Types of Grids
The first issue of any visualization is the type of grid in use. Most grids fall into one of two basic categories.
Structured grids get their name from their nature of having a structure implicitly defined by the arrangement of the data. Structured grids have a basic rectangular matrix structure that makes storage and use easy as integer offsets (typically named I, J, and K) can be used to access individual data points. Data points are arranged into rectangular or cubic structures by simply connecting them to their neighboring I, J, and K cells.
Within structured grids there are several subtypes: