## On this page # math:time freq interpolation Last update: 31.07.2026 **Version: 0.0.0** ## Description Interpolates between all the matching fields of a fields container at given times or frequencies, using ramped: fieldOut = field1\*(1.-fact)+field2\*(fact), or stepped: fieldOut=field2. If the time freq is higher than the max available, the field at the max time freq is taken. Computes the output time freq support to support the 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 numberNameStatusExpected type(s)0[fields\_container](#input_0)Required[`fields_container`](../../core-concepts/dpf-types.md#fields-container)**1**[time\_freq\_values](#input_1)Required[`double`](../../core-concepts/dpf-types.md#standard-types), [`vector`](../../core-concepts/dpf-types.md#standard-types), [`field`](../../core-concepts/dpf-types.md#field)**2**[step](#input_2)[`int32`](../../core-concepts/dpf-types.md#standard-types)**3**[interpolation\_type](#input_3)[`int32`](../../core-concepts/dpf-types.md#standard-types)**4**[force\_new\_time\_freq\_support](#input_4)[`bool`](../../core-concepts/dpf-types.md#standard-types)**8**[time\_freq\_support](#input_8)[`time_freq_support`](../../core-concepts/dpf-types.md#time-freq-support) ### fields\_container (Pin 0) - **Required:** Yes - **Expected type(s):** [`fields_container`](../../core-concepts/dpf-types.md#fields-container) ### time\_freq\_values (Pin 1) - **Required:** Yes - **Expected type(s):** [`double`](../../core-concepts/dpf-types.md#standard-types), [`vector`](../../core-concepts/dpf-types.md#standard-types), [`field`](../../core-concepts/dpf-types.md#field) list of frequencies or times needed. To specify load steps, put a Field (and not a list) in input with a scoping located on "TimeFreq\_steps". ### step (Pin 2) - **Required:** No - **Expected type(s):** [`int32`](../../core-concepts/dpf-types.md#standard-types) if a Field is set as input, the step ids should be its scoping. ### interpolation\_type (Pin 3) - **Required:** No - **Expected type(s):** [`int32`](../../core-concepts/dpf-types.md#standard-types) 1 is ramped, 2 is stepped, default is 1. ### force\_new\_time\_freq\_support (Pin 4) - **Required:** No - **Expected type(s):** [`bool`](../../core-concepts/dpf-types.md#standard-types) If set to true, the output fields container will always have a new time freq support rescoped to the output time\_freq\_values (default is false). If set to false, the time freq support is only recreated when time or frequency values are between existing ones. ### time\_freq\_support (Pin 8) - **Required:** No - **Expected type(s):** [`time_freq_support`](../../core-concepts/dpf-types.md#time-freq-support) ## 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 numberNameExpected type(s)0[fields\_container](#output_0)[`fields_container`](../../core-concepts/dpf-types.md#fields-container) ### fields\_container (Pin 0) - **Expected type(s):** [`fields_container`](../../core-concepts/dpf-types.md#fields-container) FieldsContainer with interpolated fields at specified time/frequency values ## Configurations This operator supports [configuration options](../../core-concepts/operator-configurations.md) that modify its behavior. ### [mutex](../../core-concepts/operator-configurations.md#mutex) - **Expected type(s):** [`bool`](../../core-concepts/dpf-types.md#standard-types) - **Default value:** false If this option is set to true, the shared memory is prevented from being simultaneously accessed by multiple threads. ### [permissive](../../core-concepts/operator-configurations.md#permissive) - **Expected type(s):** [`bool`](../../core-concepts/dpf-types.md#standard-types) - **Default value:** false If this option is set to true, warning checks (like unit or data sizes) won't be done. ## Scripting This operator can be accessed through scripting interfaces using these identifiers. **Category**: math **Plugin**: core **Scripting name**: None **Full name**: None **Internal name**: time\_freq\_interpolation **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++```cpp #include "dpf_api.h" ansys::dpf::Operator op("time_freq_interpolation"); // operator instantiation op.connect(0, my_fields_container); op.connect(1, my_time_freq_values); op.connect(2, my_step); op.connect(3, my_interpolation_type); op.connect(4, my_force_new_time_freq_support); op.connect(8, my_time_freq_support); ansys::dpf::FieldsContainer my_fields_container = op.getOutput(0); ``` CPython```python import ansys.dpf.core as dpf op = dpf.operators.math.None() # operator instantiation op.inputs.fields_container.connect(my_fields_container) op.inputs.time_freq_values.connect(my_time_freq_values) op.inputs.step.connect(my_step) op.inputs.interpolation_type.connect(my_interpolation_type) op.inputs.force_new_time_freq_support.connect(my_force_new_time_freq_support) op.inputs.time_freq_support.connect(my_time_freq_support) my_fields_container = op.outputs.fields_container() ``` IPython```python import mech_dpf import Ans.DataProcessing as dpf op = dpf.operators.math.None() # operator instantiation op.inputs.fields_container.Connect(my_fields_container) op.inputs.time_freq_values.Connect(my_time_freq_values) op.inputs.step.Connect(my_step) op.inputs.interpolation_type.Connect(my_interpolation_type) op.inputs.force_new_time_freq_support.Connect(my_force_new_time_freq_support) op.inputs.time_freq_support.Connect(my_time_freq_support) my_fields_container = op.outputs.fields_container.GetData() ``` ## Changelog - Version 0.0.0: Initial release.