deletes rows of a matrix containing missing values
mat=packr(mat)
mat = a (nxp) matrix
mat = a (mxp) matrix
v=[ones(7,1) [1:7]'] ;v(3,2)=%nan;w= packr(v) // returns: // w = //! 1. 1. ! //! 1. 2. ! //! 1. 4. ! //! 1. 5. ! //! 1. 6. ! //! 1. 7. !