Generating an Information Layer from a Table

Once a query process is executed, by attributes, spatial or grouping, about an objects map, it is possible to create a thematic or cadastral IL which represents the selected and/or grouped objects.

To create a cadastral IL just define the Category, and all selected objects will have their lines, polygons, and identifiers reproduced in the output information layer.

To create a thematic IL two distinct situations have to be considered by the user:

  1. executing just an attributes and/or spatial query - in this case only the selected polygons, lines and points will be copied to the thematic IL, and they will be associated to the category first class;
  2. executing a grouping, independently of an attributes and/or spatial query - in this case a category and associated classes can be automatically created using as a class name the own group (or slice), or even using an existing thematic category, in this last case it is required to define the most adequate association.

Next the procedures for each case described above will be presented.

Generating a cadastral IL after query executions:

  • activate in the "Control Panel" a cadastral category and an associated IL;
  • click on Query... and, in the "Generating and Selecting Collections" window, select a collection or all objects (ALL option), and click on Apply;
  • select the desired objects using the " Attributes Query" and/or "Spatial Query" windows;
  • in the Table module, click on the Infolayer Generation button to open the "Infolayer Generation" window;
  • click on Category... to select the category for the Information Layer that will be created. The " Categories List" window is presented. Select a cadastral category and click on Apply in this window;
  • type in the Output Layer a name for the IL;
  • click on Apply.

NOTE: Verify, in the "Control Panel" that the just created IL will be available for visualization.

Generating a thematic IL after performing queries:

  • activate in the "Control Panel" a cadastral category and an associated IL;
  • click on Query... and in the "Generating and Selecting a Collection" window select a collection, or all objects (ALL option), and click on Apply;
  • select the desired objects using the " Attributes query" and/or "Spatial query" windows;
  • in the Table module, click on the Infolayer Generation button to open the "Information Layer Generation" window;
  • click on Category... to select the category for the Information Layer that will be created. The " Category List" window is presented. Select a thematic categories and click on Apply in this window;
  • type in the Output IL a name for the IL;
  • click on Apply.

NOTE: Verify, in the "Control Panel" that the just created IL will be available for visualization.

Generating a thematic IL after grouping executions:

  • activate in the "Control Panel" a cadastral category and an associated IL;
  • click on Query... and in the "Generating and Selecting Collections" window select a collection, or all objects (ALL option), and click on Apply;
  • group the objects using the "Grouping Objects:<object_name>" window;
  • in the Table module, click on the Infolayer Generation button to open the "Infolayer Generation" window;
  • if you want to create a new thematic category:
    • click on Automatic Classes, type a name for the category and click on Create, otherwise:
  • click on Category... to select the category for the Information Layer that will be created. The " Category List" window is presented. Select a thematic categories and click on Apply in this window;
  • select a class in the Classes list and then the groups, in the Association list,  which will be associated to the selected class. By default, the association is done sequentially from classes to groups. The groups left with no association are attached to a “None” class;
  • type in the Output Layer a name for the IL;
  • click on Apply.

NOTE: Verify, in the "Control Panel" that the just created IL will be available for visualization. The created classes will have the same name as the groups and the same color (visual), defined in the "Grouping Objects:<object_name>" window.

NOTE 1: The Class visual can be changed through the Visual...button.

See also:
Database Query.
How to control the Objects Visualization.
Attributes Query.
How to execute an Spatial Query about objects.
How to manipulate the Objects Table.
Pointing and Photo Module .

Query Models.