RF: isSparse accepts but complains about absolute

ukbparse/processing_functions_core.py

@@ -18,9 +18,9 @@
 
 
 import logging
-
-import itertools as it
+import warnings
 import collections
+import itertools as it
 
 import numpy  as np
 import pandas as pd
@@ -38,7 +38,8 @@ def isSparse(data,
              mincat=None,
              maxcat=None,
              abspres=True,
-             abscat=True):
+             abscat=True,
+             absolute=None):
     """Returns ``True`` if the given data looks sparse, ``False`` otherwise.
 
     Used by :func:`removeIfSparse`.
@@ -98,6 +99,12 @@ def isSparse(data,
                       is not sparse.
     """
 
+    if absolute is not None:
+        warnings.warn('The absolute argument to isSparse is deprecated '
+                      'and will be removed in ukbparse 1.0.0. Use abspres/'
+                      'abscat instead.', DeprecationWarning, stacklevel=1)
+        abspres = absolute
+
     presmask = data.notnull()
     present  = data[presmask]
     ntotal   = len(data)