Support points generalization |
|
|
In the mode of automatic generalization of strong points into the coordinates of the points of the planned base, a random error is entered in accordance with the specified value of scatter and subsequent rounding with the established accuracy (in millimeters on the map). The analysis of quality of the output map is carried out on the basis of the error log (messages) received upon termination of forming a nomenclature sheet of a map of destination scale, in the dialog the Map Editor / View error. At the end of automatic generalization, a selection (deletion) of objects is performed if there are more than 10 of them per 1 dm2 of area. The selection of objects is carried out in interactive mode the Map Editor / Delete object.
The dialog contains a list of the keys of the objects being processed and the editing fields: - Rounding precision; - Maximum value of random error.
In the beginning of execution of the task the copy of the source map is automatically saved into a SXF-file with addition to the name of sequence number of a current stage.
|
In order to ensure the preservation of state secrets when creating maps of scale 1: 100,000 by maps of a larger scale, the coordinates of the points of the planned base are rounded off (points of the state geodetic network, geodetic network of condensation, astronomical points, marks and benchmarks of the leveling network). The table of keys of the processed objects is contained in the file with the extension IGS.