Scalar

The following scalar units are supported:

Description	ID	Label
Scalar (_1)	_1
Scalar factor	factor	*

Scalar (_1)

The Expression Editor supports the concept of an "abstract scalar", specified as "_1", which can be used as a general-purpose place holder for currency values which do not require special conversions. For example:

_1/kg

specifies an amount per kilogram.

 

Scalar factor

It is important to distinguish between a pure scalar value, which is essentially a quantity, and a factor value, which is a ratio of two measured values. So:

(100%)(factor) = 1	

because it is a ratio of 1, whereas:

(100%)(_1) = 100		

because it is a number of percent units.