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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.
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Tcl/Tk classes for the following Altair HyperWorks applications.
HgTrans
HgTrans Config Class
hgtrans config GetChannelOverrideExpression
Gets whether and how a data channel has been marked for recompution and how.

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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
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  - Tcl/Tk Commands
    Tcl/Tk classes for the following Altair HyperWorks applications.
    - Framework
    - MotionView
    - HyperView
    - HyperGraph 2D
    - HyperGraph 3D
    - MediaView
    - TextView
    - HgTrans
      - HgTrans Config Class
        hgtrans config ClearChannels
        Marks all channels to be skipped during translation.
        hgtrans config GetChannelOverrideExpression
        Gets whether and how a data channel has been marked for recompution and how.
        hgtrans config GetChannelSelected
        Gets whether a data channel is marked for translation.
        hgtrans config SetAllChannelsSelected
        Marks all channels for translation.
        hgtrans config SetChannelOverride
        Marks a data channel for recomputation prior to being written out.
        hgtrans config SetChannelSelected
        Marks a data channel for translation.
      - HgTrans Control Class
      - HgTrans Result Class
    - TableView
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- Templex and Math Reference Guide
- Script and Model Library
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hgtrans config GetChannelOverrideExpression

Gets whether and how a data channel has been marked for recompution and how.

Syntax

hgtrans config GetChannelOverrideExpression subcase, datatype, request, component

Application

HyperGraphTrans Tcl Set

Description

This command checks whether a data channel is currently overridden with an expression and returns that expression. The expression can contain any combination of legal functions and operators. Two special variables are defined to allow access to the original channel values: “v” and “t”. The values are stored in “t” and the associated time values in “t”.

Inputs

subcase: The name of the subcase in which the channel to be override resides.
datatype: The name of the datatype in which the channel to be override resides.
request: The name of the request in which the channel to be override resides.
component: The name of the component in which the channel to be override resides.

Example

Set hgtrans to read a single channel from a file called “columns.dat” and double it, then verify the expression.

hgtrans control SetFile "columns.dat"
hgtrans control SetOutputFile "columns.abf"
hgtrans config SetChannelSelected "" "Unknown" "Res. ang acc (rad/s**2)" "column 2" true
hgtrans config SetChannelOverride "" "Unknown" "Res. ang acc (rad/s**2)" "column 2" "v * 2"
hgtrans config GetChannelOverride "" "Unknown" "Res. ang acc (rad/s**2)" "column 2"

Errors

Returns an empty string if the data channel has not been overridden.

Keywords

get channel override