use built in clip

CHANGELOG.rst

@@ -21,7 +21,8 @@ Internal Changes
   :py:func:`~xskillscore.rps` expilicty checks for ``bin_dim`` if
   ``category_edges==None``. (:pr:`287`) `Aaron Spring`_
 - Add doctest on the docstring examples. (:pr:`302`) `Ray Bell`_
-- Removed a call to compute weights in testing (:pr:`306`) `Ray Bell`_
+- Removed a call to compute weights in testing. (:pr:`306`) `Ray Bell`_
+- Use built in ``xarray`` clip method. (:pr:`309`) `Ray Bell`_
 
 
 xskillscore v0.0.19 (2021-03-12)

ci/dev.yml

@@ -24,7 +24,7 @@ dependencies:
   - xarray>=0.16.1
   # xhistogram 0.1.3 introduced an error that broke xskillscore
   # see https://github.com/xgcm/xhistogram/issues/48
-  - xhistogram!=0.1.3
+  - xhistogram==0.1.2
   # Package Management
   - asv
   - black

ci/doc.yml

@@ -21,6 +21,6 @@ dependencies:
   - xarray>=0.16.1
   # xhistogram 0.1.3 introduced an error that broke xskillscore
   # see https://github.com/xgcm/xhistogram/issues/48
-  - xhistogram!=0.1.3
+  - xhistogram==0.1.2
   - pip:
       - -e ..

ci/docs_notebooks.yml

@@ -14,7 +14,7 @@ dependencies:
   - xarray>=0.16.1
   # xhistogram 0.1.3 introduced an error that broke xskillscore
   # see https://github.com/xgcm/xhistogram/issues/48
-  - xhistogram!=0.1.3
+  - xhistogram==0.1.2
   - importlib_metadata
   - jupyterlab
   - matplotlib-base

ci/minimum-tests.yml

@@ -15,7 +15,7 @@ dependencies:
   - xarray>=0.16.1
   # xhistogram 0.1.3 introduced an error that broke xskillscore
   # see https://github.com/xgcm/xhistogram/issues/48
-  - xhistogram!=0.1.3
+  - xhistogram==0.1.2
   - coveralls
   - pytest
   - pytest-cov

xskillscore/core/probabilistic.py

@@ -1153,9 +1153,9 @@ def _auc(fpr, tpr, dim="probability_bin"):
                 area = xr.apply_ufunc(
                     np.trapz, tpr, fpr, input_core_dims=[[dim], [dim]], dask="allowed"
                 )
-    area = np.abs(area)
+    area = abs(area)
     if ((area > 1)).any():
-        area = np.clip(area, 0, 1)  # allow only values between 0 and 1
+        area = area.clip(0, 1)  # allow only values between 0 and 1
     return area
 
 

xskillscore/tests/test_probabilistic.py

@@ -996,7 +996,7 @@ def test_roc_bin_edges_continuous_against_sklearn(
     forecast_1d_long, observation_1d_long, drop_intermediate_bool
 ):
     """Test xs.roc against sklearn.metrics.roc_curve/auc_score."""
-    fp = np.clip(forecast_1d_long, 0, 1)  # prob
+    fp = forecast_1d_long.clip(0, 1)  # prob
     ob = observation_1d_long > 0  # binary
     # sklearn
     sk_fpr, sk_tpr, _ = roc_curve(ob, fp, drop_intermediate=drop_intermediate_bool)
@@ -1017,7 +1017,7 @@ def test_roc_bin_edges_continuous_against_sklearn(
 
 def test_roc_bin_edges_drop_intermediate(forecast_1d_long, observation_1d_long):
     """Test that drop_intermediate reduces probability_bins in xs.roc ."""
-    fp = np.clip(forecast_1d_long, 0, 1)  # prob
+    fp = forecast_1d_long.clip(0, 1)  # prob
     ob = observation_1d_long > 0  # binary
     # xs
     txs_fpr, txs_tpr, txs_area = roc(