Control of metric information

Control of metric information includes:

- Control of objects onto degeneracy.Checking onto a zero of objects length (for linear and vector) and the areas of objects (for polygon objects) is carried out. Admissible values of the minimal length of linear object and the minimal area of polygon object are specified in dialog Check parameters.

- Control of dimensions of objects.Check of dimensions of objects in relation to dimensions of a corresponding map sheet is carried out.

- Control of closing of polygon objects and their subobjects. Checking onto equality of coordinates of first and last point of polygon object or a subobject is carried out.

- Control of closing of linear objects is carried out for linear objects. Linear objects are checked, the distance between which final points does not exceed the value, installed in the control parameters. Checking onto equality of coordinates of first and last point of object is carried out.

- Control of the digitizing direction of polygon's objects and their subobjects. It is performed by means of comparison of the digitizing direction of map object and direction of digitizing specified in the classifier for the given type of objects. The digitizing direction of subobjects should be opposite to digitizing direction of object.

- Control of outputs onto a framework. We do checking and editing of the metrics of linear and polygon objects,distant from a border of a sheet onto specified in parameters of the control a stretch threshold accordingly for linear and polygon objects. Points, lying out of framework in a mode of editing are discarded, and not reaching up to a framework in stretch limits, are stretched onto a framework. It is fair for all points of area object and extreme points of linear object.

- Control of double points .Checking presence and deleting of the successively located points with identical values of coordinates.