Bug report #12094: Processing: Raster layer histogram from QGIS algorithms throws a python error - QGIS Application - QGIS Issue Tracking

Bug report #12094

Processing: Raster layer histogram from QGIS algorithms throws a python error

Added by Filipe Dias about 9 years ago. Updated about 9 years ago.

Status:	Closed
Priority:	Normal
Assignee:	Giovanni Manghi
Category:	Processing/QGIS
Affected QGIS version:	master	Regression?:	No
Operating System:		Easy fix?:	No
Pull Request or Patch supplied:	No	Resolution:	fixed/implemented
Crashes QGIS or corrupts data:	No	Copied to github as #:	20289

Description

Algorithm Raster layer histogram starting...
unpack requires a string argument of length 38436 See log for more details

Log:

Uncaught error while executing algorithm
Traceback (most recent call last):
Traceback (most recent call last):
File "/usr/share/qgis/python/plugins/processing/core/GeoAlgorithm.py", line 234, in execute
self.processAlgorithm(progress)
File "/usr/share/qgis/python/plugins/processing/algs/qgis/RasterLayerHistogram.py", line 76, in processAlgorithm
for v in values:
File "/usr/share/qgis/python/plugins/processing/tools/raster.py", line 47, in scanraster
values = struct.unpack('f' * band.XSize, scanline)
error: unpack requires a string argument of length 38436

Related issues

History

#1 Updated by Filipe Dias about 9 years ago

Raster layer statistics is affected by the same error.

#2 Updated by Giovanni Manghi about 9 years ago

Affected QGIS version changed from 2.6.0 to master
Priority changed from Severe/Regression to Normal
Target version changed from Version 2.8 to Future Release - High Priority

It is not a regression. Never worked, as far as I can see...

#3 Updated by Filipe Dias about 9 years ago

It should be fixed or removed then. I don't think a tool that everyone knows it is broken should be shipped in a new release. Hence the Blocker status.