Monitor convenience functions

paseos/paseos.py

@@ -39,6 +39,7 @@ class PASEOS:
 
     # Used to monitor the local actor over execution and write performance stats
     _operations_monitor = None
+
     _time_since_previous_log = sys.float_info.max
 
     def __init__(self, local_actor: BaseActor, cfg=None):
@@ -168,6 +169,15 @@ def add_known_actor(self, actor: BaseActor):
         # Else add
         self._known_actors[actor.name] = actor
 
+    @property
+    def monitor(self):
+        """Access paseos operations monitor which tracks local actor attributes such as temperature or state of charge.
+
+        Returns:
+            OperationsMonitor: Monitor object.
+        """
+        return self._operations_monitor
+
     @property
     def is_running_activity(self):
         """Allows checking whether there is currently an activity running.

paseos/tests/multiple_instance_test.py

@@ -11,10 +11,12 @@ def test_multiple_instances():
     # Initial power is 500m check charging works
     assert sat1.battery_level_in_Ws == 500
     assert sat2.battery_level_in_Ws == 500
+
     sim.advance_time(42, 0)
     assert sat1.battery_level_in_Ws == 542
     assert sat2.battery_level_in_Ws == 500
 
     sim2.advance_time(42, 0)
+
     assert sat1.battery_level_in_Ws == 542
     assert sat2.battery_level_in_Ws == 542

paseos/tests/operations_monitor_test.py

@@ -56,4 +56,8 @@ async def func2(args):
     sim.perform_activity("Activity_2")
     await wait_for_activity(sim)
 
+    # Try out item function
+    sim.monitor["state_of_charge"]
+    sim.monitor.plot("state_of_charge")
+
     sim.save_status_log_csv("test.csv")

paseos/utils/operations_monitor.py

@@ -3,6 +3,7 @@
 from loguru import logger
 from dotmap import DotMap
 import pykep as pk
+import matplotlib.pyplot as plt
 
 from paseos.actors.base_actor import BaseActor
 from paseos.actors.spacecraft_actor import SpacecraftActor
@@ -29,6 +30,31 @@ def __init__(self, actor_name):
         self._log.position = []
         self._log.velocity = []
 
+    def __getitem__(self, item):
+        """Get a logged attributes values.
+
+        Args:
+            item (str): Name of item. Available are "timesteps","current_activity","state_of_charge",
+            "is_in_eclipse","known_actors","position","velocity","temperature"
+        """
+        assert item in self._log.keys(), (
+            'Untracked quantity. Available are "timesteps","current_activity","state_of_charge",'
+            + '"is_in_eclipse","known_actors","position","velocity","temperature"'
+        )
+        return self._log[item]
+
+    def plot(self, item):
+        assert item in self._log.keys(), (
+            'Untracked quantity. Available are "timesteps","current_activity","state_of_charge",'
+            + '"is_in_eclipse","known_actors","position","velocity","temperature"'
+        )
+        values = self._log[item]
+        plt.Figure(figsize=(6, 2), dpi=150)
+        t = self._log.timesteps
+        plt.plot(t, values)
+        plt.xlabel("Time [s]")
+        plt.ylabel(item.replace("_", " "))
+
     def log(
         self,
         local_actor: BaseActor,