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      2dzdelta0
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      2dzdelta0

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      Article summary

      2dzdelta0

      Returns the difference between the current row and previous row for the specified measure, resetting each time dimension 1 changes

      Requires 2 dimensions (2d)

      If only 1 dimensions specified, will always return Current Row (RowX)

      Calculates difference between rows (delta)

      Resets to Current Row (RowX) each time dimension 1 changes (0)

      Purpose

      Use this function to: 

      • Calculate monthly change in sales, resetting at start of each year.

      Calculation

      2dzdelta0 = RowX - Row(X-1)

      RowX = value for current row
      Row(X-1) = value for previous row
      2ddelta0 = RowX - Row(X-1)

      Sample Result

      Parameters

      ParameterDescription
      DimensionsDiscrete field(s).    All fields must come from the same table.
      NameName to be displayed as Column Header in result grid
      Measure

      The field to be used in the post-function calculation.

      • Must be numeric if Function is anything other than COUNT.
      • Must come from same table as DIMENSIONS.
      • Supports Discrete or Continuous DataTypes.
      FunctionCOUNT / SUM / AVG / MIN / MAX / STDEV
      Post2dzdelta0
      Value

      Optional.   Filter to apply when evaluating FUNCTION.   Only records in the Filter Recordset will be included in the Function and Post-Function calculations.

      Must come from same table as DIMENSION/MEASURE or be linked to the Dimension table.

      Axis0 / 1.    Y-Axis to use when plotting graph.     Default = 0
      PlotY / N.   Specifies whether measure’s output column should be plotted on graph.  Default = Y
      ResolveOptional.   Resolve level for the measure.   If blank, Resolve = Dimension Table
      Series Type

      Default / Bar / Stacked Bar / Line / Spline / RangeLow / RangeHigh / CSLow / CSHigh / CSOpen / CSClose

      Determines the graph style for the measure.

      PopupDefault / None / Extended
      Prefix$ / £ / E / %

      Usage Notes

      Row order is important when working with deltas.   Set row order using Ascending / Descending Value/Labels

      2dzdelta0 is the same as 2ddelta0 except that if the delta returns a null, zdelta will return 0.00

      Use 2dzdelta if null values need to be treated as if they were zeros.

       

      Example

      NOTE: Measure 1 is included purely for illustration. It is not necessary to include this measure for the calculation to work.


      Example use: Changes in sales, for product, by group 

      Dimension:  [transactions].[product_group], [transactions].[productid]

      Measure 1

      • Name: = COUNT
      • Measure: =[transactions].[cid]
      • Function: =count
      • Post: =
      • Value: =
      • Axis: =0
      • Plot:=Y
      • Resolve:=
      • Series Type:=Default
      • Popup:=Default
      • Prefix:=

      Measure 2

      • Name: = 2ddelta0
      • Measure: =[transactions].[cid]
      • Function: =count
      • Post: = 2dzdelta0
      • Value: =
      • Axis: =0
      • Plot:=Y
      • Resolve:=
      • Series Type:=Default
      • Popup:=Default
      • Prefix:=



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