
Re: How to insert a vector between two arbitrary points of a matrix?
Posted:
Dec 13, 2012 12:56 PM


W dniu 20121213 18:28, Wojtek pisze: > Thanks for your answer. Well, I would like the vector to fit between two > points. It's length may be (and almost always it will be) changed to fit > there. But how to change the size of a vector from N to M (M may be both > bigger and smaller then N) without cropping it? Some interpolation is > necessary. Do you have any ideas how this can be done?
new_Y = interp1(data_X, data_Y, new_X); for linear interpolation, or
new_Y = interp1(data_X, data_Y, new_X, 'spline'); new_Y = interp1(data_X, data_Y, new_X, 'pchip');
If you want to calculate many (new_Y/X) for constant data, use piecewise polynomial.
PP = interp1(data_X, data_Y, 'linear'/'spline'/etc, 'pp'); and ppval function.
bartekltg

