Star Constellation Pattern using Python

 

import numpy as np

import matplotlib.pyplot as plt

num_stars = 30  

x_vals = np.random.uniform(0, 10, num_stars)

y_vals = np.random.uniform(0, 10, num_stars)

sizes = np.random.randint(20, 100, num_stars)

num_connections = 10

connections = np.random.choice(num_stars, (num_connections, 2), replace=False)

fig, ax = plt.subplots(figsize=(8, 8), facecolor='black')

ax.set_facecolor("black")

ax.scatter(x_vals, y_vals, s=sizes, color='white', alpha=0.8)

for start, end in connections:

    ax.plot([x_vals[start], x_vals[end]], [y_vals[start], y_vals[end]], 

            color='white', linestyle='-', linewidth=0.8, alpha=0.6)

ax.set_xticks([])

ax.set_yticks([])

ax.set_frame_on(False)

plt.title("Star Constellation Pattern", fontsize=14, fontweight="bold", color="white")

plt.show()

#source code --> clcoding.com

Code Explanation:

Import Required Libraries

import numpy as np

import matplotlib.pyplot as plt

numpy: Used for generating random numbers (star positions, sizes, and connections).

matplotlib.pyplot: Used for creating the star constellation plot.

Define Number of Stars

num_stars = 30  

Specifies the total number of stars in the pattern.

Generate Random Star Positions

x_vals = np.random.uniform(0, 10, num_stars)

y_vals = np.random.uniform(0, 10, num_stars)

Generates num_stars random x and y coordinates.

np.random.uniform(0, 10, num_stars): Creates values between 0 and 10 to place stars randomly in a 10x10 grid.

Assign Random Star Sizes

sizes = np.random.randint(20, 100, num_stars)

Assigns a random size to each star.

np.random.randint(20, 100, num_stars): Generates star sizes between 20 and 100, making some stars appear brighter than others.

Create Random Connections Between Stars

num_connections = 10

connections = np.random.choice(num_stars, (num_connections, 2), replace=False)

num_connections = 10: Specifies that 10 pairs of stars will be connected with lines.

np.random.choice(num_stars, (num_connections, 2), replace=False):

Randomly selects 10 pairs of star indices (from 0 to num_stars-1).

Ensures that each pair is unique (replace=False).

These pairs form the constellation-like connections.

Create the Figure and Set Background

fig, ax = plt.subplots(figsize=(6, 6), facecolor='black')

ax.set_facecolor("black")

plt.subplots(figsize=(6,6)): Creates a 6x6 inches figure.

facecolor='black': Sets the entire figure background to black.

ax.set_facecolor("black"): Ensures the plot area (inside the figure) is also black.

Plot Stars as White Dots

ax.scatter(x_vals, y_vals, s=sizes, color='white', alpha=0.8)

Plots stars using scatter():

x_vals, y_vals: Star positions.

s=sizes: Varying sizes of stars.

color='white': Stars are white.

alpha=0.8: Adds slight transparency to blend the stars naturally.

Draw Lines to Connect Some Stars (Constellation Effect)

for start, end in connections:

    ax.plot([x_vals[start], x_vals[end]], [y_vals[start], y_vals[end]], 

            color='white', linestyle='-', linewidth=0.8, alpha=0.6)

Loops through each selected star pair (start, end).

Uses ax.plot() to draw a faint white line between the two stars.

color='white': Makes lines visible on a black background.

linestyle='-': Uses solid lines.

linewidth=0.8: Thin lines for a delicate look.

alpha=0.6: Faint transparency to make lines blend smoothly.

Remove Axis Labels for a Clean Look

ax.set_xticks([])

ax.set_yticks([])

ax.set_frame_on(False)

Removes x and y ticks (ax.set_xticks([]), ax.set_yticks([])) so no numerical labels are shown.

Removes plot frame (ax.set_frame_on(False)) to give a seamless night-sky effect.

Add a Title and Display the Plot

plt.title("Star Constellation Pattern", fontsize=14, fontweight="bold", color="white")

plt.show()

Adds a title "Star Constellation Pattern" in white.

plt.show() displays the final constellation pattern.