MATLAB: 1-D interpolation along specified dimension

interpolation

Hello, I have a tall 2-D matrix 6037500×44. I want perform an interpolation of all the 6037500 rows, using the 44 sample points and 301 query points. It is basically a 1-D interpolation along the second dimension. A for-loop row-by-row lasts forever. Can anybody suggest a more efficient way? Thanks!

Best Answer

  • Not sure who's the independent x value but seems like the vectorized form should work
    xout=interp1(x,data.',xq);
    where x is the independent variable range commensurate with the range of the data over the 44 columns consistent with xq, the 301-length interpolating points.