added equal to signs to the if loops to check if causing the return error

locklost/plugins/saturations.py

@@ -185,11 +185,11 @@ def set_ylims(saturations, xmax, buffer):
         ymins.append(min(scaling_vals))
         ymaxs.append(max(scaling_vals))
 
-    if max(ymaxs) > 0:
+    if max(ymaxs) >= 0:
         ymax = 1.1*max(ymaxs)
     elif max(ymaxs) < 0:
         ymax = 0.9*max(ymaxs)
-    if min(ymins) < 0:
+    if min(ymins) <= 0:
         ymin = 1.1*min(ymins)
     elif min(ymins) > 0:
         ymin = 0.9*min(ymins)