Units

Units are determined by the data that you read into WMS. For example if you read a TIN in which has coordinate vertices in meters then you are responsible to tell WMS that you are working with metric units so that proper conversions are made when computing areas, slopes, and other geometric values.

Units are specified in the Units dialog. Model units are the units of the geometric data (i.e. TIN, DEM, Feature Objects, etc.) you are using to develop hydrologic and hydraulic models whereas parameter units are the units you wish to have areas and distanced converted to when performing calculations. IMPORTANT: WMS requires that the Horizontal and Vertical units be the same in order to correctly estimate slopes.

Units are closely related to the Current Coordinate System and so access to this dialog is given in order to change the current units setting.