有没有办法可以使用 Matplotlib plot 数组的不同元素？

Question

I have the following array:

popul_num = np.array([200, 100, 0, 0])

Each element of the array represents the number of Enzyme, substrate, Enzyme-substrate complex and product in the system.

I have written code to simulate the following reactions over time and update popul_num to change the values of each entity as it is either consumed or produced:

E + S --> ES

ES --> E + S

ES --> E + P

The functions then update the popul_num array with new values according to the above reactions having happened.

I'm trying to use Matplotlib to plot a line graph of the changes in entity numbers over time as a result of the above reactions occurring

I've tried calling plt.plot once for each index of the array:

plt.plot(popul_num[i]) # i in place of each index 

and I've tried:

plt.plot(popul_num[0:3]) 

but both methods always just return a one line plot, what am I doing wrong?

Cheers

Answer 1

You need to store the new state rather than updating it.

popul_num = np.array([200, 100, 0, 0])

#after single reaction

popul_num = np.array([200, 100, 0, 0], [300, 50, 2, 4])

# now plot 4 separate graphs

for i in range(4):
 plt.plot(list(enumerate(popul_num[:, i])))

plt.show()