Configuring: Delay

Select whether the delay will be row based or timestamp based, which fields will be delayed, and the period by which they will be delayed. The delay can be a default delay, or customized specifically for each field. The resulting dataset will contain the selected fields with the delayed values and updated timestamps, where applicable.

Worked example: Delay

Steps to configure

Delay period: Select the delay type and set the default delay. Decide whether to interpolate values or not.
Field selection: Select the fields to be delayed.
Field periods: Enter the customized delays for each selected field.
Execute: A new dataset will be created, containing only the selected fields, delayed timestamps and corresponding values.

Step 1: Delay period

Select the delay calculation type and enter the default delay period in rows or seconds.

Row based calculations will apply the delays down the configured number of rows, the timestamps will be ignored.
Time based calculations will assign a new timestamp to apply the delay.
Selecting to interpolate the values will be calculated between consecutive timestamps, instead of holding the value at the previous point until the following point is reached.
The interpolated values can increase, decrease or remain constant, depending on the relation of the two original points.
Interpolation does not occur in row based delays.
The timestamp calculation type will be disabled if the dataset contains no timestamp field.
Set the default delay in either number of rows or seconds. This value can be customized for each field during later configuration.
Default:
- row based will be the selected calculation type
- the first timestamp field will be selected
- the period will be 0
Minimum configuration: period should be > than 0

Step 2: Field selection

Select the fields that you want to delay.

Only integer, double and/or string fields are listed.
Default: all fields are selected.
Minimum configuration: at least one field should be selected.

Step 3: Field periods

Enter the individual delays for each of your selected fields. This will be either in seconds or in row numbers, depending on the initial delay calculations configured.

If you have a lot of selected fields, they will be displayed over multiple pages.
The delay periods should be > 0, and should be an integer, if row based calculation is selected.
Default: the default delay is entered for each field.

Step 4: Execute

A new dataset will be created, containing only the selected fields, with the delayed timestamps and corresponding values.