Deleting every n rows in matrix

I have a matrix of m x n

I want to keep the first row and then delete 14 rows and then preserve the 16th row, then delete the next 14 rows and preserve the 31th row.

What is the best way to do this?

Answer 1

[David Hill]

newMatrix=oldMatrix(1:15:end,:);

[Niet hier]

thanks

Answer 2

[Fangjun Jiang]

A=1:100
A=A(1:15:end)