Repository: climate Updated Branches: refs/heads/master 9b6d73d48 -> 2b71d0b9e
CLIMATE-482 - Add basic StdDevRatio metric - Add a version of StdDevRatio without an yearly/seasonal rebinning prior to metric calculation. Project: http://git-wip-us.apache.org/repos/asf/climate/repo Commit: http://git-wip-us.apache.org/repos/asf/climate/commit/b632d481 Tree: http://git-wip-us.apache.org/repos/asf/climate/tree/b632d481 Diff: http://git-wip-us.apache.org/repos/asf/climate/diff/b632d481 Branch: refs/heads/master Commit: b632d48105cd6b662a201ebd8673d31684add3bf Parents: 9b6d73d Author: Michael Joyce <[email protected]> Authored: Wed Jul 2 07:48:22 2014 -0700 Committer: Michael Joyce <[email protected]> Committed: Wed Jul 2 07:48:22 2014 -0700 ---------------------------------------------------------------------- ocw/metrics.py | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/climate/blob/b632d481/ocw/metrics.py ---------------------------------------------------------------------- diff --git a/ocw/metrics.py b/ocw/metrics.py index d040c11..b7036c4 100644 --- a/ocw/metrics.py +++ b/ocw/metrics.py @@ -106,6 +106,26 @@ class TemporalStdDev(UnaryMetric): return target_dataset.values.std(axis=0, ddof=1) +class StdDevRatio(BinaryMetric): + '''Calculate the standard deviation ratio between two datasets.''' + + def run(self, ref_dataset, target_dataset): + '''Calculate the standard deviation ratio. + + .. note:: + Overrides BinaryMetric.run() + + :param ref_dataset: The reference dataset to use in this metric run. + :type ref_dataset: ocw.dataset.Dataset object + :param target_dataset: The target dataset to evaluate against the + reference dataset in this metric run. + :type target_dataset: ocw.dataset.Dataset object + + :returns: The standard deviation ratio of the reference and target + ''' + return target_dataset.values.std() / ref_dataset.values.std() + + class SpatialStdDevRatio(BinaryMetric): '''Calculate the ratio of spatial standard deviation (model standard deviation)/(observed standard deviation)'''
