The imod package can be used in many ways. By and large, imod enables functionality rather than implementing it. Geopandas, pandas, and xarray provide most of the functionality; imod provides the link to the MODFLOW specific file formats.
Sometimes, commonly used functionality (in groundwater modeling) is not available in existing packages, or is insufficiently fast or convenient. For these situations, imod provides a number of additional functions. These functions revolve around the same principal data structures (geopandas, pandas, xarray) and rarely introduce new data structures.
The examples below follow this rationale: a great deal of demonstrated funtionality is e.g. “vanilla” xarray functionaly, but used for the goal of convenient groundwater modeling.