How to make labels for these quiver vector frames in python ?

Question

By labels I mean {X_1} frame , {Y_1} so on...
https://code.sololearn.com/c5K6e9h6X2BV/#py

Answer 1

OK now I got the labels working for each quiver arrow:

# label using same coords as quiver end point
ax.quiver(0, 0, 0, scale1, 0, 0, color='red')
ax.text(scale1, 0, 0, 'arrow1', fontsize=8, color='green')
ax.quiver(0, 0, 0, 0, scale1, 0, color='red')
ax.text(0, scale1, 0, 'arrow2', fontsize=8, color='blue')
ax.quiver(0, 0, 0, 0, 0, scale1, color='red')
ax.text(0, 0, scale1, 'arrow3', fontsize=8, color='purple')

parameters of the text() are
- 3 coordinates, I used the endpoints of the arrow
- and the text
- fontsize and color are optional, you may want to use same color as the arrow.

Enjoy ;)

Answer 2

Hey Zhenis,

I am not sure if this is what you had in mind, but based on the documentation of Axes3D, I was able to add a label to each ax like this:
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')

https://matplotlib.org/api/_as_gen/mpl_toolkits.mplot3d.axes3d.Axes3D.html

I made a lot of simplification on your code. Library imports were redundant and sometimes inconsistent, you see it works with only these imports:

import matplotlib.pyplot as plt
from math import pi, sin, cos
from numpy import matrix, double
from mpl_toolkits.mplot3d import Axes3D

; semicolon not needed at the end of lines

all symbols definitions seemed redundant (because they were later overridden by normal python variable declarations

so this is how it looks now, 135 lines instead of 222:
https://code.sololearn.com/cTLjDNcorlt8/#py

EDIT: code updated.