Use Agg matplotlib backend

scripts/dom_activity.py

@@ -26,6 +26,9 @@ from io import BytesIO
 import os
 import time
 
+import matplotlib
+matplotlib.use("Agg")
+
 import km3pipe as kp
 import km3pipe.style
 from km3modules.plot import plot_dom_parameters

scripts/dom_rates.py

@@ -24,6 +24,8 @@ from io import BytesIO
 import os
 
 import numpy as np
+import matplotlib
+matplotlib.use("Agg")
 
 import km3pipe as kp
 import km3pipe.style

scripts/trigger_rates.py

@@ -28,6 +28,8 @@ import shutil
 import time
 import threading
 
+import matplotlib
+matplotlib.use("Agg")
 import matplotlib.pyplot as plt
 import matplotlib.dates as md