How to perform interpolation on a 2D array in MATLAB -

how can make function of 2 variables , given 2d array, return interpolated value?

i have n x m array a. need interpolate , somehow obtain function of surface pick values on not-integer arguments. (i need use interpolation function of 2 variables)

for example:

a[n,m] //my array // here method i'm looking for. returns function interpolateda interpolateda(3.14,344.1) //that function returns interpolated value 

for data on regular grid, use interp2. if data scattered, use griddata. can create anonymous function simplified wrapper around calls.

m = 10; n = 5; = rand(m,n); interpolateda = @(y,x) interp2(1:n,1:m,a,x,y); %interpolateda = @(y,x) griddata(1:n,1:m,a,x,y); % alternative interpolateda(3.3,8.2)  ans =       0.53955