Interpolate to fill missing values in a temperature Matrix by considering the altitude (stored in a separate matrix)

INTERP2 2-D interpolation (table lookup). Vq = INTERP2(X,Y,V,Xq,Yq) interpolates to find Vq, the values of the underlying 2-D function V at the query points in matrices Xq and Yq. Matrices X and Y specify the points at which the data V is given. Xq can be a row vector, in which case it specifies a matrix with constant columns. Similarly, Yq can be a column vector and it specifies a matrix with constant rows. Vq = INTERP2(V,Xq,Yq) assumes X=1:N and Y=1:M where [M,N]=SIZE(V). Vq = INTERP2(V,K) returns the interpolated values on a refined grid formed by repeatedly halving the intervals K times in each dimension. This results in 2^K-1 interpolated points between sample values. Vq = INTERP2(V) is the same as INTERP2(V,1). Vq = INTERP2(...,METHOD) specifies alternate methods. The default is linear interpolation. Available methods are: 'nearest' - nearest neighbor interpolation 'linear' - bilinear interpolation 'spline' - spline interpolation 'cubic' - bicubic convolution interpolation for uniformly-spaced data. This method does not extrapolate and falls back to 'spline' interpolation for irregularly-spaced data. 'makima' - modified Akima cubic interpolation Vq = INTERP2(...,METHOD,EXTRAPVAL) specificies a method and a scalar value for Vq outside of the domain created by X and Y. Thus, Vq will equal EXTRAPVAL for any value of Yq or Xq which is not spanned by Y or X respectively. A method must be specified for EXTRAPVAL to be used, the default method is 'linear'. All the interpolation methods require that X and Y be monotonic and plaid (as if they were created using MESHGRID). If you provide two monotonic vectors, interp2 changes them to a plaid internally. X and Y can be non-uniformly spaced. For example, to generate a coarse approximation of PEAKS and interpolate over a finer mesh: [X,Y,V] = peaks(10); [Xq,Yq] = meshgrid(-3:.1:3,-3:.1:3); Vq = interp2(X,Y,V,Xq,Yq); mesh(Xq,Yq,Vq) Class support for inputs X, Y, V, Xq, Yq: float: double, single See also INTERP1, INTERP3, INTERPN, MESHGRID, griddedInterpolant, scatteredInterpolant. Documentation for interp2 doc interp2 Other uses of interp2 codistributed/interp2 gpuArray/interp2