Construction of isolines by surface  

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ic_0266 This mode allows to construct isolines by models of surfaces (a matrix of heights MTW, a matrix of qualities MTQ, a matrix of layers MTL, points cloud MTD-model). Formation of isolines is carried out in borders of one surface.

To build an isoline the user should choose a filename of a surface, set a name of an output user map, specify names and codes of formed objects and set the parameters of   building isolines. If you set flag the Prompting of analytical structure, the modification of the input surface is carried out for the purpose of obtaining smoother forms. Degree of matrix modification is set by means of the corresponding element located in one line with a flag of operation. Performance of this process change the values in the original surface.

The flag of Smoothing of isolines metrics is used to give the smooth forms to the constructed broken isolines, by the addition of points of the metrics by a method of interpolation of their planimetric position.

The diapason of isolines values contains the minimum and maximum value of possible marks for specified step of construction, and also the minimum and maximum value of marks of created objects-isolines. The range of marks of created isolines should be within a range of possible marks and can be set by the user.

The range of possible marks of isolines depends on the specified step of building and allows the user to be guided in a choice of the building step of isolines.

Into the dialogue window: Minimal isoline length the value is entered which determines the minimum length of an isoline in millimeters on the map. All isolines which length is less than the specified one will not be placed into the output map.

As a result of program work the user map is created on which the formed isolines are located.

The task of building isolines by a surface is a special case of task the Construction of horizontals. In this task the number of parameters for building is less, and the control and coordination of the input matrix are not made.