How can I make that when I plot a function (based on a np.array) certain values have their coordinates in the plot? I know how to change color and other little things with code lines like:
line1, = plt.plot(t, f, '*-', label='force', color='#4F81BD') # blue
line2, = plt.plot(t, a, 'o-', label='acceleration', color='#C0504D') # red
but for example if I have a "peak" in the plot line, I don't know how to make their coordinates to appear in the same plot
This code snippet might help you:
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
x=[1,2,3,4,5,6,7,8,9,10]
y=[1,1,1,2,10,2,1,1,1,1]
line, = ax.plot(x, y)
ymax = max(y)
xpos = y.index(ymax)
xmax = x[xpos]
#Labeling the graph (ymax+1 is defining the distance from the word to the point)
ax.annotate('local max', xy=(xmax, ymax), xytext=(xmax, ymax+1))
ax.set_ylim(0,20)
plt.show()
Output:
I hope I could help you out a bit.
np.array, so I think you must use it instead of list
