The i-j-k Index System for Gridlines

- For finite-difference models (MODFLOW-2000, MODFLOW-2000 GWT, MODFLOW-96, MOC3D, and MT3DMS)
- The index i runs along a row.
- The index j runs along a column.
- The index k increases from one layer to the next,
counting from bottom to top. Note that this is opposite to the MODFLOW
convention in which layers are counted from top to bottom.
- For the finite-element model SUTRA
- The index i runs along the "first numbering direction"
- The index j runs along the "second numbering direction"
- The index k runs along the "third numbering direction"
- Model Viewer can display 3 gridline sets
defined respectively by the indices i, j, and, k. These gridline sets
are illustrated below.
