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Re: [sumo-user] --binomial option
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use option --binomial 1 --period 2 --flows N
Yes, I already tried the
--binomial and understand how it works. But because I need to create flow instead of trips, I have to use --flow option.
I need to create files, with a certain number of flows, fromJunction toJunction, each with the probability of 0.5.
The command line I use is
python myRandomTrips.py -n eichstaett.net.xml -o ./Trips$j/RoutingSim$i.rou.xml --random true -b 0 -e 500 --binomial --flow $j --junction-taz true
how should I fix it to have something like this?
<flow id="0#0" begin="0" end="500" probability="0.5" fromJunction="1223" toJunction="2034"/>
<flow id="1" begin="0" end="500" probability="
0.5
" fromJunction="1232" toJunction="1839"/>
<flow id="2" begin="0" end="500" probability="
0.5
" fromJunction="1496" toJunction="2294"/>
<flow id="3" begin="0" end="500" probability="
0.5
" fromJunction="909" toJunction="1232"/>
<flow id="4" begin="0" end="500" probability="
0.5
" fromJunction="1520" toJunction="2097"/>
<flow id="5" begin="0" end="500" probability="
0.5
" fromJunction="2160" toJunction="1979"/>
<flow id="6" begin="0" end="500" probability="
0.5
" fromJunction="1348" toJunction="1438"/>
<flow id="7" begin="0" end="500" probability="
0.5
" fromJunction="1341" toJunction="785"/>
<flow id="8" begin="0" end="500" probability="
0.5
" fromJunction="461" toJunction="2284"/>
<flow id="9" begin="0" end="500" probability="
0.5
" fromJunction="1801" toJunction="2284"/>
This is, because you are setting the option --binomial 2.
The whole point of this option is to enable probabilistic departures with a per-second probability > 1. (The probability option needs to be smaller than 1 or you will get deterministic behavior). The probability is divided by the value given to --binomial and the number of flows is increased instead.
I tried it with different numbers, that also creates two flow for the same origin-destination pair. e.g. if I put 2 it gives me 4, and if I put 4 it gives me 8 which is 4 pairs. each pair are identical but with a different id.
<flow id="0#0" begin="0" end="500" probability="0.5" fromJunction="1951" toJunction="1131"/>
<flow id="0#1" begin="0" end="500" probability="0.5" fromJunction="1951" toJunction="1131"/>
<flow id="1#0" begin="0" end="500" probability="0.5" fromJunction="1968" toJunction="1931"/>
<flow id="1#1" begin="0" end="500" probability="0.5" fromJunction="1968" toJunction="1931"/>
<flow id="2#0" begin="0" end="500" probability="0.5" fromJunction="2495" toJunction="2496"/>
<flow id="2#1" begin="0" end="500" probability="0.5" fromJunction="2495" toJunction="2496"/>
<flow id="3#0" begin="0" end="500" probability="0.5" fromJunction="2141" toJunction="818"/>
<flow id="3#1" begin="0" end="500" probability="0.5" fromJunction="2141" toJunction="818"/>
This is due to your use of --flow 1. If you want more origin-destination pairs you need to increase the number of flows.
Hello,
When I use
--binomial with rondomTrip.py to create flows, it creates two exact same trips as the output.
My command line is:
python randomTrips.py -n eichstaett.net.xml -o RoutingSim1.rou.xml --random true -b 0 -e 500 --binomial 2 --flow 1 --junction-taz true
and this is the output:
<flow id="0#0" begin="0" end="500" probability="0.5" fromJunction="1955" toJunction="144"/>
<flow id="0#1" begin="0" end="500" probability="0.5" fromJunction="1955" toJunction="144"/>
I was wondering why it does that and how can I fix it.
Thanks,
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--
RAZ
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--
RAZ
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