paraview.simple.MergeBlocks(*input, **params)

Merge Blocks appends all vtkDataSet leaves of the input composite dataset to a single unstructured grid (or polydata if all leaves are polydata). The subtree to be combined can be chosen using the SubTreeCompositeIndex. If the SubTreeCompositeIndex is a leaf node, then no appending is required nor performed.

Data Descriptors


Set the input composite dataset.


When set, only paritions and pieces will be merged into a dataset each, instead of merging everything into a single dataset.


Merge points within a distance specified by the **Tolerance** property.


Determines the output type produced by this filter. Only blocks compatible with the output type will be merged in the output. For example, if the output type is “Polygonal Mesh”, then blocks of type “Image Data”, “Structured Grid”, etc. will not be merged. If the output type is “UnstructuredGrid”, then blocks of any type will be merged in the output. Defaults to “Unstructured Grid”.


Set the tolerance for merging points if **Merge Points** is enabled.


This property determines whether to treat the **Tolerance** property as absolute (points closer than Tolerance are merged) or relative (points closer than a fraction of the input data’s bounding box diagonal length) when performing point merging.

Data Descriptors inherited from Proxy


dictionary for instance variables (if defined)


list of weak references to the object (if defined)


Initialize = aInitialize(self, connection=None, update=True)

Methods inherited from SourceProxy


Called when the filename of a source proxy is changed.


Returns the associated cell data information.

GetDataInformation(self, idx=None)

This method returns a DataInformation wrapper around a vtkPVDataInformation


Returns the associated cell data information.


Returns the associated point data information.

UpdatePipeline(self, time=None)

This method updates the server-side VTK pipeline and the associated data information. Make sure to update a source to validate the output meta-data.


This method updates the meta-data of the server-side VTK pipeline and the associated information properties

__getitem__(self, idx)

Given a slice, int or string, returns the corresponding output port

Methods inherited from Proxy

GetProperty(self, name)

Given a property name, returns the property object.

GetPropertyValue(self, name)

Returns a scalar for properties with 1 elements, the property itself for vectors.

InitializeFromProxy(self, aProxy, update=True)

Constructor. Assigns proxy to self.SMProxy, updates the server object as well as register the proxy in _pyproxies dictionary.


Returns a list of all property names on this proxy.

SetPropertyWithName(self, pname, arg)

Generic method for setting the value of a property.


Destructor. Cleans up all observers as well as remove the proxy from the _pyproxies dictionary

__eq__(self, other)

Returns true if the underlying SMProxies are the same.

__getattr__(self, name)

With the exception of a few overloaded methods, returns the SMProxy method


Return hash(self).

__init__(self, **args)

Default constructor. It can be used to initialize properties by passing keyword arguments where the key is the name of the property. In addition registrationGroup and registrationName (optional) can be specified (as keyword arguments) to automatically register the proxy with the proxy manager.


Creates an iterator for the properties.

__ne__(self, other)

Returns false if the underlying SMProxies are the same.

__setattr__(self, name, value)

Implement setattr(self, name, value).

add_attribute(self, name, value)

For the full list of servermanager proxies, please refer to Available readers, sources, writers, filters and animation cues