Home
API, Reference Guides
Overview of external readers and the Altair Binary Format, the generic ASCII reader, running applications in batch mode, using Tcl/Tk commands, translators, and result math.
Tcl/Tk Commands
The application's scripting interface is a set of Tcl/Tk commands that follow a simple and consistent syntax.
Tcl/Tk Commands
Tcl/Tk classes for the following Altair HyperWorks applications.
HyperView
poICFD Class
poICFD GetStreamLineDecimation
Returns whether decimation is being applied to streamlines in the CFD Plot/Streamlines panel, in order to reduce the memory footprint.

Welcome
What's New
View new features for version 2024.1.
Get Started
Learn the basics and discover the workspace.
Tutorials
Discover product functionality with interactive tutorials.
API, Reference Guides
Overview of external readers and the Altair Binary Format, the generic ASCII reader, running applications in batch mode, using Tcl/Tk commands, translators, and result math.
- Extensions
  Extensions are programs integrated with the application to enhance or extend the user experience.
- External Readers and Altair Binary Format
  Altair Binary Format (ABF) is the standard binary format read by the program. A library called abflib allows you to create files in ABF.
- Generic ASCII Reader
  A generic ASCII reader is now available which allows you to bring custom results directly into HyperView. The Altair ASCII format is useful for reading the results of any in-house or propriety codes which are saved in a generic format.
- Batch Mode
  Batch mode allows you perform a series of operations outside the program interface.
- External Resources
  External resources can be registered in preference files, session files, or Templex files. If an external resource is registered in a program session, it is automatically registered in the session file when the session is saved.
- Python API
  The Python API documentation for HyperMesh applications.
- Tcl/Tk Commands
  The application's scripting interface is a set of Tcl/Tk commands that follow a simple and consistent syntax.
  - Program with APIs for Beginners
    APIs can be used to perform various actions in an application. For example, the AddPage API can be used to add a page within the project.
  - Object Hierarchy
    Overview of object hierarchy for HyperView, HyperGraph, HyperMesh, MotionView, MediaView and TextView.
  - Tcl/Tk Classes
    Links to the introductory pages for the Tcl/Tk commands that can be used in HyperView, MotionView, HyperGraph, HyperGraph 3D, TextView and MediaView.
  - Script Use Cases
    Examples of script uses cases.
  - Tcl/Tk Example
    Learn more about Tcl/Tk with this basic example.
  - Program with Tcl/Tk Command Tutorials
    Learn more about programming with Tcl/Tk commands with this tutorial.
  - Tcl/Tk Commands
    Tcl/Tk classes for the following Altair HyperWorks applications.
    - Framework
    - MotionView
    - HyperView
      - Hotspot Finder API Structure
      - HyperView - MultiCore APIs
      - poI3DViewCtrl Class
      - poIAdvancedQuery Class
      - poIAssembly Class
      - poIBestView Class
      - poICFD Class
        poICFD AddRake
        Adds a new rake to the CFD Plot/Streamlines panel.
        poICFD CreateStreamLines
        Creates streamlines for the specified rakes based on the current settings in the CFD Plot/Streamlines panel.
        poICFD DeleteRake
        Deletes the specified rake from the CFD Plot/Streamlines panel.
        poICFD DeleteStreamLines
        Deletes the streamlines for the rakes specified in the CFD Plot/Streamlines panel.
        poICFD GetDataType
        Returns the data type that was used for the streamline creation in the CFD Plot/Streamlines panel.
        poICFD GetIntegrationMethod
        Returns the integration method that was used for the streamline creation in the CFD Plot/Streamlines panel.
        poICFD GetMaxBreakAngle
        Returns the threshold value for the break angle between two neighboring streamline segments, which is used to decide if the two line segments should be merged into one, or kept untouched.
        poICFD GetMaxStepLength
        Returns the maximum integration step length in the CFD Plot/Streamlines panel.
        poICFD GetNumOfStreamLineColors
        Returns the number of colors in the color map that were used to color the individual streamlines in the CFD Plot/Streamlines panel (when the 'color-by mode' is set to "seed").
        poICFD GetRakeHandle
        Returns the handle of the rake specified by the rake_id.
        poICFD GetRakeList
        Returns a list of rake IDs from the CFD Plot/Streamlines panel.
        poICFD GetStreamLineColoredByMode
        Returns the 'colored-by mode' of the streamlines in the CFD Plot/Streamlines panel.
        poICFD GetStreamLineDecimation
        Returns whether decimation is being applied to streamlines in the CFD Plot/Streamlines panel, in order to reduce the memory footprint.
        poICFD GetStreamLineSize
        Returns the size of the streamlines in the CFD Plot/Streamlines panel.
        poICFD GetStreamLineStyle
        Returns the style of the streamlines in the CFD Plot/Streamlines panel.
