chart, you'll need to expand the Area, Iteration, and AssignedTo columns. To learn how, see the following sections in Transform Analytics data to generate Power BI reports, Expand columns.

(Optional) Rename fields

Once you've expanded the columns, you may want to rename one or more fields. For example, you can rename the column AreaPath to Area Path. To learn how, see Rename column fields.

Close the query and apply your changes

Once you've completed all your data transformations, choose Close & Apply from the Home menu to save the query and return to the Report tab in Power BI.

Screenshot of Power Query Editor Close and Apply option.

Create the stacked area chart

In the following example, the query was renamed to CFD, but no columns were renamed.

  1. In Power BI, choose the Stacked area chart under Visualizations.

    Screenshot of Power BI Visualizations and Fields selections for CFD chart report.

  2. Add DateValue to Axis and then right-click DateValue and select DateValue, rather than Date Hierarchy.

  3. Add Count to Values.

  4. Add ColumnName to Legend.

  5. In the Filters pane, expand ColumnName, and select only the values you want to appear on the chart. For example, you may want to unselect New, Proposed, Done, or Closed.

    Screenshot of Power BI Filters for ColumnName.

The example report displays the columns in alphabetic order. However, the preferred order is to sort the data according to the column order, or progressive order.

Screenshot of Sample Power BI Cumulative Flow stacked area chart report, columns sorted in alphabetic order.

Sort columns in progressive order

To sort the chart columns in the order specific on the board, do the following steps:

  1. Create a new query in Power BI per the following queries. When done, rename the query to ColumnOrder.

Copy and paste the following Power BI query directly into the Get Data > Blank Query window. For more information, see Overview of sample reports using OData queries.

let
   Source = OData.Feed ("https://analytics.dev.azure.com/{organization}/{project}/_odata/V3.0-preview/BoardLocations?"
        &"$apply=filter( "
            &"Team/TeamName eq '{teamname}'  "
            &"and BoardName eq 'Stories'  "
            &"and IsCurrent eq true "
        &") "
        &"/groupby ((ColumnName,ColumnOrder)) "
    ,null, [Implementation="2.0",OmitValues = ODataOmitValues.Nulls,ODataVersion = 4]) 
in
    Source

Sort the report in the correct order

  1. In Power BI, expand the ColumnOrder query and select ColumnName.

  2. Select Column Tools and then Sort by Column and choose ColumnOrder. Screenshot of Power BI Column Tools, Sort by Column selection.

  3. Select the Modeling menu, and then Manage Relationships. Ensure there's a relationship between CFD.ColumnName and ColumnOrder.ColumnName. It's likely that the relationship was autodetected.

    Dialog for Manage Relationships showing a relationship between CFD.ColumnName and ColumnOrder.ColumnName.

  4. In the report created above, in the Legend, replace CFD.ColumnName with ColumnOrder.ColumnName to Legend.

    The report refreshes with columns sorted in the same order used by the board.

    Screenshot of Sample Power BI Cumulative Flow stacked area chart report, columns sorted in board column order.

Note

If any work items were in a column that has since been deleted, they will appear as "Blank" in the above report.