library(deSolve) ## Chaos in the atmosphere Q=c(1,2,3,4,5,6,7,8,9,10) print(Q[4]) Lorenz <- function(t, state, parameters) { with(as.list(c(state, parameters)), { #dX <- a * X + Y * Z*t #dY <- b * (Y - Z) r= dY = 10*c[t] #dZ <- -X * Y + c * Y - Z list(c(dY)) }) } parameters <- c(a = -8/3, b = -10) state <- c(Y = 0) times <- seq(0, 5, by = 1) out <- ode(y = state, times = times, func = Lorenz, parms = parameters) print(out)