# Stream Lines too short / Tetrahedralize doesnt seem to work
**URL:** https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172
**Category:** ParaView Support
**Created:** [May 7, 2021, 3:07pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172 "2021-05-07T15:07:16Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@coreman](https://discourse.paraview.org/u/coreman)
#### Post date: [May 7, 2021, 3:07pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/1 "2021-05-07T15:07:16Z")
Hi there, I’m trying to produce some magnetic field lines, similar to the ones on this picture:
Obviously I cant really achieve such a wholesome picture:P but for starters I want to achieve the same lenght on magnetic lines, and I think I have the same kind of data (Basically the same simulation code: bhac).
Now, here is the list of Filters. (Ignore the Clip 1, its deactivated whatesoever). I show what I properties added to stream\_tracer. But as you can see the lines are “cut” in short way.
I have seen somewhere that Adding Tetrahedralize filter fixes the problem, but If I add it, it crushes.
Even if I add it “manually” on python script, and run it on server. I still get some kind of bad results, although im not completely sure if the steamline is cut or going “downside” of the disk.
Maybe you have some kind of tip to achieve streamlines like the 1st picture?
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 10, 2021, 7:27am UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/2 "2021-05-10T07:27:23Z")
Can you share your .vtu file ?
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### Author:  [@coreman](https://discourse.paraview.org/u/coreman)
#### Post date: [May 10, 2021, 9:54am UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/3 "2021-05-10T09:54:05Z")
Is there a platform to upload the file? You guys use any certain website? (because its large enough, so It will take take, not to choose the wrong upload platform)
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 10, 2021, 9:57am UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/4 "2021-05-10T09:57:43Z")
You can use wetransfer
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### Author:  [@coreman](https://discourse.paraview.org/u/coreman)
#### Post date: [May 10, 2021, 6:07pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/5 "2021-05-10T18:07:09Z")
Sorry for the delay. I uploaded a shortcut (0.8 GB) cuz the original is \>2 GB.
Thank you for your time in advance!
> **[190.vtu](https://wetransfer.com/downloads/b67475c54777090c418566335bf8c29420210510175516/b75cea)**
>
> 1 file sent via WeTransfer, the simplest way to send your files around the world
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### Author:  [@coreman](https://discourse.paraview.org/u/coreman)
#### Post date: [May 12, 2021, 2:27pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/6 "2021-05-12T14:27:25Z")
Have I done something wrong with the upload?
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 12, 2021, 3:52pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/7 "2021-05-12T15:52:47Z")
Your dataset has many topological issues has you can see here:
You can fix some of them using CleanToGrid filter, but you should fix your mesh generation.
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### Author:  [@coreman](https://discourse.paraview.org/u/coreman)
#### Post date: [May 12, 2021, 4:16pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/8 "2021-05-12T16:16:19Z")
Whats the problem with that? I will try that filter btw
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 14, 2021, 8:18am UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/9 "2021-05-14T08:18:38Z")
Basically, your cells are not considered to be neighbour as they do not have points in common.
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### Author:  [@coreman](https://discourse.paraview.org/u/coreman)
#### Post date: [May 14, 2021, 3:13pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/10 "2021-05-14T15:13:23Z")
But I use Cell to Point Data filter before Tetra. Isnt that efficient?
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 14, 2021, 3:27pm UTC](https://discourse.paraview.org/t/stream-lines-too-short-tetrahedralize-doesnt-seem-to-work/7172/11 "2021-05-14T15:27:17Z")
unrelated. your dataset has topological errors.