Python Result: select time step, named selection, and direction

Pernelle Marone-Hitz

Do you have an example of Python Result where the user can select:

• the display time
• a named selection on which to calculate and plot the result
• the direction of the deformation to be evaluated and plotted
  ?

Pernelle Marone-Hitz

Here's an example.
The Property Provider is edited to define:

• three user inputs:

  • the direction of the deformation (drop-down menu)
  • the display time (provide a float or int)
  • a named selection (drop-down menu)

• two parametrizable outputs:

  • the mean value of the plot
  • the max value of the plot

def reload_props():
    this.PropertyProvider = None
    provider = Provider()
    group = provider.AddGroup("My Properties")
    # Select component for plotting directional deformation
    direction_prop = group.AddProperty("Directional deformation", Control.Options)
    direction_prop.Options = {0: 'UX', 1: 'UY', 2: 'UZ'}
    # Define time for postprocessing
    time_prop = group.AddProperty("Display Time", Control.Double)
    # DropDown to select a named selection
    selection_prop = group.AddProperty("Named selection", Control.Options)
    # Retrieve all named selections and fill the dropdown with the list of named selections
    all_named_sel=DataModel.GetObjectsByType(DataModelObjectCategory.NamedSelection)
    ns_list={}
    idx=1
    for ns in all_named_sel:
        ns_list[idx]=ns.Name
        idx+=1
    selection_prop.Options = ns_list

    # Second group for some results
    group2 = provider.AddGroup("My Results")
    # Mean value
    mean_prop = group2.AddProperty("Mean value", Control.Double)
    mean_prop.ParameterType = ParameterType.Output
    mean_prop.CanParameterize = True
    # Maximum value
    max_prop = group2.AddProperty("Maximum value", Control.Double)
    max_prop.ParameterType = ParameterType.Output
    max_prop.CanParameterize = True

    # Connects the provider instance back to the object by setting the PropertyProvider member on this, 'this' being the 
    # current instance of the Python Code object.
    this.PropertyProvider = provider

As for the script itself, it should be as follows:

def define_dpf_workflow(analysis):

    # Import library and reference DataSources
    import mech_dpf
    import Ans.DataProcessing as dpf
    mech_dpf.setExtAPI(ExtAPI)
    dataSources = dpf.DataSources(analysis.ResultFileName)

    #Retrieve properties
    direction = this.GetCustomPropertyByPath("My Properties/Directional deformation").ValueString
    time = float(this.GetCustomPropertyByPath("My Properties/Display Time").Value)
    selection_name = this.GetCustomPropertyByPath("My Properties/Named selection").ValueString

    # Get selection corresponding to user choice
    if selection_name!='':
        scoping_op=dpf.operators.scoping.on_named_selection(data_sources=dataSources,named_selection_name=selection_name.ToUpper())
        scoping=scoping_op.outputs.getmesh_scoping()


    # Get deformation with scoping choices defined by the user
    u = dpf.operators.result.displacement()
    u.inputs.data_sources.Connect(dataSources)
    u.inputs.mesh_scoping.Connect(scoping)
    u.inputs.time_scoping.Connect(time)

    # Get component
    direction_map = {'UX': 0, 'UY': 1, 'UZ': 2}
    comp_int = direction_map.get(direction.upper(), None)
    component = dpf.operators.logic.component_selector()
    component.inputs.field.Connect(u)
    component.inputs.component_number.Connect(comp_int)
    component.inputs.default_value.Connect(1)
    component.outputs.field.GetData()

    # Set output results
    max=dpf.operators.min_max.min_max(component)
    maxval=max.outputs.getfield_max().Data[0]
    cpmdata=component.outputs.field.GetData().Data
    mean=sum(list(cpmdata))/len(cpmdata)
    this.GetCustomPropertyByPath("My Results/Mean value").Value=mean
    this.GetCustomPropertyByPath("My Results/Maximum value").Value=maxval

    # Set plot
    dpf_workflow = dpf.Workflow()
    dpf_workflow.Add(component)
    dpf_workflow.SetOutputContour(component)
    dpf_workflow.Record('wf_id', False)
    this.WorkflowId = dpf_workflow.GetRecordedId()