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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
| 0001205 | ParaView | (No Category) | public | 2004-09-24 15:13 | 2009-12-09 14:51 | ||||
| Reporter | Mathieu Malaterre | ||||||||
| Assigned To | Mathieu Malaterre | ||||||||
| Priority | normal | Severity | major | Reproducibility | unable to reproduce | ||||
| Status | closed | Resolution | unable to reproduce | ||||||
| Platform | OS | OS Version | |||||||
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| Target Version | Fixed in Version | ||||||||
| Summary | 0001205: JA: Isosurface might be interpolating wrong | ||||||||
| Description | Isosurface gives wrong results in the case of large range and unsigned int dataset. | ||||||||
| Tags | No tags attached. | ||||||||
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(0001504) Mathieu Malaterre (reporter) 2004-09-28 09:43 |
Jim, Using this script I can generate an unsigned int dataset with a large scalar range: package require vtk vtkImageReader reader reader SetDataByteOrderToLittleEndian reader SetDataExtent 0 63 0 63 1 93 reader SetDataSpacing 3.2 3.2 1.5 reader SetFilePrefix "$VTK_DATA_ROOT/Data/headsq/quarter" reader SetDataMask 0x7fff reader Update # = 0 3926 puts [[reader GetOutput] GetScalarRange] vtkImageShiftScale shift shift SetInput [reader GetOutput] # Shift data so that it is outside of the 'int' representation: # 2147483647 = 2^31 - 1 # So we need to shift from 2147483647 - 3926 / 2 = 2147481684 #shift SetShift 2147481684 shift SetShift 1000 # Now if we want a large scalar range: # 2147483647/3926 = 546990 # So let's try 546990 + 1 = 546991 #shift SetScale 546991 shift SetScale 606991 shift SetOutputScalarTypeToUnsignedInt shift Update # 6.06991e+08 2.99004e+09 puts [[shift GetOutput] GetScalarRange] vtkImageWriter writer writer SetInput [shift GetOutput] writer SetFileName "shift2.raw" writer SetFileDimensionality 3 writer Write vtkStructuredPointsWriter swriter swriter SetInput [shift GetOutput] swriter SetFileName "shift3.vtk" swriter Write Loading this data in ParaView does not shows any artefact (for contour, cut, clip), and the scalar range for this data is: 606991000 2990040000 Do you know which filter fails, with what kind of scalar range ? Thanks |
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(0002537) Amy Squillacote (reporter) 2005-06-21 16:49 |
Jim, Is this still an issue? |
| Notes |
| Issue History | |||
| Date Modified | Username | Field | Change |
| 2009-12-09 14:51 | Berk Geveci | Project | @3@ => ParaView |
| 2011-06-16 13:09 | Zack Galbreath | Category | => (No Category) |
| Issue History |
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