Example 1: matplotlib legend
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 20, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, "-b", label="sine")
plt.plot(x, y2, "-r", label="cosine")
plt.legend(loc="upper left")
plt.ylim(-1.5, 2.0)
plt.show()
Example 2: add manual legend matlab
h1=plot([1:10],'Color','r','DisplayName','This one');hold on;
h2=plot([1:2:10],'Color','b','DisplayName','This two');
h3=plot([1:3:10],'Color','k','DisplayName','This three');
legend([h1 h3],{'Legend 1','Legend 3'})
Example 3: legend matlab
x = linspace(0,10);
y1 = sin(x);
y2 = sin(0.9*x);
y3 = sin(0.8*x);
y4 = sin(0.7*x);
y5 = sin(0.6*x);
y6 = sin(0.5*x);
plot(x,y1,'DisplayName','sin(x)')
hold on
plot(x,y2,'DisplayName','sin(0.9x)')
plot(x,y3,'DisplayName','sin(0.8x)')
plot(x,y4,'DisplayName','sin(0.7x)')
plot(x,y5,'DisplayName','sin(0.6x)')
plot(x,y6,'DisplayName','sin(0.5x)')
hold off
lgd = legend;
lgd.NumColumns = 2;