Setting legend of a plot

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Shahriar Shafin
Shahriar Shafin 2024-1-30
评论： Star Strider 2024-1-31
How do I set up a legend like this(two curves one legend then some gap)??
  2 个评论
VBBV
VBBV 2024-1-31
The plots you show have custom legends.
Try this link available in FEX where you can change the legend layout and behavior as you wanted
https://in.mathworks.com/matlabcentral/fileexchange/31092-legendflex-m-a-more-flexible-customizable-legend
Dyuman Joshi
Dyuman Joshi 2024-1-31
Ran in:
Why not plot an empty line along side and use a blank as its legend entry?
x = 0:0.01:10;
figure
plot(x, sin(x))
hold on
plot(x,cos(x));
plot(x,floor(x/5))
plot(x,NaN(size(x)))
xlim([-1 11])
str = ["sin" "cos" "custom" ""];
legend(str, 'NumColumns', 2)

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采纳的回答

Star Strider
Star Strider 2024-1-30
Set the original legend to 'Location','NE' and then use:
legend('boxoff')
Also, see Position Multiple Axes in Figure if you have not done so already.
  6 个评论
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Star Strider
Star Strider 2024-1-31
As always, my pleasure!

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更多回答（2 个）

Image Analyst
Image Analyst 2024-1-30
I think you'd have to build it up manually with the plot and text functions.
VINAYAK LUHA
VINAYAK LUHA 2024-1-30
Ran in:
Hello Shahriar,
It looks like you want to overlay two sets of axes, with the larger one encompassing the smaller, and include a common legend for both in MATLAB. To accomplish this task, adhere to the following instructions:
  • First, Create an axes called "larger" and add plots to it.
  • Next, define a another axes called "smaller" to be positioned within the "larger" axes.
  • Finally,to create a common legend, plot invisible lines and assign the legends to them.
Here's the MATLAB code for your reference:
x = linspace(1, 10, 100);
y1 = log(x);
y2 = log(x.^2);
y3 = log(x.^3);
y4 = log(x.^4);
figure;
larger = axes;
plot(larger, x, y1, 'r-', x, y2, 'b-', x, y3, 'g-', x, y4, 'k-');
hold(larger, 'on');
smaller = axes('Position', [0.2 0.6 0.25 0.25]);
plot(smaller, x, y1, 'r-', x, y2, 'b-', x, y3, 'g-', x, y4, 'k-');
h1 = plot(larger, NaN, NaN, 'r-');
h2 = plot(larger, NaN, NaN, 'b-');
h3 = plot(larger, NaN, NaN, 'g-');
h4 = plot(larger, NaN, NaN, 'k-');
legend(larger, [h1, h2, h3, h4], {'log(x)', 'log(x^2)', 'log(x^3)', 'log(x^4)'});
Hope this helps you to understand how to have a common legend for two nested axes
Regards
Vinayak Luha

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