`FieldsContainer`#

class ansys.dpf.core.fields_container.FieldsContainer(fields_container=None, server=None)#

Bases: ansys.dpf.core.collection_base.CollectionBase[ansys.dpf.core.field.Field]

Represents a fields container, which contains fields belonging to a common result.

A fields container is a set of fields ordered by labels and IDs. Each field of the fields container has an ID for each label defining the given fields container. These IDs allow splitting the fields on any criteria.

The most common fields container has the label "time" with IDs corresponding to time sets. The label "complex", which is used in a harmonic analysis for example, allows real parts (id=0) to be separated from imaginary parts (id=1).

For more information, see the Fields container and fields documentation section.

Parameters:

fields_container (ansys.grpc.dpf.collection_pb2.Collection, ctypes.c_void_p,)
FieldsContainer – Fields container created from either a collection message or by copying an existing fields container. The default is “None``.
optional – Fields container created from either a collection message or by copying an existing fields container. The default is “None``.
server (ansys.dpf.core.server, optional) – Server with the channel connected to the remote or local instance. The default is None, in which case an attempt is made to use the global server.

Examples

Extract a displacement fields container from a transient result file.

>>> from ansys.dpf import core as dpf
>>> from ansys.dpf.core import examples
>>> transient = examples.download_transient_result()
>>> model = dpf.Model(transient)
>>> disp = model.results.displacement()
>>> disp.inputs.time_scoping.connect([1,5])
>>> fields_container = disp.outputs.fields_container()
>>> field_set_5 =fields_container.get_fields_by_time_complex_ids(5)
>>> #print(fields_container)

Create a fields container from scratch.

>>> from ansys.dpf import core as dpf
>>> fc= dpf.FieldsContainer()
>>> fc.labels =['time','complex']
>>> for i in range(0,20): #real fields
...     mscop = {"time":i+1,"complex":0}
...     fc.add_field(mscop,dpf.Field(nentities=i+10))
>>> for i in range(0,20): #imaginary fields
...     mscop = {"time":i+1,"complex":1}
...     fc.add_field(mscop,dpf.Field(nentities=i+10))

Overview#

Methods

`create_subtype`	Create a field subtype.
`get_fields_by_time_complex_ids`	Retrieve fields at a requested time ID or complex ID.
`get_field_by_time_complex_ids`	Retrieve a field at a requested time ID or complex ID.
`get_fields`	Retrieve the fields at a requested index or label space.
`get_field`	Retrieve the field at a requested index or label space.
`get_field_by_time_id`	Retrieve the complex field at a requested time.
`get_imaginary_fields`	Retrieve the complex fields at a requested time.
`get_imaginary_field`	Retrieve the complex field at a requested time.
`add_field`	Add or update a field at a requested label space.
`add_field_by_time_id`	Add or update a field at a requested time ID.
`add_imaginary_field`	Add or update an imaginary field at a requested time ID.
`select_component`	Select fields containing only the component index.
`deep_copy`	Create a deep copy of the fields container’s data (and its fields) on a given server.
`get_time_scoping`	Retrieve the time scoping containing the time sets.
`plot`	Plot the fields in the FieldsContainer for the given LabelSpace.
`animate`	Create an animation based on the Fields contained in the FieldsContainer.

Properties

time_freq_support

Time frequency support.

Attributes

entries_type

Special methods

`__time_complex_label_space__`	Return a label space dictionary mapping scoping to given id.
`__getitem__`	Retrieve the field at a requested index.
`__add__`	Add two fields or two fields containers.
`__sub__`	Subtract two fields or two fields containers.
`__pow__`	Compute element-wise field[i]^2.
`__mul__`	Multiply two fields or two fields containers.

Import detail#

from ansys.dpf.core.fields_container import FieldsContainer

Property detail#

property FieldsContainer.time_freq_support#: Time frequency support.

Attribute detail#

FieldsContainer.entries_type#

Method detail#

FieldsContainer.create_subtype(obj_by_copy)#: Create a field subtype.

FieldsContainer.get_fields_by_time_complex_ids(timeid=None, complexid=None)#

Retrieve fields at a requested time ID or complex ID.

Parameters:

timeid (int, optional) – Time ID or frequency ID, which is the one-based index of the result set.
complexid (int, optional) – Complex ID, where 1 is for imaginary and 0 is for real.

Returns:

fields – Fields corresponding to the request.

Return type:

list[Field]

Examples

Extract the fifth time set of a transient analysis.

