Sedona XPRESSion Evaluator Reference Guide

Calc Expr Units VI

	expr in is a compiled postfix expression obtained from a previous call to Compile Expr VI.
	error in (no error) describes any error conditions prior to this VIs execution.
	unit name is the full name of the physical units associated with the resultant of expr in. The physical units are determined by resolving all variable references to the physical units associated with them. If the resulting units do not correspond to any of the physical units stored in the internal database, then unit name is set to <unknown>. The internal database stores information about an extensive default library of physical units as well as information about any user-defined units.
	base units is a string describing the physical units resulting from the expression in terms of fundamental (or base) units. For example, the base units for a Newton are (kg m s^-2). The XPRESSion Evaluator uses the following units as base units: radians (rad), steradian (sr), second (s), meter (m), kilogram (kg), Ampere (A), Kelvin (K), mole (mol), and candela (cd).
	error out contains error information. If the error in cluster indicated an error, the error out cluster contains the same information. Otherwise, error out describes this VIs error status.
	unit abbreviation is the common abbreviation for the physical units associated with the resultant of expr in. The physical units are determined by resolving all variable references to the physical units associated with them. If the resulting units do not correspond to any of the physical units stored in the internal database, then unit abbr is set to <unknown>. The internal database stores information about an extensive default library of physical units as well as information about any user-defined units.