Repository: climate Updated Branches: refs/heads/master 7cdaa7c0c -> cf3ef6015
include absolute bias Project: http://git-wip-us.apache.org/repos/asf/climate/repo Commit: http://git-wip-us.apache.org/repos/asf/climate/commit/4fd7d491 Tree: http://git-wip-us.apache.org/repos/asf/climate/tree/4fd7d491 Diff: http://git-wip-us.apache.org/repos/asf/climate/diff/4fd7d491 Branch: refs/heads/master Commit: 4fd7d4916f12757434fe4494940aac064ca24852 Parents: 3a80408 Author: Prateek Chanda <prateekko...@gmail.com> Authored: Sat Jun 23 22:25:12 2018 +0530 Committer: GitHub <nore...@github.com> Committed: Sat Jun 23 22:25:12 2018 +0530 ---------------------------------------------------------------------- ocw/metrics.py | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/climate/blob/4fd7d491/ocw/metrics.py ---------------------------------------------------------------------- diff --git a/ocw/metrics.py b/ocw/metrics.py index 3a6477e..b266012 100644 --- a/ocw/metrics.py +++ b/ocw/metrics.py @@ -281,6 +281,29 @@ def calc_bias(target_array, reference_array, average_over_time=False): return ma.average(bias, axis=0) else: return bias + + +def calc_absbias(target_array, reference_array, average_over_time=False): + ''' Calculate absolute difference between two arrays + + :param target_array: an array to be evaluated, as model output + :type target_array: :class:'numpy.ma.core.MaskedArray' + + :param reference_array: an array of reference dataset + :type reference_array: :class:'numpy.ma.core.MaskedArray' + + :param average_over_time: if True, calculated bias is averaged for the axis=0 + :type average_over_time: 'bool' + + :returns: Absolute Biases array of the target dataset + :rtype: :class:'numpy.ma.core.MaskedArray' + ''' + + bias = abs(target_array - reference_array) + if average_over_time: + return ma.average(bias, axis=0) + else: + return bias def calc_stddev(array, axis=None):
