utility:extract field
Last update: 31.07.2026Version: 0.0.0
Description
Extracts the fields at the indices defined in the vector (in 1) from the fields container (in 0). If a single index is provided, returns a field; if multiple indices are provided, returns a fields container.
Inputs
This table lists the input pins for this operator. Input pins define the data that the operator requires to perform its operation. Some inputs are required, while others are optional and provide additional configuration. Each parameter is detailed in the sections that follow the table.
| Pin number | Name | Status | Expected type(s) |
|---|---|---|---|
| 0 | fields_container | Required | field, fields_container |
| 1 | indices | vector<int32> |
fields_container (Pin 0)
- Required: Yes
- Expected type(s):
field,fields_container
Fields container or single field. If a field is provided, it is passed through as output
indices (Pin 1)
- Required: No
- Expected type(s):
vector<int32>
Indices of fields to extract. Default is [0] (first field). Single index returns a field, multiple indices return a fields container
Outputs
This table lists the output pins for this operator. Output pins provide the results of the operator's computation and can be connected to inputs of other operators or retrieved for further processing. Each output is detailed in the sections that follow the table.
| Pin number | Name | Expected type(s) |
|---|---|---|
| 0 | field | field |
field (Pin 0)
- Expected type(s):
field
Extracted field(s). Single index produces a field, multiple indices produce a fields container
Configurations
This operator supports configuration options that modify its behavior.
mutex
- Expected type(s):
bool - Default value: false
If this option is set to true, the shared memory is prevented from being simultaneously accessed by multiple threads.
Scripting
This operator can be accessed through scripting interfaces using these identifiers.
Category: utility
Plugin: core
Scripting name: extract_field
Full name: utility.extract_field
Internal name: ExtractFromFC
License: None
Examples
These examples demonstrate how to use this operator in different programming environments. Each example shows how to instantiate the operator, connect the required inputs, and retrieve the output.
C++
#include "dpf_api.h"
ansys::dpf::Operator op("ExtractFromFC"); // operator instantiation
op.connect(0, my_fields_container);
op.connect(1, my_indices);
ansys::dpf::Field my_field = op.getOutput<ansys::dpf::Field>(0);
CPython
import ansys.dpf.core as dpf
op = dpf.operators.utility.extract_field() # operator instantiation
op.inputs.fields_container.connect(my_fields_container)
op.inputs.indices.connect(my_indices)
my_field = op.outputs.field()
IPython
import mech_dpf
import Ans.DataProcessing as dpf
op = dpf.operators.utility.extract_field() # operator instantiation
op.inputs.fields_container.Connect(my_fields_container)
op.inputs.indices.Connect(my_indices)
my_field = op.outputs.field.GetData()
Changelog
- Version 0.0.0: Initial release.