Filter löschen
Filter löschen

Find value of second dependent variable corresponding to new value of independent variable based on defined array

2 Ansichten (letzte 30 Tage)
I have set of array with independent variable 'X' and dependent variable 'Y'. I want to find value of 'Y'given new value of 'X'. i.e. X=normrand(0,1,100,1); Y=1+0.2*X; % it can be any unknown relationship. Equation is written just for example Find value of Y for X=[0.001 1.89 -0.45 1.12]? Thanks

Akzeptierte Antwort

Stephen23
Stephen23 am 13 Sep. 2016
Bearbeitet: Stephen23 am 13 Sep. 2016
This is exactly what interp1 does:
X = normrnd(0,1,10,1)
Y = 1+0.2*X
% sort:
[Xs,idx] = sort(X);
Ys = Y(idx);
% interpolate:
Xo = [0.001,1.89,-0.45,1.12];
Yo = interp1(X,Y,Xo)
Note that you will need to explicitly specify the behavior if you want it to extrapolate as well as interpolate. You can also choose the interpolation method. Read the documentation to know more.

Weitere Antworten (0)

Kategorien

Mehr zu Interpolation 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