X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Ftools%2Fpresentation%2Futils.py;h=7037404c270e1871eca638709cb83355e26568fc;hp=f423cd22a79ac7ee0de6b12624d48f814c62e8e9;hb=3c5428b13bdf28774922b3abe370f23e3ccc5ead;hpb=eecad36d7d2275fa47fbcab40dbcf56108ab0a51

diff --git a/resources/tools/presentation/utils.py b/resources/tools/presentation/utils.py
index f423cd22a7..7037404c27 100644
--- a/resources/tools/presentation/utils.py
+++ b/resources/tools/presentation/utils.py
@@ -14,6 +14,8 @@
 """General purpose utilities.
 """
 
+import numpy as np
+
 from os import walk
 from os.path import join
 from math import sqrt
@@ -57,7 +59,30 @@ def relative_change(nr1, nr2):
     :rtype: float
     """
 
-    return (nr1 - nr2) / nr2 * 100
+    return float(((nr2 - nr1) / nr1) * 100)
+
+
+def remove_outliers(input_data, outlier_const):
+    """
+
+    :param input_data: Data from which the outliers will be removed.
+    :param outlier_const: Outlier constant.
+    :type input_data: list
+    :type outlier_const: float
+    :returns: The input list without outliers.
+    :rtype: list
+    """
+
+    data = np.array(input_data)
+    upper_quartile = np.percentile(data, 75)
+    lower_quartile = np.percentile(data, 25)
+    iqr = (upper_quartile - lower_quartile) * outlier_const
+    quartile_set = (lower_quartile - iqr, upper_quartile + iqr)
+    result_lst = list()
+    for y in data.tolist():
+        if quartile_set[0] <= y <= quartile_set[1]:
+            result_lst.append(y)
+    return result_lst
 
 
 def get_files(path, extension=None, full_path=True):