AGI EarthImager 1D is a Windows 32-bit platform based computer program that interprets one-dimensional (1D) electrical resistivity sounding data and produces a layered resistivity model that reveals subsurface geology. EarthImager 1D processes vertical electrical sounding (VES) data collected with Schlumberger, Wenner, dipole-dipole, pole-pole and other arrays. The forward modeling calculation is based on a 2D finite element method. Both smooth model inversion and damped least squares inversion methods were implemented in EarthImager 1D.
You can test AGI EarthImager 1D yourself by downloading the demo.
It is fully functional except some features like printing and saving has been disabled and the maximum iteration number is limited.