Using rows of matrix as elements in a new matrix.

I have a 2x12 matrix of X and Y cordinates, how do I make a new 2xn matrix of pairs of these points?

Answer 1

[Star Strider]

Try this:

M = [1:12; rand(1,12)];                                             % Original Matrix
n = 50;
xnew = linspace(min(M(1,:)), max(M(1,:)), n);                       % Create 50-Point Interpolation Vector
ynew = interp1(M(1,:), M(2,:), xnew, 'pchip');                      % Choose The 'pchip' Method To Illustrate The Interpolation, Use Whatever You Want

figure
plot(M(1,:), M(2,:), 'xr')
hold on
plot(xnew, ynew, '--b')
hold off
grid

Choose ‘n’ to be anything you want, and use whatever interpolation method you want. See the documentation on interp1 for the available options.