![SimPEG](https://raw.github.com/simpeg/simpeg/master/docs/simpeg-logo.png) Simulation and Parameter Estimation in Geophysics - A python package for simulation and gradient based parameter estimation in the context of geophysical applications. The vision is to create a package for finite volume simulation with applications to geophysical imaging and subsurface flow. To enable the understanding of the many different components, this package has the following features: * modular with respect to the spacial discretization, optimization routine, and geophysical problem * built with the inverse problem in mind * provides a framework for geophysical and hydrogeologic problems * supports 1D, 2D and 3D problems * designed for large-scale inversions Documentation: [http://simpeg.readthedocs.org/en/latest/](http://simpeg.readthedocs.org/en/latest/) Code: [https://github.com/simpeg/simpeg](https://github.com/simpeg/simpeg) Tests: [https://travis-ci.org/simpeg/simpeg](https://travis-ci.org/simpeg/simpeg) Build Status: [![Build Status](https://travis-ci.org/simpeg/simpeg.png)](https://travis-ci.org/simpeg/simpeg) Bugs & Issues: [https://github.com/simpeg/simpeg/issues](https://github.com/simpeg/simpeg/issues) Code Snippets & Tutorials: [http://www.row1.ca/simpeg](http://www.row1.ca/simpeg)