>>> from ansys.dpf import core as dpf
>>> from ansys.dpf.core import examples
>>> transient = examples.download_transient_result()
>>> model = dpf.Model(transient)
>>> len(model.metadata.time_freq_support.time_frequencies)
35
>>> disp = model.results.displacement()
>>> disp.inputs.time_scoping.connect([1,5])
>>> fields_container = disp.outputs.fields_container()
>>> field_set_5 =fields_container.get_fields_by_time_complex_ids(5)

FieldsContainer.get_field_by_time_complex_ids(timeid=None, complexid=None)#

Retrieve a field at a requested time ID or complex ID.

An exception is raised if the number of fields matching the request is greater than one.

Parameters:

timeid (int, optional) – Time ID or frequency ID, which is the one-based index of the result set.
complexid (int, optional) – Complex ID, where 1 is for imaginary and 0 is for real.

Returns:

fields – Field corresponding to the request

Return type:

Field

Examples

Extract the fifth time set of a transient analysis.

>>> from ansys.dpf import core as dpf
>>> from ansys.dpf.core import examples
>>> transient = examples.download_transient_result()
>>> model = dpf.Model(transient)
>>> len(model.metadata.time_freq_support.time_frequencies)
35
>>> disp = model.results.displacement()
>>> disp.inputs.time_scoping.connect([1,5])
>>> fields_container = disp.outputs.fields_container()
>>> field_set_5 =fields_container.get_fields_by_time_complex_ids(5)

FieldsContainer.__time_complex_label_space__(timeid=None, complexid=None)#

Return a label space dictionary mapping scoping to given id.

Parameters:

timeid (int, optional) – time based id, by default None
complexid (int, optional) – complex id, by default None

Returns:

mapping of space type to given id.

Return type:

dict[str,int]

FieldsContainer.get_fields(label_space)#

Retrieve the fields at a requested index or label space.

Parameters:: label_space (dict[str,int]) – Scoping of the requested fields. For example, {"time": 1, "complex": 0}.
Returns:: fields – Fields corresponding to the request.
Return type:: list[Field]

Examples

>>> from ansys.dpf import core as dpf
>>> fc= dpf.FieldsContainer()
>>> fc.labels =['time','complex']
>>> #real fields
>>> for i in range(0,20):
...     mscop = {"time":i+1,"complex":0}
...     fc.add_field(mscop,dpf.Field(nentities=i+10))
>>> #imaginary fields
>>> for i in range(0,20):
...     mscop = {"time":i+1,"complex":1}
...     fc.add_field(mscop,dpf.Field(nentities=i+10))

>>> fields = fc.get_fields({"time":2})
>>> # imaginary and real fields of time 2
>>> len(fields)
2

FieldsContainer.get_field(label_space_or_index)#

Retrieve the field at a requested index or label space.

An exception is raised if the number of fields matching the request is greater than one.

Parameters:: label_space_or_index (dict[str,int], int) – Scoping of the requested fields. For example, {"time": 1, "complex": 0} or the index of the field.
Returns:: field – Field corresponding to the request.
Return type:: Field

Examples

>>> from ansys.dpf import core as dpf
>>> fc = dpf.fields_container_factory.over_time_freq_fields_container(
...     [dpf.Field(nentities=10)]
... )
>>> field = fc.get_field({"time":1})

FieldsContainer.get_field_by_time_id(timeid=None)#

Retrieve the complex field at a requested time.

Parameters:: timeid (int, optional) – Time ID, which is the one-based index of the result set.
Returns:: fields – Fields corresponding to the request.
Return type:: Field

FieldsContainer.get_imaginary_fields(timeid=None)#

Retrieve the complex fields at a requested time.

Parameters:: timeid (int, optional) – Time ID, which is the one-based index of the result set.
Returns:: fields – Fields corresponding to the request.
Return type:: list[Field]

FieldsContainer.get_imaginary_field(timeid=None)#

Retrieve the complex field at a requested time.

Parameters:: timeid (int, optional) – Time ID, which is the one-based index of the result set.
Returns:: fields – Field corresponding to the request.
Return type:: Field

FieldsContainer.__getitem__(key) → ansys.dpf.core.field.Field#

Retrieve the field at a requested index.

Parameters:: key (int) – Index.
Returns:: field – Field corresponding to the request.
Return type:: Field

FieldsContainer.add_field(label_space, field)#

Add or update a field at a requested label space.

Parameters:

label_space (dict[str,int]) – Label space of the requested field. For example, {“time”:1, “complex”:0}.
field (Field) – DPF field to add or update.

