for (n = 0; n < data->size2; n++)
{
tmp = gsl_matrix_get (data, i, n);
for (n = 0; n < data->size2; n++)
{
tmp = gsl_matrix_get (data, i, n);
{
xj = gsl_vector_get (&x.vector, j);
yj = gsl_vector_get (&y.vector, j);
{
xj = gsl_vector_get (&x.vector, j);
yj = gsl_vector_get (&y.vector, j);