        poICFD SetDataType
        Sets the data type used for the streamline creation in the CFD Plot/Streamlines panel.
        poICFD SetIntegrationMethod
        Specifies the integration algorithm used for the streamline creation in the CFD Plot/Streamlines panel.
        poICFD SetMaxBreakAngle
        Specifies the threshold value for the break angle between two neighboring streamline segments, which is used to decide if the two line segments should be merged into one, or kept untouched.
        poICFD SetMaxStepLength
        Specifies the maximum integration step length in the CFD Plot/Streamlines panel.
        poICFD SetNumOfStreamLineColors
        Specifies the number of colors in the color map used to color the individual streamlines in the CFD Plot/Streamlines panel (when the 'color-by mode' is set to "seed").
        poICFD SetStreamLineColoredByMode
        Specifies the 'colored-by mode' of the streamlines in the CFD Plot/Streamlines panel.
        poICFD SetStreamLineDecimation
        Specifies whether decimation should be applied to the streamlines in the CFD Plot/Streamlines panel, in order to reduce the memory footprint.
        poICFD SetStreamLineSize
        Specifies the size of the streamlines in the CFD Plot/Streamlines panel.
        poICFD SetStreamLineStyle
        Specifies the style of the streamlines in the CFD Plot/Streamlines panel.
        poICFD SetTerminationCriterion
        Specifies the criterion for integration termination in the streamline creation in the CFD Plot/Streamlines panel.
      - poICFD_rake Class
      - poICollisionCtrl Class
      - poICollisionSet Class
      - poIComplexCtrl Class
      - poIComponent Class
      - poIContourCtrl Class
      - poICrossSectionPlanar Class
      - poICrossSectionSet Class
      - poIExplosion Class
      - poIFBDCtrl Class
      - poIFLDCtrl Class
      - poIGraphicMaterial Class
      - poIImagePlaneCtrl Class
      - poIImagePlane Class
      - poIIsoValueCtrl Class
      - poILayerFilter Class
      - poILegend Class
      - poIMeasure Class
      - poIModel Class
      - poINote Class
      - poIPart Class
      - poIPartAssembly Class
      - poIPartSet Class
      - poIPost Class
      - poIPostManager Class
      - poIQueryCtrl Class
      - poIQueryDistanceRule Class
      - poIQueryExpressionRule Class
      - poIQueryExtremeRule Class
      - poIQueryIgnoreElemTypeRule Class
      - poIQueryIterator Class
      - poIQueryRule Class
      - poIQuerySetRule Class
      - poIRenderOptions Class
      - poIResultCtrl Class
      - poIResultMathCtrl Class
      - poIScalarDefine Class
      - poIScaleCtrl Class
      - poISCL Class
      - poISection Class
      - poISelectionSet Class
      - poIStressLinearizationCtrl Class
      - poISubcase Class
      - poISweepCtrl Class
      - poISymmetry Class
      - poISystem Class
      - poISystemCtrl Class
      - poITensorCtrl Class
      - poITensorDefine Class
      - poITextAttribute Class
      - poITracingCtrl Class
      - poITrackingSystem Class
      - poIVectorCtrl Class
      - poIVectorDefine Class
    - HyperGraph 2D
    - HyperGraph 3D
    - MediaView
    - TextView
    - HgTrans
    - TableView
    - Postquery Commands
    - Context Commands
    - Framework Commands
- Translators
  Translators are utilities that are run from the command line of the operating system to convert various types of files into different formats.
- Result Math
  XML commands in the Result Math Module.
- HWC Console
  Record playback workflows in the application.
- HyperMesh Report
- Task Manager
  Use the Task Manager to load an XML file that defines tasks and their attributes.
- HyperMesh
- MotionView
- Templex and Math Reference Guide
- Script and Model Library
  The Script and Model Library is a database of freely accessible scripts and models posted by users and Altair engineers.

View All Altair HyperWorks Help

poICFD GetStreamLineDecimation

Returns whether decimation is being applied to streamlines in the CFD Plot/Streamlines panel, in order to reduce the memory footprint.

Syntax

poICFD_handle GetStreamLineDecimation

Application

HyperView Tcl Query

Description

This command returns the setting specifying whether or not decimation is being applied to the streamlines obtained by the integration process. Decimation will effectively reduce the memory footprint and improve graphic performance afterwards, however it is important to note that the streamlines could become less smooth and decimation process itself takes some time.

Example

To get the streamline decimation settings:

hwi OpenStack
hwi GetSessionHandle session_handle
session_handle GetProjectHandle project_handle
project_handle GetPageHandle page_handle [project_handle GetActivePage]
page_handle GetWindowHandle window_handle [page_handle GetActiveWindow]
window_handle GetClientHandle client_handle
client_handle GetModelHandle model_handle [client_handle GetActiveModel]
model_handle GetResultCtrlHandle result_handle
result_handle GetCFDCtrlHandle CFD_handle
CFD_handle GetStreamLineDecimation
hwi CloseStack

Error

Returns false if no integrator exists.