Calculation contex in sap business objects

Dmitry Anoshin
HOW TO USE CALCULATION
CONTEXT IN SAP BUSINESS
OBJECTS

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By default, when objects are placed in a block, the projected values of the measures are aggregated to the
level of the dimensions displayed in the block.
If you create a table showing Year and Sales revenue (1), the measures will be aggregated to the Year
level, as shown in the first table.
What is Dynamic Calculation in BO
If you added State to the beginning of the table
then the Sales revenue would be aggregated
by year for each state, as shown in the second
table (2).
When you remove a dimension from the table (Year, in
this case), as in the third table (3) in the diagram, Web
Intelligence automatically recalculates the sales revenue
data according to the new context (State, in this case).
You can see in this example that sales revenue is
calculated at the row level. In Web Intelligence, this row
level calculation is the default calculation context for any
measure object or variable placed in a column.
These examples demonstrate the first way of controlling a calculation, where the
level of aggregation is affected by the environment of the report:
The projected values of a measure are aggregated to the level of the
dimensions displayed in the block.

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Projection function
When dimensions are removed from or added to a block the context changes and the measure amounts
also change. This is controlled by the projection function set on each measure by the universe designer.

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What is Input and Output context*
Input and output contexts must be added to a calculation if you want the context of the calculation to be something other
than the default context.
• Input context consists of any dimension objects that need to be included directly IN the calculation itself.
• Output context consists of one or more dimension objects that determine where the calculation is placed in the report, or in
other words, the level where the calculation is to be turned OUT in the report.
*Certain functions (like RunningSum() for example) also have a “reset” context.

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There is a simple (but powerful) set of context operators that we can choose from.
• In is used to specify exactly which dimensions to include in a context. Other dimensions in the block
are ignored. Adding / removing elements from the block does not impact this calculation unless a
removed dimension was specified in the context. In that case a #MULTIVALUE error is displayed.
• ForEach is used to include a dimension in a context. The calculation context is still affected by other
values in the block.
• ForAll is used to exclude a dimension from a context. Other dimensions of the block will still be
considered. Adding or removing values from a block might change the value, but it will always ignore
the ForAll items.
The operators listed above all require one or more dimensions as part of their syntax.
However, calculation context can be specified by more than a set of dimension values. There are a
series of report structure keywords that can be used as well.
• In Report sets the context at the report or “grand total” level. Any formula with these keywords for
the context will return an overall total. Note that the total may still be affected by report filters.
• In Block sets the context for each block. If there is only one block on a report then “In Block” and
“In Report” are going to be the same. But when a block is broken up into sections, then this context
will generate a total for each section value.
• In Body is the standard default context for each row of data.
There are couple practice examples on the next slides, which help you to understand it better
Context Operators

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The following example demonstrates how to extend the syntax of a
formula in order to redefine the output context that will be used to
calculate the measure.
To redefine the output context using extended syntax
1. Create a new Web Intelligence document using the eFashion
universe.
2. In the Java Report Panel, build a query by dragging or double-
clicking the State, Year and Sales revenue objects to move them
into the Result Objects pane.
3. Click Run Query.
4.In Edit Report view, select the State column to highlight it.
5. Click the Insert/Remove Break button on the Reporting toolbar
to break the table into separate blocks.
The Sales revenue measure is currently calculated to show each
state's total sales revenue per year. You can easily see each state's
best year amount as you view the rows in the block.
6. Place a sum and a descending sort on Sales revenue.
Ex.1 To redefine the output context

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7. Create a new table in this report by dragging
and dropping the State and Sales revenue
objects just to the right of this block.
(To select more than one object at a time, click
the first object, hold down the Ctrl key and click
another object. Continue holding down the Ctrl
key and drag both objects at the same time to a
position next to the existing block.)
In this new table, you can see each state's overall
sales revenue, without either the revenue per year
or the state's best year amount. The sales revenue
data has been aggregated to the state level.
8. Create a new variable called State's best year
total. Use the following formula in the variable
definition:
=max([Sales revenue])
Ex.1 To redefine the output context (cont)

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9. Drag and drop the new variable so that the
data is projected in a new column to the right
of the Sales revenue, in the second block.
If you compare the state's best year revenue
shown in the first block with the data calculated
by the variable you just created, you can see
that the default behavior of the calculation, at
the row level, is obviously not the correct
context.
By default, Web Intelligence does not know
that the Year object needs to be included in
context of the calculation - it simply using
State as the input context in order to calculate
the values, and the result is the exact same
calculation that the Sales revenue object
projects.
Now you are going to extend the syntax in
order to specify the correct Input and output
context so that Web Intelligence knows which
context to use to calculate the data correctly.
Ex.1 To redefine the output context (cont)

