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How can I include the legends within the for loop and how can I set the xticks in MATLAB?

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I have below the following data
Q = [16,32,64,128,256,512,1024];
VEC_5 = [0.2380 0.2380 0.2380 0.2380 0.2380 0.2380 0.2380];
VEC_10 = [1.1898 1.1898 0.2380 0.2380 0.2380 0.2380 0.2380];
VEC_15 = [2.1416 2.1416 2.1416 1.1898 1.1898 0.2380 0.2380];
VEC_20 = [4.9970 3.0934 2.1416 2.1416 2.1416 1.1898 1.1898];
VEC_25 = [4.9970 4.9970 4.9970 3.0934 2.1416 2.1416 1.1898];
VEC_30 = [8.8043 5.9488 4.9970 4.9970 3.0934 2.1416 1.1898];
VEC_35 = [10.7079 8.8043 6.9007 4.9970 4.9970 2.1416 2.1416];
VEC_40 = [14.5152 10.7079 8.8043 6.9007 4.9970 3.0934 2.1416];
VEC_45 = [16.4188 11.6597 10.7079 8.8043 4.9970 4.9970 2.1416];
VEC_50 = [19.2742 14.5152 10.7079 8.8043 5.9488 4.9970 2.1416];
VEC_55 = [21.1779 16.4188 13.5634 10.7079 6.9007 4.9970 2.1416];
VEC_60 = [23.5574 16.4188 14.5152 10.7079 8.8043 4.9970 2.6175];
I drew them with semilogx function in Matlab as shown below:
as demonstrated in the code below:
VEC = [VEC_5;VEC_10;VEC_15;VEC_20;VEC_25;VEC_30;VEC_35;VEC_40;VEC_45;VEC_50;VEC_55;VEC_60];
figure
cmap = jet(12);
hold on
for k = 1:12
semilogx(Q,VEC(k,:), 'Color', cmap(k, :),'LineWidth',2,'MarkerEdgeColor','b');
end
hold off
xticks(Q)
xlabel('Q order');
ylabel('Coverage area');
legend('\theta_1_/_2 = 5','\theta_1_/_2 = 10','\theta_1_/_2 = 15','\theta_1_/_2 = 20','\theta_1_/_2 = 25','\theta_1_/_2 = 30','\theta_1_/_2 = 35','\theta_1_/_2 = 40','\theta_1_/_2 = 45','\theta_1_/_2 = 50','\theta_1_/_2 = 55','\theta_1_/_2 = 60')
grid on;
So, how can I include legends with the for loop instead of writing it outside? and the values in the x-axis are too close to each other how can I separate them to something like below? and how can I add markers on the lines?

Risposta accettata

Matt J
Matt J il 25 Set 2022
Modificato: Matt J il 25 Set 2022
So, how can I include legends with the for loop instead of writing it outside?
You are assuming here that the for loop is the only way to automatically generate the legend strings. Not so:
Q = [16,32,64,128,256,512,1024];
VEC_5 = [0.2380 0.2380 0.2380 0.2380 0.2380 0.2380 0.2380];
VEC_10 = [1.1898 1.1898 0.2380 0.2380 0.2380 0.2380 0.2380];
VEC_15 = [2.1416 2.1416 2.1416 1.1898 1.1898 0.2380 0.2380];
VEC_20 = [4.9970 3.0934 2.1416 2.1416 2.1416 1.1898 1.1898];
VEC_25 = [4.9970 4.9970 4.9970 3.0934 2.1416 2.1416 1.1898];
VEC_30 = [8.8043 5.9488 4.9970 4.9970 3.0934 2.1416 1.1898];
VEC_35 = [10.7079 8.8043 6.9007 4.9970 4.9970 2.1416 2.1416];
VEC_40 = [14.5152 10.7079 8.8043 6.9007 4.9970 3.0934 2.1416];
VEC_45 = [16.4188 11.6597 10.7079 8.8043 4.9970 4.9970 2.1416];
VEC_50 = [19.2742 14.5152 10.7079 8.8043 5.9488 4.9970 2.1416];
VEC_55 = [21.1779 16.4188 13.5634 10.7079 6.9007 4.9970 2.1416];
VEC_60 = [23.5574 16.4188 14.5152 10.7079 8.8043 4.9970 2.6175];
VEC = [VEC_5;VEC_10;VEC_15;VEC_20;VEC_25;VEC_30;VEC_35;VEC_40;VEC_45;VEC_50;VEC_55;VEC_60];
figure
cmap = jet(12);
hold on
for k = 1:12
plot(log2(Q),VEC(k,:), 'Color', cmap(k, :),'LineWidth',2,'MarkerEdgeColor','b');
end
hold off
xticks(log2(Q))
xticklabels(string(Q))
xlabel('Q order');
ylabel('Coverage area');
legstr="\theta_1_/_2 ="+(5:5:60);
legend(legstr)
grid on;
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