Examples

>>> from ansys.dpf import core as dpf
>>> fc= dpf.FieldsContainer()
>>> fc.labels =['time','complex']
>>> for i in range(0,20): #real fields
...     mscop = {"time":i+1,"complex":0}
...     fc.add_field(mscop,dpf.Field(nentities=i+10))
>>> for i in range(0,20): #imaginary fields
...     mscop = {"time":i+1,"complex":1}
...     fc.add_field(mscop,dpf.Field(nentities=i+10))

FieldsContainer.add_field_by_time_id(field, timeid=1)#

Add or update a field at a requested time ID.

Parameters:

field (Field) – DPF field to add or update.
timeid (int, optional) – Time ID for the requested time set. The default is 1.

FieldsContainer.add_imaginary_field(field, timeid=1)#

Add or update an imaginary field at a requested time ID.

Parameters:

field (Field) – DPF field to add or update.
timeid (int, optional) – Time ID for the requested time set. The default is 1.

FieldsContainer.select_component(index)#

Select fields containing only the component index.

Fields can be selected only by component index as multiple fields may contain a different number of components.

Parameters:: index (int) – Index of the component.
Returns:: fields – Fields container with one component selected in each field.
Return type:: FieldsContainer

Examples

Select using a component index.

>>> from ansys.dpf import core as dpf
>>> from ansys.dpf.core import examples
>>> transient = examples.download_transient_result()
>>> model = dpf.Model(transient)
>>> disp = model.results.displacement()
>>> disp.inputs.time_scoping.connect([1,5])
>>> fields_container = disp.outputs.fields_container()
>>> disp_x_fields = fields_container.select_component(0)
>>> my_field = disp_x_fields[0]

FieldsContainer.deep_copy(server=None)#

Create a deep copy of the fields container’s data (and its fields) on a given server.

This method is useful for passing data from one server instance to another.

Parameters:: server (ansys.dpf.core.server, optional) – Server with the channel connected to the remote or local instance. The default is None, in which case an attempt is made to use the global server.
Returns:: fields_container_copy
Return type:: FieldsContainer

Examples

>>> from ansys.dpf import core as dpf
>>> from ansys.dpf.core import examples
>>> transient = examples.download_transient_result()
>>> model = dpf.Model(transient)
>>> disp = model.results.displacement()
>>> disp.inputs.time_scoping.connect([1,5])
>>> fields_container = disp.outputs.fields_container()
>>> other_server = dpf.start_local_server(as_global=False)
>>> deep_copy = fields_container.deep_copy(server=other_server)

FieldsContainer.get_time_scoping()#

Retrieve the time scoping containing the time sets.

Returns:: scoping – Scoping containing the time set IDs available in the fields container.
Return type:: Scoping

FieldsContainer.plot(label_space: dict = None, **kwargs)#

Plot the fields in the FieldsContainer for the given LabelSpace.

Check the labels available for the FieldsContainer with labels().

Parameters:

label_space – A dictionary (LabelSpace) of labels of the FieldsContainer with associated values to select for plotting. This is used to filter the data to plot, for example: - if label_space={'time': 10}: a single time step (mandatory for transient) - if label_space={'complex': 0, 'part': 12}: real part of complex data for a part See get_fields(). If None is given, it renders all fields available, which may not make sense.
**kwargs – For more information on accepted keyword arguments, see plot() and DpfPlotter.

FieldsContainer.animate(save_as=None, deform_by=None, scale_factor=1.0, **kwargs)#

Create an animation based on the Fields contained in the FieldsContainer.

This method creates a movie or a gif based on the time ids of a FieldsContainer. For kwargs see pyvista.Plotter.open_movie/add_text/show.

Parameters:

save_as (Path of file to save the animation to. Defaults to None. Can be of any format) – supported by pyvista.Plotter.write_frame (.gif, .mp4, …).
deform_by (FieldsContainer, Result, Operator, optional) – Used to deform the plotted mesh. Must return a FieldsContainer of the same length as self, containing 3D vector Fields of distances. Defaults to None, which takes self if possible. Set as False to force static animation.
scale_factor (float, list, optional) – Scale factor to apply when warping the mesh. Defaults to 1.0. Can be a list to make scaling frequency-dependent.

FieldsContainer.__add__(fields_b)#

Add two fields or two fields containers.

Returns:: add
Return type:: operators.math.add_fc

FieldsContainer.__sub__(fields_b)#

Subtract two fields or two fields containers.

Returns:: minus
Return type:: operators.math.minus_fc

FieldsContainer.__pow__(value)#: Compute element-wise field[i]^2.

FieldsContainer.__mul__(value)#

Multiply two fields or two fields containers.

Returns:: mul
Return type:: operators.math.generalized_inner_product_fc

FieldsContainer#

Overview#

Import detail#

Property detail#

Attribute detail#

Method detail#

`FieldsContainer`#