minor docs string fix in sampling
@@ -211,8 +211,8 @@ class PointRasterSampler:
def _get_unknown_value(self):
""" Finds the smallest integer value >=0 that is not in `labels`
- :return:
- :rtype:
+ :return: Value that is not in the labels
+ :rtype: int
"""
label_set = set(self.labels)
value = 0
