function?flow_choice（）

%???global?variation
global?ts;
global?con;
%*********************************************************
%???initial?map?:?5?nodes?5?links?destination?is?node?5!
%???init?OD?with?origin?demand:?5?nodes?and?30?time?span
od=zeros（530）;
od（11）=14;?od（12）=9;??????????????od（14）=13;
od（21）=14;?od（22）=10;?????????????od（24）=12;
od（41）=5;??od（42）=4;??od（43）=2;??od（44）=1;

%????initial?map?connection
con=[0?1?0?0?0
????0?0?2?3?0
????0?0?0?4?0
????0?0?0?0?5
????0?0?0?0?0];

%???init?time-space:?5?links?and?30?time?span?each?cell?has?struct:{influx?flow?cost}
%???init?link?state?structure
linkstate=struct（‘influx‘0‘flow‘0‘cost‘1）;
ts=cell（530）;
for?i_1=1:5
????for?j_1=1:30
????????ts{i_1j_1}=linkstate;
????end
end

%Test
%sp?=