Building raster of slopes

The given mode is used for building a raster of qualities reflecting orientation of slopes of a land relief. Building a raster of slopes can be executed at presence of the open data about a relief - matrixes of heights, matrixes of layers, TIN-models. The element size of a created raster is equal to the maximal size of an element of the open matrixes, and at absence of matrixes - is defined from scale of TIN-model. Result of building is the file of a raster of qualities (*.rsw).

The element of a created raster can correspond to southern, northern, western or east slope. The element of a raster can correspond to absence of a slope also. At definition of a belonging of an element to this or that slope two directions are considered - from the south onto the north and from the west onto the east, of which the direction with a greater steepness of a slope is selected. In Slope not less (degrees) dialog window the threshold value of a slope is set - the positive value of a corner in degrees. Slopes with a steepness, smaller threshold value, it is possible to consider either as southern, or as absence of a slope (a flat surface). The mode of entering of such slopes into a raster is set in an element of dialog: Slopes with less angle are.

Southern slopes are represented by red shades of a raster palette, northern slopes - by blue shades of a raster palette, the western slopes - by green shades, east - by yellow shades. Intensity of palette colors of a created raster are set in an element of dialog: Palette type. Colors can have the constant intensity, smoothly variable intensity and gradation of intensity.

The raster of slopes can be built onto region or onto specified in region the site of district provided by data about a relief. For building a raster of slopes onto region it is necessary to include All region mode in Output area group. For building a raster onto specified rectangular site of district it is necessary to press the Select button in Output area group and to choose a site of district on a map by two pressing of the left mouse button. For change of borders of output area - to press the Change button and to execute change by mouse. The ending of a change mode is the double click of the left mouse button. For building a matrix onto the site of the district limited by the closed contour, it is necessary to press By contour button in Output area group and to set a contour by pressing of the left mouse button. The ending of a mode of the contour's specifying is the double click of the left mouse button.