From 9c8b1efd2630a5e63c95bca614e00c0cc929d646 Mon Sep 17 00:00:00 2001
From: Vighnesh Birodkar <vighneshbirodkar@gmail.com>
Date: Wed, 23 Jul 2014 04:12:23 +0530
Subject: [PATCH] docstring to _ncut_cy.pys

---
 skimage/graph/_ncut_cy.pyx | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/skimage/graph/_ncut_cy.pyx b/skimage/graph/_ncut_cy.pyx
index 77cb18ea..d8156ba4 100644
--- a/skimage/graph/_ncut_cy.pyx
+++ b/skimage/graph/_ncut_cy.pyx
@@ -7,6 +7,18 @@ import numpy as np
 
 
 def argmin2(cnp.float64_t[:] array):
+    """Return the index of the 2nd smallest value in an array.
+
+    Parameters
+    ----------
+    a : array
+        The array to process.
+
+    Returns
+    -------
+    i : int
+        The index of the second smallest value.
+    """
     cdef cnp.float64_t min1 = np.inf
     cdef cnp.float64_t min2 = np.inf
     cdef Py_ssize_t i1 = 0