Bug report #13192
Error when saving Matplotlib figure
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | - | ||
| Affected QGIS version: | 2.10.0 | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | up/downstream |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 21253 |
Description
I opened #13191 because I think it is a QGIS issue (or Matplotlib).
The plugin uses the Matplotlib framework for plotting, therefore I'd exclude that it is a plugin issue.
In QGIS 64bit, saving a plot to png format in the Semi-Automatic Classification Plugin causes the crash of QGIS 64bit. It works in Linux.
In QGIS 32bit, saving a plot to jpg format gives the error "The _imaging C module is not installed".
I think it is related to Matplotlib dependencies.
Attached the minidump.
Thank you
History
#1
Updated by Peter Drexel over 8 years ago
I also get a minidump when I try to save a figure to png in the VoGIS-ProfilTool Plugin. It also uses the matplotlip.
Thanks
Peter
#2
Updated by Admire Nyakudya over 8 years ago
- File error.png added
When running a python script in processing that involves matplotlib.pyplot in windows 2.8 LTS saving a plot as png causes a mini dump error. However running the same processing script in linux results in no error. But saving the plot as jpg in windows does not result in error.
#3
Updated by Giovanni Manghi over 8 years ago
- Status changed from Open to Feedback
shouldn't this be filed on the osgeo4w tracker (where the dependencies and python libraries for Windows are packaged)?
#4
Updated by Giovanni Manghi over 8 years ago
- Status changed from Feedback to Closed
- Resolution set to up/downstream
as far as I understand this could be an issue in matplotlib as is packaged in osgeo4w, if so please file a ticket in the osgeo4w bug tracker, if I'm wrong please reopen this ticket.
#5
Updated by Jean Hemmi over 8 years ago
I was following this issue since two users of my plugin (PhysiocapAnalyseur) have experimented the same error "The _imaging C module is not installed" when writing a png with matplotlib .
I have reproduced this error directly on an old eeepc 32 bit with a fresh install of QGIS 2.12.2 (
in the Console Python:
import PIL
from PIL import _imaging
finish with "DLL load failed" on Windows 32 bits where
matplotlib.__version__
'1.2.1'
PIL.Image.VERSION
'1.1.7'
It's OK on linux & Windows 64 bits where
matplotlib.__version__
'1.3.1'
PIL.VERSION
'1.1.7'
I've create a ticket on OSGEO bug tracker #481
#6
Updated by Jean Hemmi over 8 years ago
I've create a ticket on OSGEO4w bug tracker 481 https://trac.osgeo.org/osgeo4w/ticket/481