64 lines
1.8 KiB
R
64 lines
1.8 KiB
R
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# Reverse shooting
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options(digits=22)
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## Evolution
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x1_array_reverse_shooting <- c()
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x3_array_reverse_shooting <- c()
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a1_array_reverse_shooting <- c()
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a3_array_reverse_shooting <- c()
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s1_array_reverse_shooting <- c()
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s3_array_reverse_shooting <- c()
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l = length(a1_array_forward_shooting)
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x1_t = x1_array_forward_shooting[l]
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x3_t = x3_array_forward_shooting[l]
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comienzo = Sys.time()
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max = max(times_reverse_shooting)
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t=times_reverse_shooting[1]
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for(t in times_reverse_shooting){
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if((100*t/max) %in% seq(from=0, to=100, by=3)){
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print(paste(floor(100*t/max), "%", sep=""))
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#print("\n")
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}
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t_previous = t-stepsize
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a1_t = a1(t_previous)
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a3_t = a3(t_previous)
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s1_t = s1(t_previous)
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s3_t = s3(t_previous)
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guessmin = 0
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guessmax = x3_t
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x3_target = x3_t
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x3_t = dx3_reverse_shooting(t, guessmin, guessmax, x3_target, t_previous)
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# x3_t = x3_t - dx3(t-stepsize)*stepsize #
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x1_t = (x1_t - dx1(t-stepsize)*stepsize)/(1+r1_stepsize)
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## But then I can calulate s1, s3 again, and do another iteration.
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# for(i in c(1:10)){
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# # using the new x3_t
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# s3_t = s3(t_previous)
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# x3_t = dx3_reverse_shooting(t, guessmin, guessmax, x3_target)
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# x3_t
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# }
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# s1_t = s1(t_previous)
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# x1_t = (x1_t - dx1(t-stepsize)*stepsize)/(1+r_stepsize)
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a1_array_reverse_shooting <- c(a1_t, a1_array_reverse_shooting)
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a3_array_reverse_shooting <- c(a3_t, a3_array_reverse_shooting)
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s1_array_reverse_shooting <- c(s1_t, s1_array_reverse_shooting)
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s3_array_reverse_shooting <- c(s3_t, s3_array_reverse_shooting)
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x1_array_reverse_shooting <- c(x1_t, x1_array_reverse_shooting)
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x3_array_reverse_shooting <- c(x3_t, x3_array_reverse_shooting)
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}
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fin = Sys.time()
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fin-comienzo
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options(digits=7)
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x1_array_reverse_shooting[1] ## 10^11
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x3_array_reverse_shooting[1]
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# View(x1_array_reverse_shooting)
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