Include "star dot" in plot legend.

Question

matlabkid602 2018-2-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/380690-include-star-dot-in-plot-legend

评论： Star Strider 2018-2-4

I'm plotting three sets of data with the code

if true
  plot(x_1,y_1,x_2,y_2,x_3,y_3) %Layered plot
xlabel('X')
ylabel('Y')
title('Particle Trajectory')
legend('Particle 1','Particle 2','Particle 3')
end

The data set x_1,x_2 is just the origin 0,0 in every component.

How can I include a solid dot at the centre of the plot and include this in the legend?

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Answer 1

Star Strider 2018-2-4

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/380690-include-star-dot-in-plot-legend#answer_303396

在 MATLAB Online 中打开

I am not certain what you want to do.

Try this:

x = [-1 1 -1 1];
y = [-1 1 1 -1];
x1 = 0;
y1 = 0;
figure(1)
L1 = plot(x1, y1, 'pg', 'MarkerSize',10, 'MarkerFaceColor','g');
hold on
L2 = plot( x, y, 'ob', 'MarkerSize',10, 'MarkerFaceColor','b');
hold off
legend(L1, 'Centre')
Ax = gca;
Ax.XAxisLocation = 'origin';
Ax.YAxisLocation = 'origin';
axis([-1.5  1.5    -1.5  1.5])
grid on