# Merge partitions of vtkPartitionedDataSet?
**URL:** https://discourse.vtk.org/t/merge-partitions-of-vtkpartitioneddataset/12469
**Category:** Support
**Created:** [October 11, 2023, 5:58pm UTC](https://discourse.vtk.org/t/merge-partitions-of-vtkpartitioneddataset/12469 "2023-10-11T17:58:04Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@rexthor](https://discourse.vtk.org/u/rexthor)
#### Post date: [October 11, 2023, 5:58pm UTC](https://discourse.vtk.org/t/merge-partitions-of-vtkpartitioneddataset/12469/1 "2023-10-11T17:58:04Z")
I have a dataset that is a vtkPartitionedDataSet composed of vtkStructuredGrid partitions. I can read the file in ParaView, and there is a “Merge Blocks” filter available in the GUI that seems to convert vtkPartitionedDataSet to vtkUnstructuredGrid …
I looked at vtkMultiBlockMergeFilter, but that wasn’t able to operate on vtkPartitionedDataSet … what filter is ParaView using to merge the partitions?
---
### Author:  [@rexthor](https://discourse.vtk.org/u/rexthor)
#### Post date: [October 11, 2023, 6:07pm UTC](https://discourse.vtk.org/t/merge-partitions-of-vtkpartitioneddataset/12469/2 "2023-10-11T18:07:54Z")
Ok - looked at ParaView source. This is how I did it:
```python
af = vtkAppendDataSets()
af.MergePointsOn()
for ind in range(partitioned_data.GetNumberOfPartitions()):
af.AddInputData(partitioned_data.GetPartition(ind))
af.Update()
ug = af.GetOutputDataObject(0)
```