From 76ba3ab78b0f804bd0f1434eb1c5d12d07d7fe1b Mon Sep 17 00:00:00 2001
From: Zabamund <fracgeol@gmail.com>
Date: Mon, 19 Aug 2019 13:02:44 +0200
Subject: [PATCH] format trials rad_curve for docs

---
 wellpathpy/rad_curv.py | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/wellpathpy/rad_curv.py b/wellpathpy/rad_curv.py
index 792c1f1..036617a 100644
--- a/wellpathpy/rad_curv.py
+++ b/wellpathpy/rad_curv.py
@@ -30,10 +30,15 @@ def radius_curvature(md, inc, azi):
                    \cdot cos(inc_u) - cos(inc_l)
                    \cdot \\frac{sin(azi_l) - sin(azi_u)}{(inc_l - inc_u) \cdot (azi_l - azi_u)}
 
-    northing = np.cumsum((md_lower - md_upper) * (np.cos(incl_upper) - np.cos(incl_lower)) * (np.sin(azi_lower) - np.sin(azi_upper)) / (delta_inc * delta_azi))
+    .. math::
+        easting = \sum (md_l - md_u)
+                  \cdot cos(inc_u) - cos(inc_l)
+                  \cdot \\frac{cos(azi_u) - cos(azi_l)}{(inc_l - inc_u) \cdot (azi_l - azi_u)}
 
-    :math:`easting = sum((md_l - md_u) * cos(inc_u) - cos(inc_l) * cos(azi_u) - cos(azi_l) / (inc_l - inc_u) * (azi_l - azi_u))`
-    :math:`tvd = sum((md_l - md_u) * sin(inc_l) - sin(inc_u) / (inc_l - inc_u))`
+
+    .. math::
+        tvd = \sum (md_l - md_u)
+              \cdot \\frac{sin(inc_l) - sin(inc_u)}{(inc_l - inc_u)}
 
     where: