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User Guide
Learn about the features and functionality available in Compose.
Invoke Compose
Run the software using console, GUI, batch and start-up file methods.
Run in Console Mode
Opening Compose in Console mode provides a shell where Compose OML language commands can be entered at the prompt.

Welcome
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
Learn about the features and functionality available in Compose.
- Invoke Compose
  Run the software using console, GUI, batch and start-up file methods.
  - Run in Console Mode
    Opening Compose in Console mode provides a shell where Compose OML language commands can be entered at the prompt.
    - Console Execution
    - Console Mode Start Options
  - Run in GUI Mode
    GUI mode provides access to all editorial, execution, and management features of the Integrated Development Environment (IDE).
  - Run in Batch Mode
    In batch mode, a language command or script is passed as an argument to be executed in batch mode (no GUI, no window) by the interpreters supported by Compose.
  - Run Compose Light
    Use the Compose Light mode when you want to work within a customized GUI without the display of the entire Compose interface.
  - User Start-Up File
    Invoke Compose with a user-defined start-up file.
- Languages and IDE
  Learn about the supported languages and utilities for coding in Compose.
- Edit Scripts
  Learn how to open, create, and close scripts.
- Run Scripts
  Click Run to execute a script.
- Profile Scripts
  Run files and profile them at the same time.
- Create Plots
  In Compose, you can create 2-D and 3-D plots using OML plotting commands.
- Edit Properties of Plots
  In Compose, you can edit the properties of plots created with OML plotting commands.
- Debug Code
  Use the Debugger to find errors in the script.
- Compose Notebook
  The Compose Notebook is a web-based implementation of Compose’s OpenMatrix Language (OML) into a Jupyter Notebook. Notebooks (see www.jupyter.org) are a powerful way to execute and demonstrate scripted languages.
- Graphical User Interfaces
  Learn about the methods, functions and file input and output options for creating a GUI.
- CAE Applications
- HDF5 Viewer
  Use the HDF5 Viewer to import data and navigate through the hierarchy of .hdf5 files.
- MAT Explorer
  Use the MAT Explorer interface to explore and load variables from one or more .MAT files, providing a visual way to see the contents of selected .MAT files and to import variables into an OML session.
- Signal Viewer
  Use the Signal Viewer to import and treat (basic) signals in both time and frequency domains, as well as generate signals based on the most common waveforms such as step, chirp and sawtooth.
- Plot Assistant
  Use the Plot Assistant to create plots from the various 2D and 3D OML plot types.
- Extension Manager
  Use the Extension Manager to create custom extensions, load extensions automatically, and add custom documentation for defined features.
- OML Functions in HyperWorks Products
  OML functions can be registered from the Compose graphical user interface or via a preference file and later opened in certain HyperWorks products.
- OML Libraries
  Additional libraries can be written in the C/C++ or Fortran language and interfaced with OML.
Reference Guides
Reference guides are available for functions and commands supported by OML, Tcl, and Python.
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!

Run Compose in Console Mode

Opening Compose in Console mode provides a shell where Compose OML language commands can be entered at the prompt.

Complete the step depending on your situation.

For this setup	Do the following
Windows PC	Invoke the Compose Console via All Programs > Altair 2024 > Compose 2024 Console.
DOS Prompt on a PC	Run the following command: <install dir>\Compose_Console.bat or this command: <install dir>\hwx\bin\win64\ExecWinEnvComp.exe -cfg -kc -ef Comp.env -aa 0 -ex ExecMainComp.exe –toolbox -continue
Linux Shell	<install dir>/scripts/Compose_Console

For this setup

Do the following

Windows PC

Invoke the Compose Console via All Programs > Altair 2024 > Compose 2024 Console.

DOS Prompt on a PC

Run the following command:

<install dir>\Compose_Console.bat

or this command:

<install dir>\hwx\bin\win64\ExecWinEnvComp.exe -cfg -kc -ef Comp.env -aa 0 -ex ExecMainComp.exe –toolbox -continue

Linux Shell

<install dir>/scripts/Compose_Console

You can run the Console application without arguments to open it.

In this mode, all OML Language features are exposed. However, every command related to the graphic windows (plotting, GUI, readvectorbuilder, and so on) is ignored.

You can use the -withgui argument to enable the plotting and GUI commands.