inst/tests/automatic/runit.TwopParallel_constantInput.R In SoilR: Models of Soil Organic Matter Decomposition

```# This test function is automatically produced by the python script:/home/mm/SoilR/RPackages/SoilR/pkg/inst/tests/automatic/Rexample.py
test.TwopParallel_constantInput=function(){
require(RUnit)
t_start=0
t_end=2
tn=100
tol=.02/tn
print(tol)
timestep=(t_end-t_start)/tn
t=seq(t_start,t_end,timestep)
A=new("ConstLinDecompOp",matrix(
nrow=2,
ncol=2,
c(
-1/20,  0,
0,  -1/30
)
))
c01=3
c02=2
inputrates=new("TimeMap",t_start,t_end,function(t){return(matrix(
nrow=2,
ncol=1,
c(
0.100000000000000,  0.200000000000000
)
))})
Y=matrix(ncol=2,nrow=length(t))
Y[,1]=c01*exp(-t/20) + 2.0 - 2.0*exp(-t/20)
Y[,2]=c02*exp(-t/30) + 6.0 - 6.0*exp(-t/30)
R=matrix(ncol=2,nrow=length(t))
R[,1]=c01*exp(-t/20)/20 + 0.1 - 0.1*exp(-t/20)
R[,2]=c02*exp(-t/30)/30 + 0.2 - 0.2*exp(-t/30)
mod=GeneralModel(
t,
A,
c(
c01,
c02
),
inputrates,
deSolve.lsoda.wrapper
)
Yode=getC(mod)
Rode=getReleaseFlux(mod)
#begin plots
lt1=2
lt2=4
pdf(file="runit.TwopParallel_constantInput.pdf",paper="a4")
m=matrix(c(1,2,3,4),4,1,byrow=TRUE)
layout(m)
plot(t,Y[,1],type="l",lty=lt1,col=1,ylab="Concentrations",xlab="Time")
lines(t,Yode[,1],type="l",lty=lt2,col=1)
lines(t,Y[,2],type="l",lty=lt1,col=2)
lines(t,Yode[,2],type="l",lty=lt2,col=2)
legend(
"topright",
c(
"anlytic sol for pool 1",
"numeric sol for pool 1",
"anylytic sol for pool 2",
"numeric sol for pool 2"
),
lty=c(lt1,lt2),
col=c(1,1,2,2)
)
plot(t,R[,1],type="l",lty=lt1,col=1,ylab="Respirationfluxes",xlab="Time",ylim=c(min(R),max(R)))
lines(t,Rode[,1],type="l",lty=lt2,col=1)
lines(t,R[,2],type="l",lty=lt1,col=2)
lines(t,Rode[,2],type="l",lty=lt2,col=2)
legend(
"topright",
c(
"anlytic sol for pool 1",
"numeric sol for pool 1",
"anylytic sol for pool 2",
"numeric sol for pool 2"
),
lty=c(lt1,lt2),
col=c(1,1,2,2)
)
dev.off()
# end plots
# begin checks
checkEquals(
Y,
Yode,
"test numeric solution for C-Content computed by the ode mehtod against analytical",
tolerance = tol,
)
checkEquals(
R,
Rode,
"test numeric solution for Respiration computed by the ode mehtod against analytical",
tolerance = tol,
)

}
```

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SoilR documentation built on May 29, 2017, 10:57 a.m.