Created
January 24, 2017 20:13
-
-
Save ronisbr/99cc40134d9a5551738e22622b47c3f4 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
importall Base | |
import RecursiveArrayTools.recursivecopy! | |
using DiffEqBase | |
using OrdinaryDiffEq | |
type SimType{T} <: AbstractArray{T,1} | |
x::Array{T,1} | |
f1::T | |
end | |
function SimType{T}(::Type{T}, length::Int64) | |
return SimType{T}(zeros(length), T(0)) | |
end | |
function SimType{T}(S::SimType{T}) | |
return SimType(T, length(S.x)) | |
end | |
function SimType{T}(S::SimType{T}, dims::Dims) | |
return SimType(T, prod(dims)) | |
end | |
similar{T}(A::SimType{T}) = begin | |
R = SimType(A) | |
R.f1 = A.f1 | |
R | |
end | |
similar{T}(A::SimType{T}, ::Type{T}, dims::Dims) = begin | |
R = SimType(A, dims) | |
R.f1 = A.f1 | |
R | |
end | |
done(A::SimType, i::Int64) = done(A.x,i) | |
eachindex(A::SimType) = eachindex(A.x) | |
next(A::SimType, i::Int64) = next(A.x,i) | |
start(A::SimType) = start(A.x) | |
length(A::SimType) = length(A.x) | |
ndims(A::SimType) = ndims(A.x) | |
size(A::SimType) = size(A.x) | |
recursivecopy!(B::SimType, A::SimType) = begin | |
recursivecopy!(B.x, A.x) | |
B.f1 = A.f1 | |
end | |
getindex( A::SimType, i::Int...) = (A.x[i...]) | |
setindex!(A::SimType, x, i::Int...) = (A.x[i...] = x) | |
function f(t,u,du) | |
display(t) | |
du[1] = -0.5*u[1] + u.f1 | |
du[2] = -0.5*u[2] | |
end | |
const tstop1 = [5.] | |
const tstop2 = [8.] | |
const tstop = [5.;8.] | |
function condition(t,u,integrator) | |
t in tstop1 | |
end | |
function affect!(integrator) | |
integrator.u.f1 = 1.5 | |
integrator.cache.tmp.f1 = 1.5 | |
end | |
save_positions = (true,true) | |
cb = DiscreteCallback(condition, affect!, save_positions) | |
function condition2(t,u,integrator) | |
t in tstop2 | |
end | |
function affect2!(integrator) | |
integrator.u.f1 = -1.5 | |
integrator.cache.tmp.f1 = -1.5 | |
end | |
save_positions = (false,true) | |
cb2 = DiscreteCallback(condition2, affect2!, save_positions) | |
cbs = CallbackSet(cb,cb2) | |
u0 = SimType{Float64}([10;10], 0.0) | |
prob = ODEProblem(f,u0,(0.0,10.0)) | |
sol = solve(prob,Tsit5(),callback = cbs, tstops=tstop, dtmin=0.5) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment