Analyzing Coverage in the Graphical View

From the Coverage graphical view, you can analyze the traceability links covering the elements of the scope traceability channel.

For more information about the traceability computation, see About Traceability Computation.

This task shows you how to:

Before you begin: Enter the Coverage view. For more information, see Entering the Coverage View.
See Also
Creating Links from the Coverage View

Display Structure and Impact Views

To display more links for the active element, switch between these two views.

  1. Select an element.
  2. From the context toolbar, click one of the following commands:
    CommandDescription
    Structure view

    The structure view is useful to create links. It displays:

    • The structure of the root elements that are linked with the traceability channel
    • The links between elements in the structure.


    Impact view

    The impact view is useful to analyze impact before modification. It displays:

    • The structure of the active element
    • On the left: The target linked elements (recursively)
    • On the right: The source linked elements (recursively)


    Important: Linked elements that are displayed are those that are recursively target (on the left) and recursively source (on the right) for the active element.

    For example, in the screenshot above:

    • Elements are those that are target links for elements , themselves linked as target with the active element .
    • Structure displays only those elements that are linked with structure .
    • Structure displays only those elements that are linked with structure .
    Notes:
    • The default view depends on the element you activate. When displaying:
      • The root node: the Structure view is displayed

      • A child level of the root node: the Impact view is displayed.

    • When changing the view display and then navigate:
      • From the work area, the view selection is applied to all elements
      • From the tree, the view selection is applied to the selected element only

Filter the Structure Elements

  1. To filter the structure, select an element and click one of these contextual commands:
    CommandDescription
    Keep Object Keeps the branch of the selected element (parent and child levels).
    Hide Object Hides the selected element and its children from the structure.

    Tip: To unhide these objects, click Restore Complete View .

  2. To display specific elements in the selected structure:
    1. Enter a string in the Quick Filter box.
    2. Press Enter.
    3. To remove the string, click Erase .

    • The elements with this string in their title, description or properties are highlighted with a strong yellow.
    • The closed elements containing such elements in their unexpanded structure are highlighted with a light yellow.
    • The other elements are hidden.

Display Covering and Coverage Ratio

  1. Select a traceability label (percentage).
  2. In the properties area, expand the Details section.

    • Coverage Ratio: The number of covered requirements versus the total number of requirements in this document.
      Note: This is the same value as displayed in the traceability label, with one more digit.
    • Covering Ratio: The number of covering requirements versus the total number of requirements in this document.

Analyze Suspicious Links (New or Modified)

When reloading a coverage view, the current traceability is compared with its previous version. An orange bullet identifies those links fulfilling at least one of these conditions:

  • The link is new
  • The link properties are modified
Notes:
  • In Systems Traceability Dashboarding, any type of link is analyzed and can be considered as suspicious.
  • Do not confuse the following information:
    • Links identified as suspicious in Systems Traceability Dashboarding: identified with an orange bullet
    • Links inheriting a Suspect value (Status attribute) from Traceable Requirements Management: identified with an orange link.
    For more information, see Color Codes.

  1. Select one or several links.

  2. From the context bar, select one of these commands:
    CommandDescription
    Clear Suspicion Removes the orange bullet identification (if you consider that this link is correct).
    Set Suspicion Adds an orange bullet identification (if you consider that this link requires more analysis).

    Tip: By default, suspicious links are identified when opening the coverage view. To disable the instant comparison used to detect such links, add the following code line in the scope file (before the last closing curly bracket): 
     "metadata":{"Traceability.Cache":"false","Traceability.Marks.Load":"false","Traceability.Marks.Save":"false"