Calcuations
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The data type “Calculation” allows to define mathematical formulas that can include other number attributes of the same field definition as variables. The calculation attribute of a field instance will then present the result, based on the current values of number attributes that are used as variables.
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The examplary field definition contains three data attributes of type number to store the planned budgets of different departments. To compute the total budget on the fly, we create a calculation that sums up their values.
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Mathematical Operators and Constants
You may create complex expressions by using the following operators and constants:
Symbol | Meaning | Example |
|---|---|---|
+ | Addition | 1+1=2 |
- | Subtraction | 1-1=0 |
* | Multiplication | 1*1=1 |
/ | Division | 1/1=1 |
^ | Power | 2^2=4 |
# | Modulo | 3#2=1 |
log | Logarithmic functions | log10(1000)=3 log2(1000)=9.9 |
ln | Natural logrithm | ln(2)=0,693 |
sqrt | Square root | sqrt(4)=2 |
sin,cos,tan | Trigonometric functions | sin(pi)=0 |
pi | Pi | 3.141 |
e | Euler | 2 |
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.718 |
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