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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.
MotionView
mdlIObject Class
mdlIObject IsPair
Determines if an object is a pair entity.

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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
      - mdlIDataMember Class
      - mdlIFlexbody Class
      - mdlIModel Class
      - mdlIModelClient Class
      - mdlIObject Class
        mdlIObject AddAssembly
        Adds an assembly using an existing data file.
        mdlIObject AddAssemblyPlaceholder
        Adds an assembly placeholder.
        mdlIObject AddAttachment
        Adds an attachment to definition type entities (System, Analysis, Template, or Assembly).
        mdlIObject AddNewAssembly
        Adds a new assembly from an existing or new data and definition file.
        mdlIObject AddNewExternalSystem
        Adds a new definition type entity (System, Template, Dataset, Graphic system or Analysis).
        mdlIObject AddSystemFromDefInMemory
        Adds a system from an existing definition.
        mdlIObject AddSystemFromImportedInlinedDef
        Adds a new system from an existing definition file.
        mdlIObject AddSystemFromNewInlinedDef
        Adds a new definition type entity.
        mdlIObject AppendMdltoSystem
        Appends MDL statements to the System.
        mdlIObject BeginChildFastGet
        Obtains a list for a particular entity type and then later obtains a handle for one of its child objects.
        mdlIObject BeginFlatListFastGet
        Obtains the list of the entities present in the model based on the entity type specified.
        mdlIObject BeginReferenceFastGet
        Obtains the list of objects that reference 'the selected' object.
        mdlIObject CutObject
        Cuts the object (which is another way of deleting an entity).
        mdlIObject Delete
        Deletes an object/entity.
        mdlIObject DeleteRecord
        Deletes one or multiple table entries.
        mdlIObject DeselectAssembly
        Deselects an Assembly and converts it to an Assembly Placeholder.
        mdlIObject EndChildFastGet
        Ends the BeginChildFastGet or BeginFlatListFastGet commands.
        mdlIObject EvaluateEntityTemplate
        Creates and evaluates a temporary Templex template using the user-provided text.
        mdlIObject GetCandidateList
        Gets the list of attachment candidates which can be resolved to an attachment based on the attachment tag.
        mdlIObject GetChangeStatus
        Gets the status if there is a change in Data or Definition.
        mdlIObject GetChildHandleByIdx
        Obtains the handle of the child object using its index value.
        mdlIObject GetDefinitionName
        Gets the definition name of a definition type entity.
        mdlIObject GetDefinitionType
        Gets the definition type of an Assembly.
        mdlIObject GetFullLocalLabel
        Obtains the label of the child object.
        mdlIObject GetFullVarname
        Obtains the full variable of the child object.
        mdlIObject GetGlobalAddressFromLocalAddress
        Gets the global address from the specified local address.
        mdlIObject GetLabel
        Obtains the label of the child object.
        mdlIObject GetLinkedSystemList
        Gets the list of the systems which are linked to particular system. Linked systems can be either DATA or DEFINITION linked.
        mdlIObject GetLocalAddressFromGlobalAddress
        Gets the local address from the specified global address.
        mdlIObject GetNumberOfChildren
        Gets the number of child objects under a particular entity type.
        mdlIObject GetObjectHandle
        Obtains the handle to an object.
        mdlIObject GetObjectHandleFromSymbol
        Gets the handle of an entity using a known symbol (for example, variable name).
        mdlIObject GetParentHandle
        Gets back the parent handle from its child.
        mdlIObject GetSelectionType
        Gets the value from the 'selection_type' data member.
        mdlIObject GetSourceFile
        Obtains information about the source file for the assembly created in the model.
        mdlIObject GetState
        The state of an object depends upon three different states: “User State”, “Definable State”, and “If State”. You can only set the “User State” (the checkbox located in the upper right portion of every panel), the other two states are used by MotionView to automatically turn off certain items.
        mdlIObject GetSystemHandle
        Gets the handle to the system from anywhere in the hierarchy (after the model handle).
        mdlIObject GetType
