CODEWITHSUNDEEP
matlab
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Reputation: 2299

Change the legend of a Matlab figure

I would like to change the legend style of the following picture generated in Matlab:

x1=-5;
x2=5;
y1=-5;
y2=5;
x = [x1, x2, x2, x1, x1];
y = [y1, y1, y2, y2, y1];
fill(x,y,'b')
legend('A')

enter image description here

As you can see the legend displays a blue rectangle. What I would like is a filled blue circle in place of the rectangle as if the picture was generated as a scatter plot. How can I obtain that?

Upvotes: 2

Views: 106

Answers (2)

Adiel
Adiel

Reputation: 3071

@Bebs has a nice solution.

Another suggest is to change directly the legend icon:

[a,b] = legend('A');
b(2).Xdata = sin(-pi:0.1:pi)/10+0.4;   % you can play with numbers to set size and location of circle
b(2).Ydata = cos(-pi:0.1:pi)/5+0.5;

Now you can set some other properties:

b(2).LineWidth = 1;         % thicker line
b(2).FaceColor = [1 1 1];   % white fill
b(2).EdgeColor = [0 0 1];   % blue edge

enter image description here

Upvotes: 3

alpereira7
alpereira7

Reputation: 1550

I would suggest to add a fictive value with hold on; p = plot(NaN, NaN, 'b.', 'MarkerSize', 15); then legend this specific "fake" plot with: legend(p, 'A');

x1=-5;
x2=5;
y1=-5;
y2=5;
x = [x1, x2, x2, x1, x1];
y = [y1, y1, y2, y2, y1];
fill(x,y,'b');
hold on; p = plot(NaN, NaN, 'b.', 'MarkerSize', 15);
legend(p, 'A')

fill and legend

Upvotes: 3

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