From: warner <warner@allmydata.com>
Date: Mon, 16 Apr 2007 18:51:36 +0000 (+0530)
Subject: fec: remove unused mathutil.linear_fit_slope
X-Git-Url: https://git.rkrishnan.org/simplejson/?a=commitdiff_plain;h=a673bcc338c4660e777b5b86fcc5a3e03df9df2b;p=tahoe-lafs%2Fzfec.git

fec: remove unused mathutil.linear_fit_slope

darcs-hash:c66276a71abd205c6f93173f659fcb9523c2513b
---

diff --git a/zfec/zfec/util/mathutil.py b/zfec/zfec/util/mathutil.py
index 609f0df..203e95a 100644
--- a/zfec/zfec/util/mathutil.py
+++ b/zfec/zfec/util/mathutil.py
@@ -51,18 +51,6 @@ def log_ceil(n, b):
         k += 1
     return k
 
-def linear_fit_slope(ps):
-    """
-    @param ps a sequence of tuples of (x, y)
-    """
-    avex = ave([x for (x, y) in ps])
-    avey = ave([y for (x, y) in ps])
-    sxy = sum([ (x - avex) * (y - avey) for (x, y) in ps ])
-    sxx = sum([ (x - avex) ** 2 for (x, y) in ps ])
-    if sxx == 0:
-        return None
-    return sxy / sxx
-
 def permute(l):
     """
     Return all possible permutations of l.