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2013 Mar 02
3
if value is in vector, perform this function
...feed_days = seq(1,60,by=3.5)
Daphnia <- function(t,x,params){
C_D = x[2];
C_A = 0;
for(t %in% feed_days){
if t == TRUE {
C_A = 1.5
}
else{
C_A = 0
}}
gamma = params[1]; m_D = params[2]; K_q = params[3]; q_max = params[4];
M_D = m_D * C_D
I_A = (C_D * q_max * C_A) / (K_q + C_A)
r_D = gamma * I_A
return(
list(c(
- I_A,
r_D - M_D
)))
}
library(deSolve)
results <- ode(init, t, Daphnia, params, method = "lsoda")
Let me know if there's any other info that would be helpful and thanks very much for your help!
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