Missing data indication

The system identifies data that were interpolated on both tabular views as well as report and chart views.

Tabular views

Across all controls, flags identify interpolated data:

{Li} indicates that linear interpolation was applied.
{knn} indicates that k-nearest neighbor interpolation was applied.
{igp} indicates that Ignore Point was selected for aggregation strategy.
{ } indicates that no interpolation algorithm was applied.
{knn,igp} indicates that k-nearest neighbor interpolation was applied with Ignore Point as aggregation strategy.

Figure 72. Example of a web table with interpolated data

The Interpolation Status column to the right indicates how the data were interpolated.

Figure 73. Example of a bound table with interpolated data

The Trend Flags column contains the interpolated data flags.

NOTE: Ignore Seriesnever triggers a flag because this property causes the system to ignore the entire series. Interpolated data do not appear in the table, report or chart. This was the framework’s default behavior when no data are available.

Charts

A tool tip on a chart indicates an interpolated or a real record.

Figure 74. Numeric writable chart

The tool tip indicates that no interpolation algorithm was applied.

Reports

Reports provide interpolated data in a separate column. To view these data, you must enable Show Interpolation Status in advanced settings.

Figure 75. A report configured to show interpolated data

The interpolated data are visible in the table.