How do I set trends on charts?

Introduction

To set trends at design time

To set trends at run time

Introduction:

You can set trends on each data series in your Chart dashlet at design time (when creating or editing the chart) or during run time (after the chart has been created).

To set trends at design time:

1. When you create or edit a Chart dashlet, navigate to the Series Data section and select/add the data series that you want to see a trend for.
   
   
   
   Specify if you want to display the trend line on the chart with the Show Trend Line switch. The trend line is calculated based on the data displayed. The trend is calculated based on the timeframe of the Chart dashlet itself. From ENA v18.0 upwards, you can choose the timeframe against which the trend is calculated - choose from one of the following:
   • 2 weeks.
   • 4 weeks.
   • 8 weeks.
   • 16 weeks.
     
     

To set trends at run time:

You can set a 4 week trend on any Chart dashlet (on a system dashboard or on a custom dashboard) from the dashlet's Overflow Menu. This trend will be based on 4 weeks' worth of data. This trend will apply only to the selected Chart dashlet, and will override any trend that might already be set at design time (see the section above for help and information on setting trends at design time).

There are a number of points to consider for run time trends:

• You can only set a run time trend against a stream series chart, not a ticker chart. The difference between a ticker chart and stream chart is that the stream in a stream chart is saved and has historic data. With a ticker chart, the data is stored only on the live chart itself.
• If you set a trend from the Overflow Menu, the trend will be persistent on that Chart dashlet until you turn it off. It will persist based on user account. This means that once set, you can navigate away from the Chart dashlet and then return to it, and it will still be present.
• If you have set a prediction at design time, but then set a trend at run time, the prediction will disappear from the Chart dashlet. This is because predictions are based on the design time trend. When you remove the run time trend, the prediction will return to the Chart dashlet.
• If you have set a design time trend (e.g., a 2 week trend), then override it with a run time trend, and then make a change (via the Edit Chart Dashlet form) to the original design time trend (e.g., set it to 8 weeks), then the run time trend will continue to override the design time trend (until the run time trend is turned off).
• When you set a run time trend, a trend will be applied to all data series on the Chart dashlet, regardless of how many design time trends you have previously set.
  • For example, you have a Chart dashlet called Chart 1, which displays four data series:
    • Admin Down% (hourly)
    • Degraded% (hourly)
    • Down% (hourly)
    • OK% (hourly)
  • You have set design time trends on Degraded% and Down%, but not on the other two.
  • When you set the run time trend on Chart 1, a 4 week trend will appear for all four data series.
  • When you remove the run time trend, the 4 week trends will disappear and the two design time trends (for Degraded% and Down%) will reappear on the chart.

To set a run time trend:

1. Navigate to the Chart dashlet to which you want to add a trend.
2. Click the Overflow Menu and then tick the Show 4 Week Trend box.
3. The chart will update to display the 4 week trend.
4. To remove the 4 week trend, untick the Show 4 Week Trend box.
   
   

Note, if you open the chart in a new tab, the run time trend will not appear automatically. This is because the new tab does no belong to the dashlet and so does not retain its settings. You can set a trend on this new tab through the Overflow Menu, but it is not persistent. This means that if you close the new tab and then reopen it, the run time trend will be gone.