You can use Boolean formulas with attributes as operands in filter definitions. The condition of the formula line is fulfilled if the evaluation of the formula is "true". The condition of the formula lines can be combined with the other filter conditions.
1. Make sure that the filter window of the desired network object type is open (Opening a filter window).
2. Select the desired tab (hierarchical filters) or the desired category in the list (POI filter and GIS object filter), if required.
By default, a row is displayed for the definition of a filter condition.
3. If required, select the Formula option in the column in which you define filter conditions.
4. If necessary, select the desired relation (Working with relations in filters).
5. In the Operand/Formula column, click the 
button.
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Tip: Alternatively, you can enter the formula directly the input field of the column. |
The Edit formula window opens.
6. Enter the desired formula (Type-dependent attributes).
7. Confirm with OK.
8. Confirm with OK.
The filter is applied.
Examples
You can enter the following formula attribute "A" >= 2 * attribute "B" in the form ["a"]>=2*["b"].
Operations that refer to text strings are also possible, such as the Extract substring function: WORDN([CODE],"-",1) = "X".
