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  1. SAFe Program
  2. SP-2507

Taranta has a barchart widget

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      • this is a widget that can present clearly and compactly numerical information associated to individual or vectors of variables
      • this makes those quantities easily comparable
      • it could be used to present historical trends, day by day, of failures; or number of hourly alarms per station;
      • it allows interaction with individual variables and let's one temporarily disable some of them.

      Most graphical packages support such a display, suggesting its wide usage.

      Show
      this is a widget that can present clearly and compactly numerical information associated to individual or vectors of variables this makes those quantities easily comparable it could be used to present historical trends, day by day, of failures; or number of hourly alarms per station; it allows interaction with individual variables and let's one temporarily disable some of them. Most graphical packages support such a display, suggesting its wide usage.
    • Hide
      • barchart widgets can be placed in a dashboard or within box-containers
      • each widget can be configured as per Description below
      • unless configured differently, the widget allows interaction with data
      • the widget supports categories and sub-categories
      Show
      barchart widgets can be placed in a dashboard or within box-containers each widget can be configured as per Description below unless configured differently, the widget allows interaction with data the widget supports categories and sub-categories
    • 2
    • 5
    • 2.5

    • Enabler SP-2359 spike for new widgets in Taranta

    • Overdue

    • PI24 - UNCOVERED

    • Taranta Team_CREAM

    Description

      This is the implementation of the widget based on the output produced by the UX spike https://jira.skatelescope.org/browse/SP-2359 (which at the moment is not completed yet).

      What we need

      A "Barchart widget" that presents numerical values of corresponding categorical variables as vertical or horizontal colored bars. Categories can be clustered (ie each category" is a vector of N sub-categories, with N constant). Values of a cluster can be stacked or shown side by side.  

      As a reference see what Grafana offers: https://play.grafana.org/d/ktMs4D6Mk/5-bar-charts-and-pie-charts?orgId=1

      A user can interact with the chart:

      • by selecting/deselecting categories
      • by hovering on a bar and displaying its numerical value and categories
      • by zooming in/out

      Configuration options

      One needs to define the sources of the data and where the numbers come from. Sources can be attributes of a set of devices to be selected by name and address matching a pattern, or devices taken from a given explicit list, or devices belonging to a class.

      Subcategories can be a spectrum-valued attribute of devices, or a tuple of attributes of a device (like <voltage, current, temperature>).

      Numbers to be shown are values of attributes.

      One needs to be able to customize how the chart is rendered:

      • colors for the categories and sub-categories
      • axis scale and labels (eg "time", "# alarms") 
      • background grid (or only horizontal or only vertical) and labels for the ticks along the axis (for example, the vertical axis can be '# alarms' and its ticks can be (0, 5, 10, 15, 20, 25, 30))
      • whether to present absolute values or percentages
      • whether to stack or not sub-categories
      • whether to display labels for the subcategories
      • font size and style and location of the legend
      • font size and style for axis labels 
      • if hovering presents info
      • if clicking on label of a subcategory in a legend is allowed

      Estimated effort

      2 feature points.

      The effort estimation assumes that the library underlying many of Taranta charts, plotly, already supports barcharts: https://plotly.com/python/bar-charts/

       

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          Enabler - An Enabler supports the activities needed to extend the Architectural Runway to provide future business functionality. These include exploration, architecture, infrastructure, and compliance. SP-2359 spike for new widgets in Taranta

          • Must have - Items labelled as "Must have" are critical to the current delivery timebox in order for it to be a success.
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                g.brajnik Brajnik, Giorgio
                g.brajnik Brajnik, Giorgio
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                  Feature Estimate: 2.0

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