How to calculate the ch_pos array

[coderFirework]

Thank you for opening up the code，I am new to EEG research，and I am using an Emotiv epoc flex device which has 32 electrodes.I want to know how to calculate the channel position array of this device.

[bit-magpie]

Thank you for the question. I have created this code for the channel arrangement of EMOTIV Epoc 14 electrode headset.
If you want to use this code for EMOTIV Epoc flex, please update the line 40 in topograph.py. You have to find coordinates of electrodes manually within the limits of -0.5 and 4.5 for both x and y axes.

This implementation is not really professional and I'll update it ASAP.

[mehdiajami71]

hi
Is it possible to guide a 32-channel system, how to set the coordinates and what are the principles of these coordinates?