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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
| 0007478 | ParaView | (No Category) | public | 2008-08-10 19:27 | 2009-05-13 13:50 | ||||
| Reporter | Sven Buijssen | ||||||||
| Assigned To | Utkarsh Ayachit | ||||||||
| Priority | normal | Severity | feature | Reproducibility | always | ||||
| Status | closed | Resolution | won't fix | ||||||
| Platform | OS | OS Version | |||||||
| Product Version | |||||||||
| Target Version | Someday | Fixed in Version | |||||||
| Summary | 0007478: Stream Tracer with Point Source seed does often not work for 2-D data | ||||||||
| Description | Try this: * Create plane from Sources menu * Apply filter "Random vectors" * Apply filter "Stream Tracer" - set the vectors to "BrownianVectors" Result: you see nothing. * increase the number of points or the radius Result: in most cases you still see nothing. * change seed type to "line source" (default diagonal line) Result: visible stream lines. The same happens when starting with a box source and applying a slice filter first. (If you prefer to test it with "real" data, use the vtk file from bug 7395.) | ||||||||
| Tags | No tags attached. | ||||||||
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(0012982) Ken Moreland (manager) 2008-08-11 13:09 |
This is not totally unexpected behavior. The point source actually defines a set of points (by default 100) randomly placed within a sphere of a given radius. Since the target geometry is 2D, it is unlikely that any of the points placed randomly in the 3D sphere to land in the 2D plane. As the random placement in a sphere is an important feature for many (perhaps most) uses of the stream tracer, it is not clear how to "fix" this for 2D geometry. You can get around the problem by setting the radius to 0 and the number of points to 1. |
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(0015130) Utkarsh Ayachit (administrator) 2009-02-18 08:56 |
Refer to Ken's explanation. |
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(0015190) Alan Scott (manager) 2009-02-18 18:48 |
Closed. See Ken's explanation above for details. |
| Notes |
| Issue History | |||
| Date Modified | Username | Field | Change |
| 2008-08-10 19:27 | Sven Buijssen | New Issue | |
| 2008-08-11 13:09 | Ken Moreland | Note Added: 0012982 | |
| 2008-08-11 13:09 | Ken Moreland | Severity | minor => feature |
| 2008-08-11 13:09 | Ken Moreland | Category | 3.4 => Someday |
| 2009-02-18 08:56 | Utkarsh Ayachit | Note Added: 0015130 | |
| 2009-02-18 08:56 | Utkarsh Ayachit | Status | backlog => @80@ |
| 2009-02-18 08:56 | Utkarsh Ayachit | Resolution | open => won't fix |
| 2009-02-18 08:56 | Utkarsh Ayachit | Assigned To | => Utkarsh Ayachit |
| 2009-02-18 18:48 | Alan Scott | Note Added: 0015190 | |
| 2009-02-18 18:48 | Alan Scott | Status | @80@ => closed |
| 2009-05-13 13:50 | Utkarsh Ayachit | Target Version | => Someday |
| 2011-06-16 13:10 | Zack Galbreath | Category | => (No Category) |
| Issue History |
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