Fix boolean ndarray conversion bug (fixes #411)

proplot/internals/inputs.py

@@ -130,15 +130,17 @@ def _to_numpy_array(data, strip_units=False):
         data = data.data  # support pint quantities that get unit-stripped later
     elif isinstance(data, (DataFrame, Series, Index)):
         data = data.values
-    if data.dtype == bool:
-        data = data.view(np.uint8)
     if Quantity is not ndarray and isinstance(data, Quantity):
-        if strip_units:
-            return np.atleast_1d(data.magnitude)
-        else:
-            return np.atleast_1d(data.magnitude) * data.units
+        units = None if strip_units else data.units
+        data = data.magnitude
     else:
-        return np.atleast_1d(data)  # natively preserves masked arrays
+        units = None
+        data = np.atleast_1d(data)  # natively preserves masked arrays
+    if np.issubdtype(data.dtype, bool):
+        data = data.view(np.uint8)
+    if units is not None:
+        data = data * units
+    return data
 
 
 def _to_masked_array(data, *, copy=False):