Passing parameter lists

[magbenji]

I've been trying to get diffeqr to work a passed parameter list and I get the following:

f <- function(u,p,t) {
   with(as.list(p), {
   du1 = p1*(u[2]-u[1])
   du2 = u[1]*(p2-u[3]) - u[2]
  du3 = u[1]*u[2] - p3*u[3]
  return(list(c(du1,du2,du3)))
 })
}

u0 <- c(1.0,0.0,0.0)
tspan <- c(0.0,100.0)
p <- list(p1=10.0,p2=28.0,p3=8/3)
prob <- de$ODEProblem(f, u0, tspan, p)

Which produces this error:

Error: Error happens in Julia.
MethodError: Cannot convert an object of type Array{Float64,1} to an object of type Float64
Closest candidates are:
convert(::Type{T}, !Matched::ArrayInterface.StaticInt{N}) where {T<:Number, N} at /Users/bridenhour/.julia/packages/ArrayInterface/q5Rwc/src/static.jl:18
convert(::Type{T}, !Matched::VectorizationBase.LazyMulAdd{M,O,I}) where {M, O, I, T<:Number} at /Users/bridenhour/.julia/packages/VectorizationBase/AzQKz/src/lazymul.jl:17
convert(::Type{T}, !Matched::VectorizationBase.Vec{W,S}) where {T<:Number, S, W} at /Users/bridenhour/.julia/packages/VectorizationBase/AzQKz/src/llvm_intrin/conversion.jl:96
...
Stacktrace:
[1] setindex!(::Array{Float64,1}, ::Array{Float64,1}, ::Int64) at ./array.jl:847
[2] _unsafe_copyto!(::Array{Float64,1}, ::Int64, ::Array{Any,1}, ::Int64, ::Int64) at ./array.jl:257
[3] unsafe_copyto! at ./array.jl:311 [inlined]
[4] _copyto_impl! at ./array.jl:335 [inlined]
[5] copyto! at ./array.jl:321 [inlined]
[6]

[magbenji]

I figured out that the error was being produced by calling return(list(c(...))); if you just use return(c(...)), things work as expected. The JIT compilation still fails with:

Error: Error happens in Julia.
KeyError: key 'p' not found
Stacktrace:
[1] getindex at ./dict.jl:467 [inlined]
[2] #6 at ./none:0 [inlined]
[3] iterate at ./generator.jl:47 [inlined]
[4] join(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Base.Generator{String,ModelingToolkit.var"#6#7"}, ::String) at ./strings/io.jl:294
[5] join(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Base.Generator{String,ModelingToolkit.var"#6#7"}) at ./strings/io.jl:293
[6] sprint(::Function, ::Base.Generator{String,ModelingToolkit.var"#6#7"}; context::Nothing, sizehint::Int64) at ./strings/io.jl:105
[7] sprint at ./strings/io.jl:101 [inlined]
[8] join at ./strings/io.jl:300 [inlined]
[9] map_subscripts at /Users/bridenhour/.julia/packages/ModelingToolkit/Q7n8K/src/variables.jl:16 [inlined]
[10] _broadcast_getindex_evalf at ./broadcast.jl:648 [inlined]
[11] _broadcast_getindex at ./broadcast.jl:621 [inlined]
[12] #19 at ./broadcast.jl:1046 [inlined]
[13] ntuple at ./ntuple.jl:41 [inlined]
[14] copy at ./

However, it sounded like failure of the JIT routine might have been expected when passing a list of parameters. I will mark this closed.