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- For a time series, it will be registered per timestep, which validation steps have been performed
- The progress in the validation process can be used to make timeseries time series data (un)available fro for transformations / display
- The user gets a visual indication (tooltip, validation step columns in table view, background color and color bar) which validation steps have been performed
- The user gets extended possibilities to validate timeseries manually
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The validation procedure of an organisation can consist of various (serial) validation tasks: Primary/Secondary validation, transformation interpolation of data, visual inspection, ... In the end, a validated timeseries will possibly have a quality flag (Reliable/Doubtful/Unreliable/Missing) as a result from the validation process. Since version 2012.01 FEWS stores not only the quality flags, but also the source of the flag, the so-called flagSource. So the user is able to see why a certain value is validated as unreliable, eg. due to exceeding of the hard max. The regular flagSource (which is visible in the Delft-FEWS interface as the 'Validation' item), in combination with the quality flag is therefor a summary of the validation process.
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FlagSource columns can be defined in a dedicated flagSourceColumns regional configuration file, see FlagSourceColumns in the Configuration guide. These flagSource Columns are stored for each timestep for all timeseries that have been validated in the FEWS database. Various configuration options allow the user to harness the Validation Status in the operational process, either by visualisation, export, conditional filtering in transformations, etc.
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The flagSourceColumns can only contain the existing flagSources. Also see D Quality flagsTime Series Flags. These flagSources will automatically be set to the flagSource Column when a flag is changed in the respective validation step
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Since 2016.01 it is possible to open up 'Time of Validity' (Tv) related functionality in the timeSeries display, by configuring a timeOfValidity element in the flagSourceColumns.xml configuration file.
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A Tv button becomes available in the time series button panel, which activates all 'Time of Validity' related functionality. The button is only be visible in the button panel, when the timeOfValidity element has been defined in the flagSourceColumns.xml file. Note that none of the Tv functionality is available when the Tv button is not activated.
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Time of Validity in Database Viewer
When the timeOfValidity element has been defined in the flagSourceColumns.xml file, the Time of Validity will be calculated for each timeseries in the database lister. Note that - different from the time series in the time series display - the Tv is calculated based on the complete time series.
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When the Tv button is selected, the user is able to update the flagSource column related to Tv for all timesteps up to the current position of the cursor (current selected timestep) with the defaultFlagSource as defined in the flagSourceColumn configuration file.
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