Hi all,
I ran several simulations with the route file generated by duarouter but I have encountered the error intermittently as a following terminal message:
```
200.00 vehicles loaded.
0.00 vehicles discarded.
200.00 vehicles written.
Success.
Success.up to time step: 200.02
OV routes are randomly generated with weighted od matrix
Error: unterminated comment
In file '/home/bon/LaneRPM/Trip/ODTrip/OVODroute_crowded.rou.xml'
At line/column 21/1.
Traceback (most recent call last):
File "/home/bon/LaneRPM/DQN/LaneRPM_RouteDQN_train.py", line 489, in <module>
state, info = env.reset() # dict state
File "/home/bon/LaneRPM/LaneRPM/rl/maskedRouteEnv.py", line 276, in reset
traci.start(TRACI_CMD,label=self._env_config['label'])
File "/home/bon/LaneRPM/.venv/lib/python3.10/site-packages/traci/main.py", line 147, in start
result = init(sumoPort, numRetries, "localhost", label, sumoProcess, doSwitch, traceFile, traceGetters)
File "/home/bon/LaneRPM/.venv/lib/python3.10/site-packages/traci/main.py", line 119, in init
return con.getVersion()
File "/home/bon/LaneRPM/.venv/lib/python3.10/site-packages/traci/connection.py", line 382, in getVersion
result = self._sendCmd(command, None, None)
File "/home/bon/LaneRPM/.venv/lib/python3.10/site-packages/traci/connection.py", line 232, in _sendCmd
return self._sendExact()
File "/home/bon/LaneRPM/.venv/lib/python3.10/site-packages/traci/connection.py", line 137, in _sendExact
raise FatalTraCIError("Connection closed by SUMO.")
traci.exceptions.FatalTraCIError: Connection closed by SUMO.
Quitting (on error).
```
First of all, line 21, column 1 in the `.xml` route file generated by duarouter seems to have no trouble in terms of comment rule. (See the cursor position on below capture. This `.xml` file is also attached in this mail.) This is why I get trouble in debugging.
Though I thought the very immediate cause of my error was the `duarouter` that generated the `.xml` file, I will attach the method that I used for generating the route file for your information.
```
def OVRoute_crowded(
n=500,
pois = {
'1_3': 0.3,
'3_1': 0.3,
},
crowdedTo=True, # pois are destination if True, origin otherwise
):
now = datetime.datetime.now()
# Check p1 and p2 are properly set
assert (isinstance(pois,dict)),\
"Input argument `pois` should be a form of dict"
assert (p >= 0 for p in pois.values()), \
"All given probabilities should be non-negative"
assert (sum(pois.values()) < 1), \
"Given probabilities p1 or p2 is too high. They should be low such that p1 + p2 > 1"
tazs = []
for i in range(5):
for j in range(5):
tazs.append(f'{i}_{j}')
tazWeights = {taz: \
(pois[taz] if taz in pois.keys() \
else (1 - sum(pois.values())) / (len(tazs) - len(pois))) \
for taz in tazs}
ods = {od: 0 for od in product(tazs, repeat=2)}
for i in range(n):
taz1 = random.choice(tazs)
taz2 = random.choices(list(tazWeights.keys()),
weights=tazWeights.values())[0]
while taz1 == taz2:
taz1 = random.choice(tazs)
if crowdedTo == True: # treat taz2 as destination
ods[(taz1, taz2)] += 1
else: # treat taz1 as destination
ods[(taz2, taz1)] += 1
with open(OD_CROWDED_FILE, 'w') as f:
f.write(f'''<?xml version="1.0" encoding="UTF-8"?>
<!-- generated on {now.strftime('%Y-%m-%d %H:%M:%S')} by OVRoute_crowded() from LaneRPM/utils.py -->
<data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://sumo.dlr.de/xsd/datamode_file.xsd">
''')
f.write(' <interval id="DEFAULT_VEHTYPE" begin="0" end="1">\n')
for od, value in ods.items():
f.write(f' <tazRelation from="{od[0]}" to="{od[1]}" count="{value}"/>\n')
f.write(f''' </interval>
</data>''')
cmds = [
f'od2trips -v --taz-files {TAZ_FILE} --tazrelation-files {OD_CROWDED_FILE} -o {ODTRIP_FILE}',
f'duarouter --net-file {NET_FILE} --route-files {ODTRIP_FILE} --routing-algorithm "CH" --output-file {OV_ODROUTE_CROWDED_FILE}',
]
for cmd in cmds:
subprocess.run(cmd,shell=True)
custom_print('OV routes are randomly generated with weighted od matrix')
return OV_ODROUTE_CROWDED_FILE ```
I am eager to resolve this error that kept disrupting my simulation.
Thank you for reading this lengthy mail.
Looking forward to hearing from you soon.
