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Reference Guides
Reference guides are available for functions and commands supported by OML, Tcl, and Python.
Scripting Guide for OpenMatrix Language
OpenMatrix is a mathematical scripting language.
Data Types
Data types are items that are constant throughout the life of the application and are built into the OpenMatrix language.
Double
The double data type uses numeric literals.

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What's New
Discover new features and enhancements.
Get Started
Discover Compose, including its language support and system requirements.
Tutorials
The Compose tutorials and associated example model files help introduce you to the basic functionality of the software.
User Guide
Provides detailed information regarding the features and functionality available in Compose.
Reference Guides
Reference guides are available for functions and commands supported by OML, Tcl, and Python.
- Scripting Guide for OpenMatrix Language
  OpenMatrix is a mathematical scripting language.
  - Literals
    Literals are items that are constant throughout the life of the application. Literals include numeric, imaginary, characters, strings, logicals, and Other (NaN/Inf).
  - Data Types
    Data types are items that are constant throughout the life of the application and are built into the OpenMatrix language.
    - Data Types
      Data types are items that are constant throughout the life of the application and are built into the OpenMatrix language.
    - Complex
      The Complex data type uses imaginary literals.
    - Double
      The double data type uses numeric literals.
    - Strings
      The string data type involves a sequence of characters and uses string literals.
    - Structures
      Structures are a data type similar to cells. However, where cells use numeric indices to refer to specific pieces of data, structures use strings.
    - Cell Arrays
      Cell arrays are generic data containers.
    - Multidimensional Matrices
      OML supports multidimensional matrices.
    - Sparse Matrices
      Sparse matrices are a special case of 2D matrices, where only non-zero elements are stored and displayed for efficiency. A sparse matrix typically has a high percentage of zero elements.
  - Strings
    Strings are arrays of characters.
  - Variables and Assignments
    OML language scripts manipulate data through variables. Variables are referred to by their name (alphanumeric) and can be created (assigned) and deleted as described in this section.
  - Indexing
    Indexing is used to retrieve one or more specific values out of a collection.
  - Operators
    Operators are used to combine operands.
  - Operator Descriptions (tables)
    Each operator in this section is explained with the operations of scalars, vectors, and matrices that are allowed for said operator.
  - Expressions and Statements
    Statements are made of expressions and may be a simple expression or a more complex variety of expressions.
  - Flow of Control and Looping
    Loops are used to perform the same set of statements multiple times.
  - Workspace and Scoping Rules
    There are two types of workspaces: Local and Global.
  - Functions
    Functions are packets of statements that can be used repeatedly.
  - Scripts and Functions
    OpenMatrix statements persist in .oml files.
  - Files
    This section describes files that can be manipulated by the OpenMatrix Language.
  - Error and Warning Messages
    Errors and warning messages are both output in the console (or the Command Window in GUI mode) of Compose.
  - Objects in OpenMatrix Language
    Objects in OML are defined using the classdef keyword. This creates a blueprint for an object but does not actually create (instantiate) anything.
- Reference Guide for OpenMatrix Language Functions
  The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
- Python in Compose Reference Guide

Home
Reference Guides
Reference guides are available for functions and commands supported by OML, Tcl, and Python.
Scripting Guide for OpenMatrix Language
OpenMatrix is a mathematical scripting language.
Data Types
Data types are items that are constant throughout the life of the application and are built into the OpenMatrix language.
Double
The double data type uses numeric literals.

What's New
Get Started
Tutorials
User Guide
Reference Guides

Double

The double data type uses numeric literals.

Examples of valid doubles:

3
3.
.3
3.3
33
3E3
3.3e3
-3
3.3e-3
003
3d3
3D-3

Examples of invalid doubles:

.
3.3.3
3E
E3
3E3.3
4z

See Also

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