setRowNameGLPK.
Here, i can be an integer vector, rnames can be a character
vector.setRowsNamesGLPK(lp, i, rnames = NULL)"glpkPtr " as returned by
initProbGLPK. This is basically a pointer to a GLPK problem
object.i or NULL.setRowsNames which calls the GLPK
function glp_set_row_name. If rnames is set to NULL, all row names for row indices in
i will be removed. If rname[k] is the empty string "",
row name i[k] will be removed.