Extract data from plot

10 Ansichten (letzte 30 Tage)
Vinay Srinivasan
Vinay Srinivasan am 18 Sep. 2020
Kommentiert: Vinay Srinivasan am 18 Sep. 2020
Hello all I have a plotted a graph with x=1 2 3 4 5 and y = 2 4 6 8 10. Now I want to mark y= 6.5 on the plot. How to do it. I have asked this question in a simple way but the actual data I have is so big. Hoping for suggestions Thanking you

Akzeptierte Antwort

esat gulhan
esat gulhan am 18 Sep. 2020
Maybe like this
clc;clear;
x=[1 2 3 4 5]; %x data
y =[2 4 6 8 10];%y data
yy=6.5 % y value you intend to reach
xx = interp1(y,x,yy,'spline') %interpolation type, i choose spline, but you can choose pchip,lineer etc...
plot(xx,yy,'o'); %plot value
hold on
plot(x,y,'r'); grid on; %plot x y datas
  3 Kommentare
esat gulhan
esat gulhan am 18 Sep. 2020
it depends what you want. yy is changeble. If you change yy=6.5 ,yy=6 it changes x =3, if you give yy =3 x will be 1.5.
If you write yy=[3 5 7] you see 1.5 2.5 3.5 three marks on graph.
Vinay Srinivasan
Vinay Srinivasan am 18 Sep. 2020
Ok thank you so much, it worked

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)

Kategorien

Mehr zu 2-D and 3-D Plots finden Sie in Help Center und File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by