Plt.subplots() error in mantid workbench

Bugs
1

I am using mantid workbench version 6.10.0.1 (18 Sep 2024).
My operating system is Red Hat Enterprise Linux, version 9.4 (Plow)

I receive an error when I try:
fig, ax = plt.subplots()

The error is:
AttributeError: ‘WorkbenchNavigationToolbar’ object has no attribute ‘sig_crosshair_toggle_triggered’

I will paste the full error message at the end

Expected behavior

Generate a figure and axes object for matplotlib

Actual behavior

AttributeError: ‘WorkbenchNavigationToolbar’ object has no attribute ‘sig_crosshair_toggle_triggered’

Steps to reproduce the behavior

import matplotlib.pyplot as plt

fig, ax = plt.subplots()

Platforms affected

Mantid Workbench

The full error message

AttributeError: ‘WorkbenchNavigationToolbar’ object has no attribute ‘sig_crosshair_toggle_triggered’
File “”, line 6, in
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/matplotlib/pyplot.py”, line 1501, in subplots
fig = figure(**fig_kw)
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/matplotlib/_api/deprecation.py”, line 454, in wrapper
return func(*args, **kwargs)
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/matplotlib/pyplot.py”, line 840, in figure
manager = new_figure_manager(
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/matplotlib/pyplot.py”, line 384, in new_figure_manager
return _get_backend_mod().new_figure_manager(*args, **kwargs)
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/workbench/plotting/figuremanager.py”, line 650, in new_figure_manager
return new_figure_manager_given_figure(num, this_fig)
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/workbench/plotting/figuremanager.py”, line 664, in new_figure_manager_given_figure
return QAppThreadCall(_new_figure_manager_given_figure_impl)(int(num), figure)
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/mantidqt/utils/qt/qappthreadcall.py”, line 89, in call
else:
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/mantidqt/utils/qt/qappthreadcall.py”, line 107, in _on_call
except Exception: # pylint: disable=broad-except
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/workbench/plotting/figuremanager.py”, line 661, in _new_figure_manager_given_figure_impl
return force_method_calls_to_qapp_thread(FigureManagerWorkbench(canvas, num))
File “/opt/anaconda/envs/mantid/lib/python3.10/site-packages/workbench/plotting/figuremanager.py”, line 235, in init
self.toolbar.sig_crosshair_toggle_triggered.connect(self.crosshair_toggle)

2

Hi Elscan,

Thank you for the error report. To diagnose the problem, can you reply with the following information:

  • Mantid Workbench version
  • Operating system
  • Did you use a standalone installer to install Mantid (i.e. from this link), or did you use Conda?

Many thanks,
Rob

4

I edited my question to answer your first two points (workbench version and operating system).
As for how mantid was installed, I did not install it.
It is installed on one of ORNL’s virtual machines which I access via ThinLinc.

5

Thank you, I have referred you to the relevant ORNL Mantid software developers. They will get back to you soon

6

Hello, mantid developer here. We are trying to reproduce this issue. The crosshair feature was deployed in 6.11 about two weeks ago. When I open thinlinc I get 6.11.0.1 version of mantid. Are you able to log out and log back into thinlinc starting a new instance? This may help you to use the latest mantid version.

7

That worked, thank you