Occurrence of objects

Dialogue performs overlay operation of multiple superimposition of objects of two classes by the method of intersection. Objects of input classes are defined by two lists: the list 1 - objects of superimposition and the list 2 - the analyzed objects. Lists of objects of input classes should be prepared in advance by means of the mode the "Lists of objects."

Result of mode's work are the calculated values of occurrence areas of objects of the list 2 (analyzed objects) onto objects of the list 1 (objects of imposing). The program defines multiple occurrences of objects of the list 2 into input objects of the list 1 and calculates the area of each occurrence in absolute units, and in percentage of object of imposing.

To start calculations it is necessary to choose lists of objects in the drop-down menu and to press button "Calculate". Different lists should be chosen. Calculation results of multiple superimpositions will be shown in the table. As the identification information displayed in table's fields “Object of list 1” and “Object of list 2”, there is used the semantics “Own name” (code 9).

For unloading the data into CSV file it is necessary to press button "Report". In dialogue there is a possibility to choose type of separator which will be used at data unloading.

Also after calculation it is possible to write down into objects of list 1 the information about which objects from the list 2 are included into the object, and also the area of occurrence and the percentage of entry. To do this, press the button “Onto map”.  The map should be created using the classifier agro10t.rsc. Into semantics “Entry into the field” (code 637) of object from the list 1 there is recorded the semantics contents “Own name” of object from the list 2. Into semantics “Percent of entry into the field” (code 638) there is recorded a part of the area of object of the list 2, entering into object of the list 1 in percentage. Into semantics “Area of entry into the field, ha” (code 639) there is recorded the area of object of the list 2, entering into object of the list 1, in hectares. Flag “Precise the area” carries out information function and can not be changed, it duplicates value of a tag “Precise the square and length” from "Options" item of the program's main menu.