figure; surf(data); shading interp; % Smooths the colors colorbar; title('3D Surface Plot of Xnxn Matrix'); xlabel('Columns'); ylabel('Rows'); zlabel('Values'); A lighter alternative to surf when you have large n (e.g., n > 200).
sparse_matrix = speye(1000); % 1000x1000 identity (sparse) figure; spy(sparse_matrix); title('Sparsity Pattern of Xnxn Matrix'); PDFs of large surface plots can exceed 50 MB. Use: xnxn matrix matlab plot pdf download free
% FREE_SCRIPTS/xnxn_matrix_plot_pdf.m % Author: Open Source MATLAB Community % Purpose: Generate an xnxn matrix, plot it, and export to PDF. clear; close all; clc; figure; surf(data); shading interp; % Smooths the colors
One of the most common yet challenging tasks for students and professionals is visualizing these large square matrices—turning raw numerical data into meaningful plots—and then exporting those results into a shareable for reports, theses, or presentations. % Smooths the colors colorbar