Skip to content

Observation Periods

Observation periods will handle the time period to view when showing time series.

When more than one time series has been created, it is possible to select what observation period to use when showing time series.

Observation periods are maintained from the General Settings page, clicking the Observation Periods button.

Click the Details button to configure the Observation Period.

  • Active
    Activate the observation period by checking this field.
  • Id
    Id of the observation period. The id is used as reference.
  • Name
    Name of the observation period, shown in the Observation Period selector form.
  • Description
    Description of the observation period.
  • Group
    Group in the observation period navigation panel where the observation period should be placed.
    If the group is not specified, the name of the observation period is used in the navigation panel.
    Note that for period types Fixed Dates and Relative to Now, navigation panel group is set to Event and Relative to Now respectively.

  • Observation Period Type
    • Entire Forecast period shows the entire forecast period of the selected simulation.
    • Relative to ToF shows a period relative to Time of Forecast.
    • Relative to Now shows a period relative to the time now.
    • Relative to Date shows an observation period relative to a selected data.
    • Fixed Dates shows a fixed period.
  • Relative Period
    For relative periods (Relative to ToF and Relative to Now), the relative period is defined here.
    Time Zone can be specified for Observation Period Type = Relative to Now only. The time zone specified, is used for getting the current time used to determine the Start and End dates of the observation period.
  • Fixed Dates
    Specify the period to use for period types Fixed Dates and Relative to Date.
  • Display Future Periods
    For observation period type Relative to Date, it is possible to specify if future periods should be shown in the observation period selector, when the To date is a future date.
    If not checked, the last period in the observation period selector will be the period of the current date and time.
  • Relative to Date
    Specify the length of each period for observation period type Relative to Date.
    Each period will have the length of a day, a week, a month or a year.
  • Time Series Evaluation Period
    Specify the evaluation period for threshold calculation for instantaneous and accumulated time (step_accumulated, mean_step_accumulated, reverse_mean_step_accumulated and accumulated) series.
  • Threshold Time Step
    Specify the length of each threshold time step. This will also be the time step used when increasing and decreasing time in MIKE OPERATIONS.
    • Time Step Unit
      Defines the unit of the time steps.
    • Time Step Length
      Defines the length of the time steps.
    • Query Period Extension
      The number of time steps to extend the observation period with before and after the start dates.
      The query period defines the period used to get data from the database on a time series. Extend the period to make sure that time steps are available for interpolation.

  • Update Mode
    Defines how the threshold database cache is updated.

    • Never (default)
      The threshold database cache is not used (as in previous versions of MIKE OPERATIONS). This means that thresholds for stations are calculated when the observation period is selected.
    • Always
      The threshold database cache is calculated in both MO Desktop and on MO Web, when the threshold database cache is outdated according to the threshold database cache configuration.
    • Locally
      The threshold database cache is calculated in MO Desktop only. In MO Web the threshold database cache is loaded, but not calculated and updated in the database. Use this method for observation periods where the cache has to be prepared for MO Web, e.g. by running jobs.
    • Web Server
      The threshold database cache is only updated by the web server. This means that the threshold database cache is loaded in MO Desktop, but not calculated and updated in the database.
    • Once
      The threshold database cache is updated once in MO Desktop or MO Web depending on where the observation period is accessed the first time. This mode is typically used for historical event, where the observation period will not get new or updated data.

  • Update interval (minutes)
    The interval where the threshold database cache should be updated.
    5 minutes means that the database threshold cache will be updated when selecting the observation period and the existing cache in the database is older than 5 minutes.

  • Update Specific Times
    Specific times where the threshold database cache should be updated. (e.g. 20:00;10:00).
    The cache will be updated when selecting the observation period and one of the times has been exceeded.
    E.g if the latest database threshold cache was updated at 20:13 and the current time has exceeded 10:00.
  • Update Period
    Period relative to the observation period where the threshold database cache of the observation period should be updated.
    • For Relative to date The update period is relative to the start date of the observation period.
    • For Relative to ToF and Entire Forecast Period the update period is relative to TimeOfSimulationRun of the selected simulation.
    • For Fixed Dates and Relative to Now the update period is not used.