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The DELTA Operation
ITERCNT ( )
=
20 limits the number of iterations to 20. Multiplan
stops after the 20th iteration.
A DELTA value that applies only to the differences in a pariticular part of
the model is called a "local" DELTA. Begin and end that part of the
spreadsheet with cells that contain the DELTA operations.
Each time Multiplan encounters a DELTA operation, it resets the internal
DELT A value to zero. By entering more than one DELTA, you can isolate
the maximum change in a particular part of the model.
DELTA ( )
<
n
2 3 4
5
'------DELTA
////////////////////////////////
///////1////////////////////////
////////////////////////////////
DELTA
#1
I
2
3
4
5
IF
(I
=
1,'''',DELTA( ))
Completion Tests
Use ITERCNT to limit the number of iterations. Enter the ITERCNT
formula in a cell, and enter the cell reference in the completion test at field
of the Options command.
Enter the first DELTA in the cell immediately above the block of cells for
which you want a local DELTA value. (Otherwise, you can encounter
problems with the order of evaluation.) Then, enter the test DELTA in the
cell immediately below the block of cells for which you want a local
DELTA value.
)
)
)
)
1
)
y,
N
)
)
)
,
)
)I
)
)
)
}
)
}
}>
} ,
Multiplan recalculates the block of cells by columns. The model provides
local DELTA values only if the columns contain no other circular
references.
187
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