Description of codes file

File of codes is applied at converting of map into DXF format.

File of codes is a text file, has an any name and standard name extension .DXK. Serves for compulsory change of object type and a layer name in a DXF-file where the object should be placed. If the file of codes is not set, type and a layer of map object are taken from the classifier, differently from a file of codes.

Structure of a file of codes:

OBJECT_KEY  TYPE  LAYER

..

OBJECT_KEY  TYPE  LAYER

 where:

OBJECT_KEY - a key of map object (from the classifier of map resources)

TYPE - new  type (character of localization) of object. It is set by the following text constants:

             LIN - linear

             SQR - area (polygon)

             DOT - dot (point)

LAYER - a new name of object layer (up to 15 symbols, symbols and numerals are allowable only)

Principle of work is the following. For current object of a map OBJECT_KEY is searched in a file of codes, coincident with a key of the given object. The found object is placed into a layer LAYER. If the key of object is not found in a file of codes, DXF layer name is established by a layer name of object from the map classifier.

If the object in the file of codes is not found, type and a layer name are taken from the classifier. File of codes beforehand prepares by the user in the text editor. Presence // in first two positions of a line is considered as the comment and leads to exception of a line from processing.

Example of a correct file of codes looks like:

L0031431100 LIN  channels_3-10m

S0041200000 SQR urban-type_community