Resolve "release v1.4.0"

Closes #317 (closed)

mlair/data_handler/data_handler_single_station.py

@@ -195,7 +195,17 @@ class DataHandlerSingleStation(AbstractDataHandler):
             else:
                 raise NotImplementedError
 
-        def f_apply(data, method, mean=None, std=None, min=None, max=None):
+        def f_apply(data, method, **kwargs):
+            for k, v in kwargs.items():
+                if not (isinstance(v, xr.DataArray) or v is None):
+                    _, opts = statistics.min_max(data, dim)
+                    helper = xr.ones_like(opts['min'])
+                    kwargs[k] = helper * v
+            mean = kwargs.pop('mean', None)
+            std = kwargs.pop('std', None)
+            min = kwargs.pop('min', None)
+            max = kwargs.pop('max', None)
+
             if method == "standardise":
                 return statistics.standardise_apply(data, mean, std), {"mean": mean, "std": std, "method": method}
             elif method == "centre":