diff options
Diffstat (limited to 'storperf/utilities/math.py')
| -rw-r--r-- | storperf/utilities/math.py | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/storperf/utilities/math.py b/storperf/utilities/math.py index 031fc3e..a11ec19 100644 --- a/storperf/utilities/math.py +++ b/storperf/utilities/math.py @@ -25,7 +25,7 @@ def slope(data_series): # In the particular case of an empty data series if len(data_series) == 0: - beta2 = 0 + beta2 = None else: # The general case m = len(data_series) @@ -78,7 +78,7 @@ def range_value(data_series): # In the particular case of an empty data series if len(data_series) == 0: - range_value = 0 + range_value = None else: # The general case max_value = max(data_series) @@ -86,3 +86,26 @@ def range_value(data_series): range_value = max_value - min_value return range_value + + +def average(data_series): + """ + This function seeks to calculate the average value of the data series + given a series following the pattern : [y1, y2, y3, ..., ym]. + If this data pattern were to change, the data_treatment function + should be adjusted to ensure compatibility with the rest of the + Steady State Dectection module. + The function returns a float number corresponding to the average of the yi. + """ + m = len(data_series) + + if m == 0: # In the particular case of an empty data series + average = None + + else: + data_sum = 0 + for value in data_series: + data_sum += value + average = data_sum / float(m) + + return average |