Matlab resizing a matrix

I have a matrix 8314 x 3 and want to cut it down to 144 x 3 while having the same start and end point.

Answer 1

[Ameer Hamza]

Try this interp1() based solution.

M = rand(8314, 3);
M_new = interp1(linspace(0,1,size(M,1)), M, linspace(0,1,144));

Answer 2

[David Hill]

Not sure how you want to select the elements between the first and last.

newMatrix=reshape([yourMatrix(1:58:end),yourMatrix(end)],[144],[]);