Merge pull request MIT-LCP#285 from MIT-LCP/neg_subtype_248

Lucas-Mc · web-flow · commit dc61e8e36d19 · 2021-04-23T15:28:07.000-04:00
Allow annotation negative subtypes MIT-LCP#248
diff --git a/wfdb/io/annotation.py b/wfdb/io/annotation.py
@@ -475,8 +475,8 @@ def check_field(self, field):
         # The C WFDB library stores num/sub/chan as chars.
         elif field == 'subtype':
             # signed character
-            if min(self.subtype) < 0 or max(self.subtype) >127:
-                raise ValueError("The 'subtype' field must only contain non-negative integers up to 127")
+            if min(self.subtype) < -128 or max(self.subtype) > 127:
+                raise ValueError("The 'subtype' field must only contain integers from -128 to 127")
         elif field == 'chan':
             # un_signed character
             if min(self.chan) < 0 or max(self.chan) >255:
