  from pydpf.core import Model, ResultFile, Node, Element, Workflow, Operator

# Create a model targeting a given result file
model = Model.from_result_file("result.res")

# Get all node IDs in the model
node_ids = model.get_node_ids()

# Find the minimum amount of surrounding elements to get a minimum volume
min_elements = 10

# Read the volume by element
volumes = model.get_element_volumes()

# Find the minimum list of elements by node to get the volume check
volume_check = []
for node_id in node_ids:
    elements = model.get_elements_by_node(node_id)
    if len(elements) < min_elements:
        volume_check.append(node_id)

# Create a workflow to compute equivalent stress averaged on elements
workflow = Workflow()

# Apply dot product seqv.volume
workflow.add_operator(Operator.DOT_PRODUCT, "seqv.volume")

# Sum up those on the list of elements
workflow.add_operator(Operator.SUM)

# Divide this sum by the total volume on these elements
workflow.add_operator(Operator.DIVIDE)

# Create a plot of equivalent elemental stress and volume averaged elemental equivalent stress
workflow.add_plot(Plot.EQUIVALENT_STRESS_VOLUME_AVERAGED_ELEMENTAL_EQUIVALENT_STRESS)

# Use the operator with the same algorithm that has been implemented
workflow.add_operator(Operator.EQUIVALENT_STRESS_VOLUME_AVERAGED_ELEMENTAL_EQUIVALENT_STRESS)

# Run the workflow
workflow.run()