EEGtopo is a program to create montage layouts, topoplots and other graphics based on EEG electrode locations.




Install the PKGBUILD from Arch Linux User Repository (AUR).
$ eegtopo -e Fz C3 Cz C4 Pz -o laplacian.pdf
This creates a file, laplacian.pdf, that shows schematically the locations of the electrodes Fz, C3, Cz, C4, and Pz.
For more advanced or fine-grained control over your plots, you will need to create small script files or check out the command line options. There is also a Matlab wrapper.