Merge pull request #459 from GaneshPatil7517/fix/lag-validation-379

fix: clamp lag parameter to buffer size with warning (fixes #379)

Author: pradeeban

tools/plotymlag.py

@@ -5,7 +5,13 @@
 import time
 
 size = 10
-lag = concore.tryparam("lag", 0) 
+lag = concore.tryparam("lag", 0)
+if lag >= size:
+    logging.warning(
+        "Requested lag (%d) exceeds buffer size (%d). Clamping to %d.",
+        lag, size, size - 1
+    )
+    lag = size - 1
 logging.info(f"plot ym with lag={lag}")
 
 concore.delay = 0.005