How to find X Value given Y value and show the point on a plot
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I have an semilog plot below.
%
x = 0:1:25;
y = exp(-0.03*x);
figure;
semilogy(x,y);
%
I want to let the program calculate the x value when y=0.5 and indicate this point (x,0.5) on the plot with dashed lines connecting to the two axes. How do I achieve this?
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Accepted Answer
KSSV
on 9 Oct 2017
x = 0:1:25;
y = exp(-0.03*x);
figure;
semilogy(x,y);
%
yi = 0.5 ;
xi = interp1(y,x,yi) ;
hold on
semilogy(xi,yi,'*r')
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Coryn Melissa LLamoza Carabali
on 14 Oct 2020
yes! looking for both questions above. Anybody that can help with this ;(
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