From 56aa003a3ceaffaa65ed50635869ec7223c15c4d Mon Sep 17 00:00:00 2001
From: Rowan Cockett <rowan@visiblegeology.com>
Date: Thu, 3 Oct 2013 12:16:10 -0700
Subject: [PATCH] Start of DC documentation.

---
 SimPEG/forward/DCProblem/DCProblem.py | 14 ++++++++++++++
 SimPEG/forward/DCProblem/__init__.py  |  2 ++
 SimPEG/forward/__init__.py            |  1 +
 docs/api_Problem.rst                  | 18 ++++++++++++++++++
 4 files changed, 35 insertions(+)
 create mode 100644 SimPEG/forward/DCProblem/__init__.py

diff --git a/SimPEG/forward/DCProblem/DCProblem.py b/SimPEG/forward/DCProblem/DCProblem.py
index fa557ea5..cf33d86c 100644
--- a/SimPEG/forward/DCProblem/DCProblem.py
+++ b/SimPEG/forward/DCProblem/DCProblem.py
@@ -32,6 +32,20 @@ class DCProblem(Problem):
         return phi
 
     def J(self, m, v, u=None, solve=None):
+        """
+            :param numpy.array m: model
+            :param numpy.array v: vector to multiply
+            :param numpy.array u: fields
+            :rtype: numpy.array
+            :return: Jv
+
+            .. math::
+                c(m,u) = A(m)u - q = G\\text{sdiag}(M(mT(m)))Du - q = 0
+
+                \\nabla_u (A(m)u - q) = A(m)
+
+                \\nabla_m (A(m)u - q) = G\\text{sdiag}(Du)\\nabla_m (M(mT(m)))
+        """
         P = self.P
         D = self.mesh.faceDiv
         G = self.mesh.cellGrad
diff --git a/SimPEG/forward/DCProblem/__init__.py b/SimPEG/forward/DCProblem/__init__.py
new file mode 100644
index 00000000..a868cf80
--- /dev/null
+++ b/SimPEG/forward/DCProblem/__init__.py
@@ -0,0 +1,2 @@
+from DCProblem import *
+from DCutils import *
diff --git a/SimPEG/forward/__init__.py b/SimPEG/forward/__init__.py
index 3c4d3728..fe849d41 100644
--- a/SimPEG/forward/__init__.py
+++ b/SimPEG/forward/__init__.py
@@ -1 +1,2 @@
 from Problem import *
+import DCProblem
diff --git a/docs/api_Problem.rst b/docs/api_Problem.rst
index d43616d9..83250f3e 100644
--- a/docs/api_Problem.rst
+++ b/docs/api_Problem.rst
@@ -1,8 +1,26 @@
 .. _api_Problem:
 
+
+
 Problem
 *******
 
 .. automodule:: SimPEG.forward.Problem
     :members:
     :undoc-members:
+
+
+DCProblem
+*********
+
+.. automodule:: SimPEG.forward.DCProblem.DCProblem
+    :members:
+    :undoc-members:
+
+
+DCutils
+*******
+
+.. automodule:: SimPEG.forward.DCProblem.DCutils
+    :members:
+    :undoc-members: