# streamline terminated at zone boundaries in "AMR" unstructured data

**URL:** https://discourse.paraview.org/t/streamline-terminated-at-zone-boundaries-in-amr-unstructured-data/4254
**Category:** ParaView Support
**Created:** [May 5, 2020, 3:39am UTC](https://discourse.paraview.org/t/streamline-terminated-at-zone-boundaries-in-amr-unstructured-data/4254 "2020-05-05T03:39:34Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![liangwang0734](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/l/3ab097/32.png) [@liangwang0734](https://discourse.paraview.org/u/liangwang0734)
#### Post date: [May 5, 2020, 3:39am UTC](https://discourse.paraview.org/t/streamline-terminated-at-zone-boundaries-in-amr-unstructured-data/4254/1 "2020-05-05T03:39:34Z")

</div>

Hi, I have a data file from an AMR simulation stored as an unstructured Hexahedron mesh xdmf + h5 files. When I do streamline tracing, the streamline terminates at boundaries of different zones with different resolutions (see my attachment; in this case my data is polar).

To trace streamline across such boundaries

- Is it possible to connect these zones?
- Do I need to convert the data into a Paraview-compatible format? What do I need to know and do?
- The last resort in my head would be to resample onto a regular mesh, hopefully, polar/spherical. I haven’t started learning about that yet, any suggestions?

Any suggestion is appreciated.

Liang

 ![streamline-broken-at-zone-boundaries](https://discourse.paraview.org/uploads/default/original/2X/4/4ffb0d1c3bf47c7cbbcca15d30477eba4a031bfc.png)

The xdmf is like

```
<Xdmf Version="2.0">
  <Domain>
    <Information Name="Description">
      Example of a Hexahedron Topology
    </Information>
    <Grid Name="Hexahedron" GridType="Uniform">
      <Topology TopologyType="Hexahedron" NumberOfElements="17790624">
        <DataItem Format="HDF" NumberType="Int" Precision="4" Dimensions="17790624 8">
        demo.h5:/connectivity
        </DataItem>
      </Topology>
      <Geometry Type="XYZ">
        <DataItem Format="HDF" NumberType="Float" Precision="4" Dimensions="18041604 3">
        demo.h5:/points
        </DataItem>
      </Geometry>
      <Attribute Name="rho" Center="Node">
        <DataItem Format="HDF" NumberType="Float" Precision="4" Dimensions="18041604">
        demo.h5:/rho
        </DataItem>
      </Attribute>
      </Attribute>
    </Grid>
  </Domain>
</Xdmf>
```