Documentation and source code of several packages, including plotxy, magmap, psd and color.

Instructions and subroutines for SNOPT optimization of the 1-D MT inversion (decribed in Medin, Parker & Constable, PEPI, 2007: doi:101016/j.pepi2006.09.001) has been taken down. Please contact Ashley Van Beusekom at ashley.vanbeusekom@gmail.com for this material.