fix a grid formatting bug

src/grid_fmt.rs

@@ -337,14 +337,15 @@ fn fmt_array<T: GridFmt + ArrayValue>(shape: &[usize], data: &[T], metagrid: &mu
  }
  let shape = &shape[1..];
  let cell_size = data.len() / cell_count;
+ let row_size: usize = shape.iter().take(shape.len().saturating_sub(1)).product();
  for (i, cell) in data.chunks(cell_size).enumerate() {
  if i > 0 && rank > 2 {
  for _ in 0..rank - 2 {
  metagrid.push(vec![vec![vec![' ']]; metagrid.last().unwrap().len()]);
  }
  }
  fmt_array(shape, cell, metagrid);
- if i * cell_size > 1000 {
+ if i * row_size > 1000 {
  let mut elipses_row = Vec::new();
  for prev_grid in metagrid.last().unwrap() {
  let prev_row = &prev_grid[0];