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10. Modify the variable definition to specify the
Input and output context, using this formula:
=max([Sales revenue] In([Year];
[State])) In ([State ])
Web Intelligence now calculates the data
correctly, because it calculates the maximum
amount of Sales revenue for each State any one
Year.
Ex.1 To redefine the output context (end)

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1. Create a new Web Intelligence document using
the eFashion universe.
2. In the Java Report view, add the
Year, Quarter, State and Sales revenue
objects to the query.
3. Click Run Query.
4. In Edit Report view, remove the Quarter and
the State object from the table.
5. Hold down the Ctrl key and drag the table to
the right to make a duplicate copy.
6. In the copied table, drag the Quarter object
and insert it in a column between the Year and
Sales revenue columns.
7. Apply a break on the Year column.
8. Click the Sales revenue column to highlight it.
9. Click the drop-down arrow next to the Insert
Sum button on the Report toolbar and select
Max.
10. Create a Max Quarterly Revenue variable
using this formula:
=max([Sales revenue] In([Year];
[Quarter])) In ([Year])
11. Drag the new variable to the right of the Sales
revenue column in the original table.
Ex.2 Using the In context operator

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1. In the new report, press the Ctrl key and drag the
Year and Sales revenue objects to create a new
vertical table.
2. Create a Sales revenue By Year for California
variable with the following Input context:
=[Sales revenue] Where
([State]="California")
This context uses the Where operator to isolate
California state in the calculation.
3. Replace the Sales revenue object in the table with
the new variable.
Ex.3 To use the In and Where context operators

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5. Create the Sales revenue for all States calculation by dragging and dropping the Sales revenue
object from the Data tab and dropping it outside the table anywhere in the report space.
6. Insert a free-standing cell to the left of this calculation and enter text that identifies the calculation.
7. Create the Highest Sale Revenue for any one State variable using this syntax:
=Max([Sales revenue] In ([State]))
This context uses the In operator to specify Input context. This assures that the calculation only
addresses the State values when locating a maximum amount.
There is no output context defined, so the calculation uses the default output context of the entire
report, because it was placed at the report level rather than in a table.
8. Drag the new variable in the report space and insert a free-standing cell with text that identifies the
calculation.
9. Create the Highest Annual Revenue for California variable using the following syntax:
=Max([Sales revenue] In([State];[Year]) Where([State]="California"))
This variable definition uses both the In and Where operators to achieve the correct calculation. Both
operators were used in defining the Input context.
- The In operator forces the =Max function to look in the State values first and then the Year values
within each State in order to locate the maximum value.
- The Where operator assures that the =Max calculation is only valid where the State is California.
Ex.3 To use the In and Where context
operators (cont)

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10. Create the Sales revenue for California for 2003
variable using this syntax:
=[Sales revenue] Where([State]="California' And
[Year] =2003")
Like the Sales revenue By Year for California object, this
calculation uses the Where operator in the Input context
to ensure that the calculation is valid for only those values
denoted by the Where operators.
It is not necessary to list the components of the calculation
in order of granularity when using the Where operator. You
must list the components when using the In operator.
11. Insert this variable in the report and insert another
free-standing cell with text to identify the calculation.
Ex.3 To use the In and Where context
operators (end)

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1. In the new report, press the Ctrl key and drag the
Year and Sales revenue objects to create a new
vertical table.
2. Create a Max Quarterly Revenue variable with
the following input context:
=Max([Sales revenue]ForEach([Quarter])) In
([Year])
3. Insert the new variable in the table.
The Year dimension is the default input context in the
block. By using the ForEach operator, you add the
Quarter dimension to the context, giving an input
context of ([Year];[Quarter]).
Ex.4 To use the ForEach context operator

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1. In the new report, press the Ctrl key and drag
the Year, Quarter and Sales revenue objects to
create a new vertical table.
2. Click the Sales revenue column and apply a
sum. The standard sum function inserts a footer in
the table and displays the total revenue for all
quarters in the three years, using the default
calculation context.
You want to display the total revenue for each
year. But to total revenues by year the the input
context needs to be (Year); by default, it is
(Year; Quarter). Therefore, you need to remove
Quarter from the input context by specifying
ForAll ([Quarter]) in the formula, which looks
like this:
=Sum([Sales revenue]) ForAll ([Quarter])
3. Create a Yearly Total variable with the following
input context:
=Sum([Sales revenue]) ForAll ([Quarter])
4. Insert the new variable in the table.
Ex.5 To use the ForAll context operator

Calculation contex in sap business objects

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