MATLAB: Attempted to access colors(6); index out of bounds because numel(colors)=5

errorindexMATLABout of bounds

Hi, I tried executing this loop,
 colors = ['m';'y';'b';'g';'c']; 
loop_ind = 1; 
for k1 = 1:5 
 figure(4);
 linespec = colors(loop_ind); 
plot(x, y, linespec,  'LineWidth', 1);
loop_ind = loop_ind + 1;
hold on
end 
legend('-0.02','-0.01','0','0.01','0.02')
But I get an error,
 Attempted to access colors(6); index out of bounds because numel(colors)=5. Error in test_contact_ellipse (line 228)
linespec = colors(loop_ind);
Now I'm getting the plot with the correct colors but the legend doesn't appear. How can I rectify this error.
Please give your suggestions.
Thanks

Best Answer

This is an example that plots in different colors with a matching legend:
c = [0 1 0;  1 0 0;  0 0 1;  1 0 1;  0 1 1];
x = linspace(0,2*pi);
figure(4)
hold on
for k1 = 1:size(c,1)
    plot(x, sin(x*k1)+k1, 'Color', c(k1,:))   
end
hold off
grid
legend('Color 1', 'Color 2', 'Color 3', 'Color 4', 'Color 5')
Adapt it as necessary to your application.
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