Using Python For a Field Calc

How do I use Python as a calculator?

3.1. Using Python as a Calculator

1. The interpreter acts as a simple calculator: you can type an expression at it and it will write the value.
2. The integer numbers (e.g. 2 , 4 , 20 ) have type int , the ones with a fractional part (e.g. 5.0 , 1.6 ) have type float .
3. Division ( / ) always returns a float.

Can you use regular expression in field A in calculator?

Summary. The Field Calculator (Regular Expression) Processor can be used to leverage the power of regular expressions to identify a pattern within a target field and extract the substrings from received events.

What is a field calculator?

The ^{Field Calculator}. button in the attribute table allows you to perform calculations on the basis of existing attribute values or defined functions, for instance, to calculate length or area of geometry features.