Adding variables to legends

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Dan Lardner 2021-9-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1455819-adding-variables-to-legends

Hi,

I wish to add a variable to a legend which I have discovered how to do, however I would like to have the initial element within the legend untouched and add the variable to the second parameter within the legend.

This piece of code displays what I want displayed in the legend next to the bottom element. I also want to add the initial set of points above this one.

% Sets up variable to display in the legend
Legr2Lin_R5 = compose('y = bx^m, r^2 = %.3g', r2Pwr_R5);
legend(Legr2Lin_R5,'location','se')

If I use this piece of code I get both elements within the legend, but no variable value for the second element as in the code above.

loglog(x_R4,y_R4,x_R4,Ypwr_R4,'*'),xlabel('x'),ylabel('y')
title('Using y = bx^a')
legend('Data Points','y = bx^a')

The question, how do I have both elements displayed in the legend, but also have the variable value displayed next to the second element within the legend?

I have tried a couple of things, but nothing is coming close to working.