how to linearly interpolate 2D matrix at a point (x,y)

X: x-coordinate values, Y: y-coordinate values. These correspond to Values as the 2D table. interpolate the value at (2.5,3.5) but my code doesn't work. receive error of wrong input arguments

interpolatedvalue = interp2(X,Y,Values,2.5,3.5);

[Akira Agata]

X, Y and Values should be full grid matrix or grid vector. Please check these variables in your code and the following documentation page.

https://jp.mathworks.com/help/matlab/ref/interp2.html?lang=en#btyq8s0-1-XY

Answer 1

[Jan]

Please post a copy of the complete error message and show us the inputs.

This works fine:

X = rand(4, 5);
interp2(1:5, 1:4, X, 2.5, 3.5)
% Not: 1:4, 1:5 !!!