PiecewiseBilinear

Interpolates values from a csv file

Description

The PiecewiseBilinear function reads a csv file and interpolates values based on the data in the file. The interpolation is based on x-y pairs. If axis is given, time is used as the y index. Either xaxis or yaxis or both may be given. Time is used as the other index if one of them is not given. If radius is given, xaxis and yaxis are used to orient a cylindrical coordinate system, and the x-y pair used in the query will be the radial coordinate and time.

The csv file data_file format expected is:

  • first line holds the x values.

  • each subsequent line holds the y value then the list of z values for this y and all values of x.

The csv file data_file may be substituted by specifying the x, y and z parameters.

Example Input Syntax

[Functions]

  [./u]
    type = PiecewiseBilinear
    #x = '0 1 3' # Testing this error
    y = '0 1 3'
    z = '0 0 0 0 1 3 0 5 7'
    axis = 0 # End Functions
  [../]
[]
(test/tests/utils/2d_linear_interpolation/xyz_error.i)

Input Parameters

  • axis-1The axis used (0, 1, or 2 for x, y, or z).

    Default:-1

    C++ Type:int

    Controllable:No

    Description:The axis used (0, 1, or 2 for x, y, or z).

  • data_fileFile holding csv data for use with PiecewiseBilinear

    C++ Type:FileName

    Controllable:No

    Description:File holding csv data for use with PiecewiseBilinear

  • execute_onLINEARThe list of flag(s) indicating when this object should be executed, the available options include FORWARD, ADJOINT, HOMOGENEOUS_FORWARD, ADJOINT_TIMESTEP_BEGIN, ADJOINT_TIMESTEP_END, NONE, INITIAL, LINEAR, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM.

    Default:LINEAR

    C++ Type:ExecFlagEnum

    Options:FORWARD, ADJOINT, HOMOGENEOUS_FORWARD, ADJOINT_TIMESTEP_BEGIN, ADJOINT_TIMESTEP_END, NONE, INITIAL, LINEAR, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM

    Controllable:No

    Description:The list of flag(s) indicating when this object should be executed, the available options include FORWARD, ADJOINT, HOMOGENEOUS_FORWARD, ADJOINT_TIMESTEP_BEGIN, ADJOINT_TIMESTEP_END, NONE, INITIAL, LINEAR, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM.

  • radialFalseSet to true if you want to interpolate along a radius rather that along a specific axis, and note that you have to define xaxis and yaxis in the input file

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Set to true if you want to interpolate along a radius rather that along a specific axis, and note that you have to define xaxis and yaxis in the input file

  • scale_factor1Scale factor to be applied to the axis, yaxis, or xaxis values

    Default:1

    C++ Type:double

    Controllable:No

    Description:Scale factor to be applied to the axis, yaxis, or xaxis values

  • xThe x abscissa values

    C++ Type:std::vector<double>

    Controllable:No

    Description:The x abscissa values

  • xaxis-1The coordinate used for x-axis data (0, 1, or 2 for x, y, or z).

    Default:-1

    C++ Type:int

    Controllable:No

    Description:The coordinate used for x-axis data (0, 1, or 2 for x, y, or z).

  • yThe y abscissa values

    C++ Type:std::vector<double>

    Controllable:No

    Description:The y abscissa values

  • yaxis-1The coordinate used for y-axis data (0, 1, or 2 for x, y, or z).

    Default:-1

    C++ Type:int

    Controllable:No

    Description:The coordinate used for y-axis data (0, 1, or 2 for x, y, or z).

  • zThe ordinate values

    C++ Type:std::vector<double>

    Controllable:No

    Description:The ordinate values

Optional Parameters

  • control_tagsAdds user-defined labels for accessing object parameters via control logic.

    C++ Type:std::vector<std::string>

    Controllable:No

    Description:Adds user-defined labels for accessing object parameters via control logic.

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Set the enabled status of the MooseObject.

Advanced Parameters

Input Files