Expressions

Analytica User GuideExpressions

This chapter introduces expressions -- the Analytica language used in definitions to calculate the value of a variable from other variables, such as

(-B + Sqrt(B^2 - 4*A*B))/(2*A)

An expression can consist of or contain a literal number (including Boolean or date), a text value, an identifier of a variable, an arithmetic expression, a comparison or logical expression, IF THEN ELSE, or a function call, such as Sqrt(B). These constructs are also introduced in this chapter.

For details on more advanced constructs, such as BEGIN ... END statements, For and While loops, local variables and assignments, see Procedural Programming.

Sections

• Numbers
• Date and Time Values
• Boolean or truth values
• Text values
• Operators
• IF a THEN b ELSE c
• Function calls and parameters
• Math functions
• Numbers and text
• INF, NAN, and NULL - Exception values
• Warnings
• Datatype functions

See Also

• Expression Syntax
• Parsed Expressions
• Expression Assist
• The Expression popup menu
• Tutorial: Using local variables and indexes in an expression

User Interfaces for End UsersExpressionsArrays and Indexes