This module allows the user to model flow intensity over a surface. The user may select either a constant value or provide a secondary map of values to 'drain' over the main surface. Excellent for helping to define watersheds and channelling conditions. The output map layer can be either areas or frames. This operation is used to detect edges, smooth data, generate an illuminated 3-D terrain, or create a shaded relief model.
Filter applies a moving window neighbourhood transformation to the input map.
The LowPass, HighPass1, HighPass2, Laplacian, and Sobel filters use a moving 3x3 window, or mask, with a set of default weights. Except for the Sobel filter, the user can override the default mask by creating a square mask map layer. Mirrors or transposes a map either horizontally, vertically, or both. The size and origin of the resulting map layer is specified using Rows and Columns modifiers. This module measures slope.