plot point

Hi, If i take time in x-axis, x=[10 20 30 40 50 60 70 80 90]; and y=[0.001 .05 0.1 .16 .7 .8 .01 .5 .3]; after plotting this, i want to mark a point in y-axis at x=65; Pls help me. Thanks in advance

Answer 1

[Paulo Silva]

x=[10 20 30 40 50 60 70 80 90];
y=[0.001 .05 0.1 .16 .7 .8 .01 .5 .3];
plot(x,y)
hold on
yi = interp1(x,y,65); 
plot(65,yi,'r*')

Answer 2

[Gerd]

Hi, use the interp1 function

result = interp1(x,y,65)