Did you know that rules are used in TM1 to perform live calculations without the need for any manual intervention or on-demand scripts? This is a very powerful aspect of Planning Analytics and, when used properly, increase the value of the tool for your users.
There are some aspects of rules that I often see people forgetting. Here are some friendly reminders about how to use these components properly:
TM1 offers two different approaches to write a division formula via the “slash”. Not only do I often forget the difference between the two slashes, but I also sometimes forget the names of each slash.
The forward slash; goes bottom left to top right
Division by zero using this operator returns an undefined value
The back slash; goes top left to bottom right
Division by zero using this operator returns zero
TM1 allows for mathematical comparison of numbers using standard nomenclature such as =, >, < and <>. However, TM1 also offers the ability to compare strings via the same functionality. You can compare strings by simply adding an @ symbol to the nomenclature.
Numeric check: IF ( numValue = numCounter )
String check: IF ( strValue @= strCounter )
And, Or, Not
When writing comparisons, we often use the AND concept and the OR concept. AND is written by using the ampersand symbol ( & ) and OR is written by using the percent symbol ( % ). But did you know that you can also write NOT by using the tilde ( ~ ).
~( x = 5 ) is the same as writing ( x <> 5 )
Rules are a very powerful component of Planning Analytics. Hopefully these components help you continue creating efficient code.
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