# ValueError: list.remove(x) **URL:** \ **Category:** Support & Discussions\ **Created:** [January 17, 2024, 8:49am UTC](https://mne.discourse.group/t/valueerror-list-remove-x/8162 "2024-01-17T08:49:20Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![brainfreeze1212](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/brainfreeze1212/32/1815_2.png) [@brainfreeze1212](https://mne.discourse.group/u/brainfreeze1212)\ **Post date:** [January 17, 2024, 8:49am UTC](https://mne.discourse.group/t/valueerror-list-remove-x/8162/1 "2024-01-17T08:49:20Z")
Hello, I would like to perform this tutorial using my own EEG data and an MNI standard brain: [https://mne.tools/stable/auto\_examples/inverse/dics\_source\_power.html](https://mne.tools/stable/auto_examples/inverse/dics_source_power.html) The tutorial works fine with the files provided on the website. However, when I use my own files for it, I consistently get an error at the final step. ```Using --------------------------------------------------------------------------- ValueError Traceback (most recent call last) Cell In[38], line 3 1 stc = beta_source_power / baseline_source_power 2 message = "DICS source power in the 12-30 Hz frequency band" ----> 3 brain = stc.plot( 4 hemi="both", 5 views="axial", 6 subjects_dir=MRI_data_folder, 7 subject='outputrecon', 8 time_label=message, 9 ) File ~/anaconda3/envs/experiment_neue_fresh_backup/lib/python3.11/site-packages/mne/source_estimate.py:743, in _BaseSourceEstimate.plot(self, subject, surface, hemi, colormap, time_label, smoothing_steps, transparent, alpha, time_viewer, subjects_dir, figure, views, colorbar, clim, cortex, size, background, foreground, initial_time, time_unit, backend, spacing, title, show_traces, src, volume_options, view_layout, add_data_kwargs, brain_kwargs, verbose) 709 @copy_function_doc_to_method_doc(plot_source_estimates) 710 def plot( 711 self, (...) 741 verbose=None, 742 ): --> 743 brain = plot_source_estimates( 744 self, 745 subject, 746 surface=surface, 747 hemi=hemi, 748 colormap=colormap, 749 time_label=time_label, 750 smoothing_steps=smoothing_steps, 751 transparent=transparent, 752 alpha=alpha, 753 time_viewer=time_viewer, 754 subjects_dir=subjects_dir, 755 figure=figure, 756 views=views, 757 colorbar=colorbar, 758 clim=clim, 759 cortex=cortex, 760 size=size, 761 background=background, 762 foreground=foreground, 763 initial_time=initial_time, 764 time_unit=time_unit, 765 backend=backend, 766 spacing=spacing, 767 title=title, 768 show_traces=show_traces, 769 src=src, 770 volume_options=volume_options, 771 view_layout=view_layout, 772 add_data_kwargs=add_data_kwargs, 773 brain_kwargs=brain_kwargs, 774 verbose=verbose, 775 ) 776 return brain File :12, in plot_source_estimates(stc, subject, surface, hemi, colormap, time_label, smoothing_steps, transparent, alpha, time_viewer, subjects_dir, figure, views, colorbar, clim, cortex, size, background, foreground, initial_time, time_unit, backend, spacing, title, show_traces, src, volume_options, view_layout, add_data_kwargs, brain_kwargs, verbose) File ~/anaconda3/envs/experiment_neue_fresh_backup/lib/python3.11/site-packages/mne/viz/_3d.py:2431, in plot_source_estimates(stc, subject, surface, hemi, colormap, time_label, smoothing_steps, transparent, alpha, time_viewer, subjects_dir, figure, views, colorbar, clim, cortex, size, background, foreground, initial_time, time_unit, backend, spacing, title, show_traces, src, volume_options, view_layout, add_data_kwargs, brain_kwargs, verbose) 2429 else: 2430 with use_3d_backend(backend): -> 2431 return _plot_stc( 2432 stc, 2433 overlay_alpha=alpha, 2434 brain_alpha=alpha, 2435 vector_alpha=alpha, 2436 cortex=cortex, 2437 foreground=foreground, 2438 size=size, 2439 scale_factor=None, 2440 show_traces=show_traces, 2441 src=src, 2442 volume_options=volume_options, 2443 view_layout=view_layout, 2444 add_data_kwargs=add_data_kwargs, 2445 brain_kwargs=brain_kwargs, 2446 **kwargs, 2447 ) File ~/anaconda3/envs/experiment_neue_fresh_backup/lib/python3.11/site-packages/mne/viz/_3d.py:2601, in _plot_stc(stc, subject, surface, hemi, colormap, time_label, smoothing_steps, subjects_dir, views, clim, figure, initial_time, time_unit, background, time_viewer, colorbar, transparent, brain_alpha, overlay_alpha, vector_alpha, cortex, foreground, size, scale_factor, show_traces, src, volume_options, view_layout, add_data_kwargs, brain_kwargs) 2598 del kwargs 2600 if time_viewer: -> 2601 brain.setup_time_viewer(time_viewer=time_viewer, show_traces=show_traces) 2602 else: 2603 brain.show() File ~/anaconda3/envs/experiment_neue_fresh_backup/lib/python3.11/site-packages/mne/viz/_brain/_brain.py:556, in Brain.setup_time_viewer(self, time_viewer, show_traces) 554 self.color_list = _get_color_list() 555 # remove grey for better contrast on the brain --> 556 self.color_list.remove("#7f7f7f") 557 self.color_cycle = _ReuseCycle(self.color_list) 558 self.mpl_canvas = None ValueError: list.remove(x): x not in list ``` I would like to inquire how I can work around the error in order to generate a plot, as I am unable to modify the “list.remove(x)” command. Thank you in advance for your help! Best regards, brainfreeze1212 **MNE version: 1.6.1** **Operating system: macOS Ventura Version 13.6.1** ---
**Author:** ![sappelhoff](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/sappelhoff/32/3276_2.png) [@sappelhoff](https://mne.discourse.group/u/sappelhoff)\ **Post date:** [February 19, 2024, 10:37am UTC](https://mne.discourse.group/t/valueerror-list-remove-x/8162/2 "2024-02-19T10:37:43Z")
> [@brainfreeze1212](#): > > ```python > 554 self.color_list = _get_color_list() > 555 # remove grey for better contrast on the brain > --> 556 self.color_list.remove("#7f7f7f") > > ``` did you try removing your installation and creating a new one from scratch? To me, this looks like a conflict between software versions. Alternatively, please look at the exact colors you are passing to the functions, and try experimenting with that and whether that can fix something.