hello
see example below, the x,y,z are dummy data - use your own data instead
% create somme dummy data
z = peaks(20);
% convert to scatter points
z = z(:);
x = rand(size(z));
y = rand(size(z));
% main code
F = scatteredInterpolant(x, y, z);
xv = linspace(min(x), max(x), 100);
yv = linspace(min(y), max(y), 100);
[X,Y] = meshgrid(xv, yv);
Z = F(X, Y);
% plot
figure
contour(X, Y, Z)
grid
xlabel('X')
ylabel('Y')
zlabel('Z')
colorbar('vert')
colormap('jet')
