Please Help.. How can I display a certain value in my plot?

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hgrlk
hgrlk 2021-4-8
评论： hgrlk 2021-4-13
Hello, I have a problem with my code.
My code gets some inputs then calculate the fuzzy membership function and gives the membership function graph. In the graph, I have a red cut-lined (--) plot which gives the calculated K parameter. But also I want to display the value of this in the graph. How can I do that with code?

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DGM
DGM 2021-4-8
编辑：DGM 2021-4-8
A simple way would be to use the legend itself, something like this:
x=linspace(0,2*pi,100);
y=sin(x);
xmark=pi/4;
clf
plot(x,y); hold on; grid on
h=plot([1 1]*xmark,[-1 1],'--k');
legend(h,sprintf('X = %f',xmark))

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