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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.
Strings
Strings are arrays of characters.
Manipulation
Strings are actually arrays of characters. As such, they can be manipulated as vector/matrices.

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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.
  - 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.
  - Strings
    Strings are arrays of characters.
    - Encoding
      Strings in OpenMatrix Language are encoded using UTF-8 encoding.
    - Manipulation
      Strings are actually arrays of characters. As such, they can be manipulated as vector/matrices.
  - 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, which may be simple or complex.
  - 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.
  - Plotting and Visualization
    Create 2D and 3D plots and control their style and appearance.
  - 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
Appendix
Get help for the optional libraries that are available in the Extension Manager.
Frequently Asked Questions
You've got questions? We've got answers!

Manipulation

Strings are actually arrays of characters. As such, they can be manipulated as vector/matrices.

Creation of strings can be achieved by direct declaration:

str1 = 'abcd'
str2 = 'efgh'

They can also be obtained by extraction or concatenation.

str3 = str1(2:3)

str3 is a string extracted from str1, made of 2 characters, bc.

str4 = [str1 str2]

str4 is a string obtained by concatenation and contains abcdefgh.

In addition, the OpenMatrix language includes a complete set of functions to manipulate strings. The functions are described in detail in the Strings chapter of the Reference Guide.