ValueError: DigMontage is only a subset of info. There are 4 channel positions not present in the DigMontage. The required channels are: [‘FP1’, ‘VEOG’, ‘FPz’, ‘FP2’]. Consider using inst.set_channel_types if these are not EEG channels, or use the on_missing parameter if the channel positions are …

Hello @yonglongwen and welcome to the forum! Like the error message says, there are channels in your data that are not present in the montage you want to set. You can ignore this problem by passing on_missing='warn' (just raises a warning instead of failing), but I suggest you fix / update your mon…

I’ve tried this method,and it still hasn’t worked out locs_info_path = “D:\ProgramData\jupyter\10_20.txt” montage = mne.channels.read_custom_montage(locs_info_path) new_chan_names = np.loadtxt(locs_info_path, dtype=str, usecols=3) old_chan_names = raw.info[“ch_names”] chan_names_dict = {old_cha…

Thanks a lot . I’ve tried it the way you said, I still haven’t solved it. I don’t konw “match_case=False” is what. How to fix / update your montage file to include FP1 , FPz , and FP2 . I think name is correct. If possible,I can send you a copy of my data. May I ask you email address.

I sincerely hope you can help me. It is my email address:Yonglongwen@outlook.com I can provide a data for you,please you can check it .

[image] yonglongwen: I don’t konw “match_case=False” is what. match_case is a parameter of the raw.set_montage() method: mne.io.Raw — MNE 1.6.0 documentation [image] yonglongwen: How to fix / update your montage file to include FP1 , FPz , and FP2 If your data contains channels FP1, F…

When I do,such as montage = mne.channels.make_standard_montage(“standard_1020”) raw.set_montage(montage,on_missing=‘ignore’) [image]

[image]8-3.eeg [image]8-3.vhdr [image]8-3.vmrk Since I need to use electrode points to draw a topographic map, I need to solve this problem and need to understand the process

[image] Thank you for your guidance, I 've solved it.

actually, you haven’t solved it. Look at the middle of the sensor plot, you’ll see there are several overlapping channels. See overlapping channels in plot_psd_topo for the correct solution.

Channel positions not present in DigMontage

Support & Discussions

Topic		Replies	Views
Adding montage to the raw BrainVision EEG data Support & Discussions eeg , montage	3	1574	November 9, 2021
ValueError: DigMontage Support & Discussions eeg , visualization	1	344	October 23, 2023
There is 1 channel position not present in the DigMontage ['VREF] Support & Discussions raw	2	56	April 26, 2025
RuntimeWarning: DigMontage is only a subset of info. There are 22 channel positions not present in the DigMontage. Support & Discussions	1	360	December 13, 2022
Issue with setting a montage Support & Discussions eeg , montage	8	2284	August 30, 2021

Channel positions not present in DigMontage

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