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Error in IDW interpolation with null values #43286

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cesarcorreo opened this issue May 19, 2021 · 0 comments · Fixed by #43302
Closed

Error in IDW interpolation with null values #43286

cesarcorreo opened this issue May 19, 2021 · 0 comments · Fixed by #43302
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Bug Either a bug report, or a bug fix. Let's hope for the latter! Processing Relating to QGIS Processing framework or individual Processing algorithms Regression Something which used to work, but doesn't anymore

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@cesarcorreo
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Describe the bug
Time ago I opened the BUG: https://github.com/qgis/QGIS/issues/42689 related with TIN interpolation.
Today, I realised that IDW interpolation has the same bug. The problem is null values are considered as 0 instead null.
In the screenshot the centerpoint has no value. All the others has a value = 5.
3.18.3, ERROR
3.16.5 ERROR
3.10.12 OK

IDW-BUG.zip

image
@cesarcorreo cesarcorreo added the Bug Either a bug report, or a bug fix. Let's hope for the latter! label May 19, 2021
@gioman gioman added Processing Relating to QGIS Processing framework or individual Processing algorithms Regression Something which used to work, but doesn't anymore labels May 19, 2021
@vcloarec vcloarec mentioned this issue May 20, 2021
Merged
rouault pushed a commit that referenced this issue May 29, 2021
@vcloarec
Fix qgsinterpolator and qgstininterpolator with NULL value (#43302)
2983284 
Fixes #43286, fixes #42689
rouault pushed a commit to rouault/QGIS that referenced this issue May 29, 2021
@vcloarec @rouault
Fix qgsinterpolator and qgstininterpolator with NULL value (qgis#43302)
d51b3f8 
Fixes qgis#43286, fixes qgis#42689
@rouault rouault mentioned this issue May 29, 2021
Merged
nyalldawson pushed a commit that referenced this issue May 29, 2021
@vcloarec @nyalldawson
Fix qgsinterpolator and qgstininterpolator with NULL value (#43302)
212d1f4 
Fixes #43286, fixes #42689
nyalldawson pushed a commit that referenced this issue May 31, 2021
@vcloarec @nyalldawson
Fix qgsinterpolator and qgstininterpolator with NULL value (#43302)
320740b 
Fixes #43286, fixes #42689
nyalldawson pushed a commit that referenced this issue Jun 14, 2021
@vcloarec @nyalldawson
Fix qgsinterpolator and qgstininterpolator with NULL value (#43302)
408af51 
Fixes #43286, fixes #42689
nyalldawson pushed a commit that referenced this issue Jun 21, 2021
@vcloarec @nyalldawson
Fix qgsinterpolator and qgstininterpolator with NULL value (#43302)
ceb2147 
Fixes #43286, fixes #42689
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Bug Either a bug report, or a bug fix. Let's hope for the latter! Processing Relating to QGIS Processing framework or individual Processing algorithms Regression Something which used to work, but doesn't anymore
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fix qgsinterpolator with NULL value vcloarec/QGIS
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@gioman @cesarcorreo