Steps - How to start ? - Step 7

VISUALIZING CADASTRAL DATA

Up to this moment we have visualized image data, thematic data, and digital data in the form of maps and images in the canvas. These data characterize what we call geographic fields.

Next we will visualize cadastral data. Some geographical entities, in order to be characterized, they need to be: individualized, qualified by a set of features, and represented as maps, which characterize its form and localization, for instance a street, a plaza, etc. These entities characterize what we called geographical objects.

Because they have attributes, it is not enough to show them as maps in the canvas, it is necessary to also visualize a table showing these attributes. Using the SPRING System tools it is possible to point an object in the table and visualize the object representation or to point the object representation and see its classification in the table.

Visualizing Geographical Objects:

  • click in View in the main menu and enable the Control Panel, or the button in the toolbar, in the case the Control Panel is not visible.
  •   select the Cadastro_Urbano category and the IL Mapa_quadras. Select the Lines and Objects buttons.

  • Click the Query... button in the panel.
  • the " Generating and Selecting Collections" window will be presented. This window allow to select an object subset in a cadastral map in order to be analyzed. This option is useful when the object table is very large, and consulting is too slow. In this case it is not required because the attributes table has a little over a hundred objects. Thus click in Apply in this window;
  • after a couple of seconds a table and a Visualizing Objects Display will show up.
  • select Blocks in the Display. Click on the drawing button in the toolbar. The filling blocks get a color. The blocks not filled were not identified.
  • Iconize the Visualization Objects Display.
  • Point an object in the table, clicking over any line in the first column.
  • Notice in the blocks map, active in the Main Display, the block corresponding to that line in the table is being filled with another color.
  • clicking inside one of the squares that build up the blocks drawing, all its attributes are highlighted in the table.
  • to deactivate the selected lines, click using the mouse right button over any line in the first column and select the option Remove - Marks - All
  • close the Visualization Objects Display.

VISUALIZING OTHER CATEGORIES    STOPING THE SPRING SYSTEM


 
Topics