2D streamline with vti look strange

[sopoyoon (sopo)]

Hi, every one!
I am a beginner to Paraview.
Could someone help me to visualize the data please?
I have vti files where 2D velocity data also in.
level_400.vti (770.3 KB)

It works well that changes of velocity and voriticy can see obviously. But when I plot the velocity streamline using Stream Tracer, it looks really odd:

Could someone hlep me some hints to get meaningful streamline around the object?

Thank you so much!
Sopo.

[mwestphal (Mathieu Westphal (Kitware))]

Looks like an issue with 2D image data. Just add a “AppendDataSet” filter that will convert to unstructured grid before your stream tracer.

[sopoyoon (sopo)]

It works well. Thank you so much