Curl Function for 3D data using meshgrid and interpolation function

Hi all.

I have extracted a data set from COMSOL software which consists of coordinates, x y z,in mm and velocity u v w, in m/s. The value is extracted at XY Plane, keeping Z-cordinates fixed at a point which so that the matrix [x y z u v w] dimension is 124*6. The excel file is attached here with. However, when i try to calculate Curl for the same, the below error is appeared. Warning: The underlying triangulation is empty - the points may be coplanar or collinear. > In Curl3D at 10 Error using curl (line 54) U,V must all be size 2x2 or greater. > In Curl3D at 8 I have written the following code. clc; clear all; Matrix = xlsread('3dvelfield.xlsx'); [x,y,z] = meshgrid(0:0.05:3,0:0.05:3,0.05); Fu = scatteredInterpolant(Matrix(:,1),Matrix(:,2),Matrix(:,3),Matrix(:,4)); Fv = scatteredInterpolant(Matrix(:,1),Matrix(:,2),Matrix(:,3),Matrix(:,5)); Fw = scatteredInterpolant(Matrix(:,1),Matrix(:,2),Matrix(:,3),Matrix(:,6)); u = Fu(x,y,z); v = Fv(x,y,z); w = Fw(x,y,z); curl(x,y,z,u,v,w)

P.S.: When, i deal with only 2D case for the same problem discussed above. The simulation runs successfully

Can anyone please help me with this problem. I will be very grateful. Thanks in advance