Vtk data modes

Stores each field value (x0, x1, x2, x3) as VTK CellData, with one value per MICRESS cell. This preserves the field’s cell-based representation.

Converts the field to VTK PointData by averaging adjacent cell values at each grid point, e.g. p11 = average(x0, x1, x2, x3). Additional boundary points are generated so that the original spatial extent and dataset bounds are preserved.

Stores the field values (x0, x1, x2, x3) directly as VTK PointData, without averaging or generating additional boundary points. Consequently, the dataset contains one fewer cell along each non-degenerate axis, reducing its spatial extent by one grid spacing in those directions.