        Gets the entity/object type.
        mdlIObject GetUserState
        Retrieves the state of an object as set by the user in the checkbox (either checked or unchecked).
        mdlIObject GetVarname
        Obtains the variable of the child object.
        mdlIObject HighlightGraphic
        Determines if a graphic under an object is highlighted or not.
        mdlIObject InsertRecord
        Deletes one or multiple table entries.
        mdlIObject InterpretEntity
        Adds a new entity using the MDL statements keyword, variable name, and label.
        mdlIObject InterpretSet
        Adds a new set statement to the system.
        mdlIObject IsAssembly
        Determines if an object is an assembly or not.
        mdlIObject IsDataMember
        Determines if the entity is a data member or not.
        mdlIObject IsDataSetData
        Determines whether or not the entity belongs to a DataSet.
        mdlIObject IsDefinition
        Determines if the entity is a definition type or not.
        mdlIObject IsEqual
        Determines if two handles point to the same object.
        mdlIObject IsGraphic
        Determines if the entity is a graphic entity.
        mdlIObject IsHalfOfPair
        Determines if an object is a half of a pair.
        mdlIObject IsImplicit
        Determines if the object is implicitly defined (that is, it was not defined explicitly by the user).
        mdlIObject IsInStandardInclude
        Determines whether the object is included in the standard include file.
        mdlIObject IsModel
        Determines if the selected entity is a model entity.
        mdlIObject IsPair
        Determines if an object is a pair entity.
        mdlIObject IsSelected
        Determines whether or not an Assembly contains a data/definition file.
        mdlIObject IsSystem
        Determines whether an entity is a system or not.
        mdlIObject IsValidChildVarname
        Determines if the specified 'varname' is valid.
        mdlIObject OutlineGraphic
        Highlights the outline of a graphic for visual identification of that particular graphic.
        mdlIObject PasteObject
        Pastes an object.
        mdlIObject ReplaceAssembly
        Replaces an existing assembly in the model with another assembly from the Suspension Library.
        mdlIObject ReplaceEntity
        Replaces an existing entity with a new entity using the class variable name from the MDF file.
        mdlIObject ReplaceEntityAdvanced
        Replaces an existing entity with a new entity using MDL statement keywords and the remaining statement tokens.
        mdlIObject SaveAll
        Saves the model.
        mdlIObject SaveAs
        Saves the model to a specified file.
        mdlIObject SaveObject
        Saves the model to a specified location.
        mdlIObject SaveOnly
        Saves the object.
        mdlIObject SelectAssembly
        Selects an existing data file for an Assembly Placeholder.
        mdlIObject SetDefinitionName
        Sets the definition name of a definition type entity.
        mdlIObject SetDefinitionType
        Sets the definition type of an Assembly or external Analysis.
        mdlIObject SetLabel
        Sets/changes the label of an object.
        mdlIObject SetSelectionType
        Sets the selection type of an Assembly or external Analysis.
        mdlIObject SetSourceFile
        Specifies a new location and file to which the current Data or Definition information will be saved to.
      - ::model Procedures
    - HyperView
    - 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

mdlIObject IsPair

Determines if an object is a pair entity.

Syntax

mdlIObject_handle IsPair

Application

MotionView Tcl Query

Description

This command determines if an object is a pair entity.

Example

To check if an object is a single or a pair entity:

Note: Load the slider_crank.mdl model file before running this example.

hwi OpenStack
hwi GetSessionHandle mySessionName 
mySessionName GetProjectHandle myProjectName 
set activePageNum [myProjectName GetActivePage]
myProjectName GetPageHandle myPageName $activePageNum
set activeWinNum [myPageName GetActiveWindow]
myPageName GetWindowHandle myWindowName $activeWinNum
myWindowName GetClientHandle myClientName 
myClientName GetModelHandle myModelName 
myModelName GetChildHandle point_handle p_conrod_cg0
point_handle IsPair
point_handle ReleaseHandle
myModelName ReleaseHandle
myClientName ReleaseHandle
myWindowName ReleaseHandle
myPageName ReleaseHandle
myProjectName ReleaseHandle
mySessionName ReleaseHandle
hwi CloseStack

Errors

Returns true if the object is a pair entity, otherwise false.