MATLAB: Legend for variable number of plots

figurelegendplotplotting

Hi, I am plotting a variable 'y' whose size is 'm-by-n' against 'x' whose size is 'm-by-1'. So, I get 'n' plots on the current figure. Now, how can I write insert legend without knowing the value of n. I mean, how do I give dynamic input to legend function.

plot(x,y)

legend('Mode 1','Mode 2','Mode 3',…'Mode n')

Best Answer

legend(arrayfun(@(mode) sprintf('Mode %d', mode), 1:size(y, 2), 'UniformOutput', false))

Would be one way of doing it.

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MATLAB: Number coding the plot beside color coding

It is likely not possible to do exactly that, however you can come close.

Try this:

x = [1 10 14 17];
y = randi([-40 -11], 4, 6);
figure
plot(x, y, '.-')
text(ones(1, size(y,2)), y(1,:), compose('%d', 1:size(y,2)))
lgndc = compose('%d Curve %d', (1:size(y,2)).'*[1 1]);
legend(lgndc, 'Location','SW')
ylim([-45 max(ylim)])

You will need to produce your own version of ‘lgndc’. Just precede each entry by the number of the curve.

MATLAB: Unable to hold subplot inside for loop

subplot(3,4,12)
hold on
for zz=1:I
    fg=dual_history{zz}; plot(fg(1,:))
end
hold off

Best Answer

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MATLAB: Number coding the plot beside color coding

MATLAB: Unable to hold subplot inside for loop

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