From 9f97efb34825d6d5cb2c0b1fdb6c2d54c49f55ca Mon Sep 17 00:00:00 2001
From: Isuru Fernando <isuruf@gmail.com>
Date: Mon, 29 Jan 2018 12:56:29 -0600
Subject: [PATCH] Fix coeff_matrix

---
 sumpy/expansion/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sumpy/expansion/__init__.py b/sumpy/expansion/__init__.py
index d43379a6..f4144a86 100644
--- a/sumpy/expansion/__init__.py
+++ b/sumpy/expansion/__init__.py
@@ -420,7 +420,7 @@ class NewLinearRecurrenceBasedDerivativeWrangler \
         for i in range(s.shape[0]):
             for j in range(s.shape[1]):
                 if np.abs(s[i][j]) > tol:
-                    coeff_matrix[i].append((j, s[i][j]))
+                    coeff_matrix[j].append((i, s[i][j]))
 
         logger.debug("computing recurrence for Taylor coefficients: "
                      "done after {dur:.2f} seconds"
-- 
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