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# Use Euler's method to integrate simple one variable ODE
# Use program as template for more interesting models
# Note: produces slightly different output compared with
# example shown in class. Different values of b, dt, tlast
using Winston
a = 20
b = 0.5
c = 5
dt = 0.2
tlast = 20
iterations = integer(round(tlast/dt))
xall = zeros(Float64, (iterations, 1))
x = c
for i = 1:iterations
xall[i] = x
dxdt = a - b*x
x = x + dxdt*dt
end
time = dt*(0:iterations-1)'
figure
plot(time,xall)
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