I am trying to smooth out this graph for an assignment and the code i have entered is exactly what the teacher has showed us, but mine comes up with errors that I don't understand. Can someone help me understand these errors as well as fix my code?

x = 0:1:10;

y = 0:1:10;

z = [0 0 0 4 4 4 4 3 3 3; 0 4 14 28 33 36 48 35 15 3; 0 9 30 47 51 47 43 45 30 3; 4 23 37 59 62 57 56 45 40 19; 4 30 48 61 63 58 61 58 44 19; 4 24 43 59 63 60 58 55 46 19; 4 21 35 50 58 58 55 43 38 19; 0 13 22 29 39 46 43 36 32 4; 0 10 11 17 23 28 28 29 28 4; 0 0 0 9 9 9 9 4 4 4];

xi = 0:.5:10;

yi = 0:.5:10;

[xi,yi] = meshgrid(xi,yi);

zc = interp2(x,y,z,xi,yi,'cubic');

surf(xi,yi,zc);

xlabel('Catcher Viewpoint');

ylabel('RHB Viewpoint');

zlabel('Swing Percentage');

title('Mookie Betts Swing% in 2018');

text(3,5,75, 'Middle of the Strikezone');

These are the errors:

Error using griddedInterpolant

The grid vectors do not define a grid of points that match the given values.

Error in interp2>makegriddedinterp (line 228)

F = griddedInterpolant(varargin{:});

Error in interp2 (line 128)

F = makegriddedinterp({X, Y}, V, method,extrap);

Error in matlabproj (line 7)

zc = interp2(x,y,z,xi,yi,'cubic');

[David Wilson]

Check your array sizes.

size(z)
size(x)

Look carefully at the results, they should be the same. Are they?

Google "fencepost error"

[Jared Turgeon]

z is 10 and x is 11, how is this so?

I looked up fencepost error and understand that, but how would I go aabout fixing that in this scenario?

[darova]

• z is 10 and x is 11

Can you create more data points?

Answer 1

[Marcel Kreuzberg]

try with

x = 1:1:10;

y = 1:1:10;