CODEWITHSUNDEEP
matlabinterpolation
mehrzad
mehrzad

Reputation: 23

Interpolation between 3 variables and a value

I have a set of data including time and location x y z these data belong to a particle passing through a domain. I need to know the location at specific time.

According to the Matlab documentation:

Vq = interp3(X,Y,Z,V,Xq,Yq,Zq) returns interpolated values of a function of three variables at specific query points using linear interpolation.

I need to know the x y z of particle at specific time. Is there any function for this job in MATLAB?

Is it okay to interpolate each location one by one? I mean interpolate between t-x t-y and t-z?

Upvotes: 2

Views: 2033

Answers (1)

Dan
Dan

Reputation: 45752

It sounds like you're just after 3 1D interpolations assuming x, y and z are orthogonal components:

xi = interp1(T,X,ti)
yi = interp1(T,Y,ti)
zi = interp1(T,Z,ti)

where ti are the times you're looking to interpolate to, T, X, Y, Z are your full data vectors for each variable and [xi,yi,zi] form your interpolated points.

Upvotes: 2

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