Vq = interp3(X, Y, Z, V, Xq, Yq, Zq)
Vq = interp3(V, Xq, Yq, Zq)
Vq = interp3(V)
Vq = interp3(V, k)
Vq = interp3(..., method)
Vq = interp3(..., method, extrapval)
| Parameter | Description |
|---|---|
| X, Y, Z | Sample grid points: vectors or meshgrid arrays. |
| V | Sample values: real or complex 3-D array. |
| Xq, Yq, Zq | Query points. |
| method | 'linear', 'nearest', 'cubic', 'makima', or 'spline'. |
| Parameter | Description |
|---|---|
| Vq | Interpolated values. |
interp3 interpolates 3-D gridded data using meshgrid conventions. The default grid is X=1:size(V,2), Y=1:size(V,1), Z=1:size(V,3).
The cubic-family methods use a native tensor-product four-point stencil, with linear fallback on dimensions that have fewer than four samples.
interp3(V) and interp3(V,k) refine the default grid. Grid vectors must be strictly monotonic.
V = reshape(1:8, [2 2 2]);
Vq = interp3(V, 1.5, 1.5, 1.5)V = reshape(1:8, [2 2 2]);
Vq = interp3(V, 1)x = 1:2;
y = 1:2;
z = 1:2;
[X,Y,Z] = meshgrid(x, y, z);
V = reshape(1:8, [2 2 2]);
Vq = interp3(X, Y, Z, V, 1.5, 1.5, 1.5, 'linear')V = reshape(1:8, [2 2 2]);
Vq = interp3(V, 0, 1.5, 1.5, 'linear', -1)