Python | Colored Barbs Plot

In this tutorial, we are going to learn how to create a contour plot using matplotlib in Python?
Submitted by Anuj Singh, on August 18, 2020

The default barbs plots are black. Adding color will improve visualization and therefore, similar to heatmap and scatter plot, we can add color maps in these barbs plot as well.

The following example illustrates how we can use the object-oriented style in matplotlib for our operation.

Illustrations:

Colored Barbs Plot (1)

Colored Barbs Plot (2)

Colored Barbs Plot (3)

Colored Barbs Plot (4)

Python code for colored barbs plot

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(-5, 5, 5)
X, Y = np.meshgrid(x, x)
U, V = 12 * X, 12 * Y

data = [(-1.5, .5, -6, -6),
        (1, -1, -46, 46),
        (-3, -1, 11, -11),
        (1, 1.5, 80, 80),
        (0.5, 0.25, 25, 15),
        (-1.5, -0.5, -5, 40)]

data = np.array(data, dtype=[('x', np.float32), ('y', np.float32),('u', np.float32), ('v', np.float32)])

fig, ax = plt.subplots()
ax.barbs(X,Y,U,V)
plt.show()
ax.set_title('Default Barbs Plot')

fig, ax = plt.subplots()
plt.inferno()
ax.barbs(X, Y, U, V, np.sqrt(U ** 2 + V ** 2), fill_empty=True, 
rounding=False,
sizes=dict(emptybarb=0.25, 
spacing=0.2, height=0.3))
ax.set_title('Coloured Barbs Plot')

fig1, axs1 = plt.subplots(nrows=2, figsize=(5,8))
axs1[0].barbs(X, Y, U, V)
plt.winter()
axs1[1].barbs(
    X, Y, U, V, np.sqrt(U ** 2 + V ** 2), fill_empty=True, rounding=False,
    sizes=dict(emptybarb=0.25, spacing=0.2, height=0.3))
plt.show()

Output:

Output is as Figure





Comments and Discussions

Ad: Are you a blogger? Join our Blogging forum.





Languages: » C » C++ » C++ STL » Java » Data Structure » C#.Net » Android » Kotlin » SQL
Web Technologies: » PHP » Python » JavaScript » CSS » Ajax » Node.js » Web programming/HTML
Solved programs: » C » C++ » DS » Java » C#
Aptitude que. & ans.: » C » C++ » Java » DBMS
Interview que. & ans.: » C » Embedded C » Java » SEO » HR
CS Subjects: » CS Basics » O.S. » Networks » DBMS » Embedded Systems » Cloud Computing
» Machine learning » CS Organizations » Linux » DOS
More: » Articles » Puzzles » News/Updates


© https://www.includehelp.com some rights reserved.