I got some sample codes from this
I am not sure why plotting some with wrong legends : (
clear;clc;close all;h = [0.05 0.025 0.0125 0.00625 0.003125];A = [0.0103 0.005 0.0019 0.0121 0.1031];B = [0.0103 0.0052 0.0026 0.0012 0.0011];C = [0.0103 0.0052 0.0026 0.0013 0.0011];% Plot filtered data
figure();%axis([0 3.5e-3 0 1e-3]);
loglog(h, A,'k-'); % plot
hold on;scatter(h,A,'k','*');loglog(h, B,'k--');scatter(h,B,'k','d');loglog(h, C,'k:');scatter(h,C,'k','o');xlabel('grid space [m]')ylabel('Error Value');title('Relation of Error Value and Grid Spacing [m]')legend('A','B','C');hold off;grid on;
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