Processing of point objects with absolute elevation

It is carried out after processing of sheet's isolines. The objects are processed the types of which are contained in the Dots dialog page. Types of point objects in the Dots page are arranged in decreasing order of their priority: GGS points, command heights, marks of elevations. During processing, the Density (dots/sq.dm) parameter is used, which determines the degree of rarefaction of the command elevations and marks of elevations. In the process of rarefaction, a marking by a red color is performed (adding semantics 31002 RGB MARK DISPLAY COLOR) of the superfluous elevations marks of the sheet.

During processing, command elevations are converted to the marks of elevations. This transformation is provided by the elements of dialog Special dots and Ordinary dots. The dot objects set by the element of dialog Special dots (command elevations), will be transformed to the objects specified by the element of dialog Ordinary dots (elevation marks). During processing, four command elevations with the maximum absolute elevation, as well as four points with the minimum elevation, are searched for and stored in the quarters of the sheet. Moreover, if the command elevation coincides with the GGS point, then it is saved.

If you set the mode Downgrade of visibility limit, then instead of marking the elevations in red, the new upper visibility limit is set, which disables the display of superfluous dots in destination scale.

Into the coordinates of point objects other than those specified in the Special dots and Ordinary dots parameters, a random error is entered, specified by the Random error parameter. Besides, coordinates of the given dot objects are rounded according to the Rounding precision parameter. If both parameters Random error and Rounding precision are equal to zero, then the coordinates of point objects do not change.

The changed coordinates of a point object are entered into the corresponding points of the metric of all sheet objects that are topologically related to this point object. For example, when you change the coordinates of a point object ELEVATION MARK AT THE LANDMARK located in a place of roads intersection, the coordinates of  a place of intersection of two linear objects the FIELD AND FOREST ROADS also change.

At processing of  elevation marks, there is carried out a check of belonging the marks to the objects banning their removal. Objects that ban the removal of elevation marks can be: a mark of peak (of a mountain, a hill, a ridge), an administrative boundary, a linear or an areal river, where the elevation is a Water line. The types of objects banning the removal of elevation marks are contained in the dialog page the Dots deletion ban. Belonging of elevation mark to the banning object is determined with use of parameter the Limit of topology link.