Description
This block is used to apply a delta between values.
Implementation
-
Drag and drop a delta block from the palette in a data strategy
Properties
-
Artifacts: Artifacts created by this block
-
Tables: the resulting table.
-
-
Target: the table on which the delta will be applied.
-
StatusPolicy {Union, Intersection}: Define how the delta on the status will be computed:
-
Union: Sum of the two statuses. Ex: the union of {fault, down, alarm} and {alarm} is {fault, alarm, down}
-
Intersection: Common parts of the two statuses. Ex: the intersection of {fault, down, alarm} and {alarm} is {alarm}
-
Advanced Properties
-
DeltaPolicy {Previous, Next}: How the delta will be computed
-
Previous: the result in a given row will be the delta of the current row and the previous one
-
Next: the result in a given row will be the delta of the next row and the current one
-