Hollow Square Pattern Plot using python

 

import matplotlib.pyplot as plt

rows = 5

cols = 5

plt.figure(figsize=(6, 6))

for i in range(rows):

    for j in range(cols):

        if i == 0 or i == rows - 1 or j == 0 or j == cols - 1:

            plt.scatter(j, -i, s=800, c='orange')

           plt.xlim(-0.5, cols - 0.5)

plt.ylim(-rows + 0.5, 0.5)

plt.axis('off')

plt.gca().set_aspect('equal', adjustable='datalim')

plt.title("Hollow Square Pattern Plot", fontsize=14)

plt.show()

#source code --> clcoding.com 

Code Explanation:

1. Importing Matplotlib

import matplotlib.pyplot as plt

This imports matplotlib.pyplot, which is used to create plots.

2. Defining the Dimensions of the Square

rows = 5

cols = 5

rows = 5: Sets the height of the square.

cols = 5: Sets the width of the square.

3. Initializing the Plot

plt.figure(figsize=(6, 6))

Creates a figure with a size of 6x6 inches.

Generating the Hollow Square

4. Using Nested Loops to Plot the Dots

for i in range(rows):

    for j in range(cols):

        if i == 0 or i == rows - 1 or j == 0 or j == cols - 1:

            plt.scatter(j, -i, s=800, c='red')

The outer loop (i) iterates over the rows.

The inner loop (j) iterates over the columns.

The if condition ensures that only border points are plotted:

i == 0 → Top row

i == rows - 1 → Bottom row

j == 0 → Left column

j == cols - 1 → Right column

plt.scatter(j, -i, s=800, c='red') places a red dot at the coordinates (j, -i).

s=800: Controls the size of the dots.

-i: Ensures that rows go downward.

Adjusting the Plot Appearance

5. Setting Axis Limits

plt.xlim(-0.5, cols - 0.5)

plt.ylim(-rows + 0.5, 0.5)

plt.xlim(-0.5, cols - 0.5): Ensures the square is centered horizontally.

plt.ylim(-rows + 0.5, 0.5): Ensures the square is fully visible vertically.

6. Removing Axes and Adjusting Aspect Ratio

plt.axis('off')

plt.gca().set_aspect('equal', adjustable='datalim')

plt.axis('off'): Removes grid lines and axis labels for a clean display.

plt.gca().set_aspect('equal', adjustable='datalim'): Ensures equal spacing between points.

7. Adding a Title

plt.title("Hollow Square Pattern Plot", fontsize=14)

Displays the title of the plot.

8. Displaying the Pattern

plt.show()

Renders and displays the hollow square pattern.