Euler's Method in Python: Predator-Prey Example 

Hi everyone, thanks for watching! Here's the link to the code on my Github in case you want to try it for yourself (also feel free to add me as a friend on Github if you want 🙂) : github.com/mikesaint-antoine/Comp_Bio_Tutorials/blob/main/numerical_methods/eulers_method_predator_prey.py

I had problems understanding the Euler numerical approx. for a "prey-predator" uni. programming project. but you explained perfectly for this matter. thank you !

Thank you for your explanation. It really helps me to understand my uni module!

Hi mike, I am running the simulation with the same variables as you, with a slightly modified code, but I am unable to figure out why when I plot the results, the prey population immediately dumps to 0 rather than increases? here is my code below, any pointers would be greatly appreciated # model 1 - exponential prey growth with type I functional response while x > 0 and y > 0 and t < tmax: dx = expo_growth(alpha, x) - f_type1(beta, x, y) dy = pred_growth_t1(delta, x, y) - pred_death(gamma, y) #update values x += dx * dt y += dy * dt t += dt # append values to lists prey_pop_m1.append(x) pred_pop_m1.append(y) t_m1.append(t)

Hi Mike, I have no experience coding, but I wanted to calculate the parameters to create a Prey-Predator model for data I have collected. Is there any simple way to do so using python?