Controlling Objects Visualization

The Visualizing Objects interface is composed of a toolbar and a list of objects (see figure below) where all categories that belong to the Information Layer are shown. The control is done using the two check boxes on the left of each category name (check the rectangle to see the category on the map and the triangle to see the legend).

cons0006.gif - 6579,0 K

Selecting objects:

  1. Choose on the "Control Panel" the Objects category to perform the query;
  2. Click on the representation Objects. The Query button will be enabled;
  3. Click on Query... and the dialog box "Generating and Selecting Collections" will be presented;
  4. Select a collection at the Collections list or ALL to use all objects;
  5. Click on Apply. Two windows are presented: "Visualizing Objects" and "Table";

NOTE:  The map presentation is always done on the current screen where the query was performed. However, it is possible to enable and show other displays, performing new queries, and then comparing the results in more than one window. Check below the figure with a cadastral map that contains blocks, roads, labels etc.

cons0007.gif - 23932,0 K


Showing Legends and presentation order

Each objects category might have a different look and the Visualizing Objects interface has buttons that allow or not the visualization of legend in each category. It is also possible to define the order of objects exhibition when drawing the map. Notice that depending on the order chosen, some objects might be covered by others.


Showing the legends:

  1. Click on the triangular button on the Visualizing Objects dialog showing its respective legend. To hide it, press the button again. The figure below shows the interface with legends for Schools, Hospitals and Malls.

cons0008.gif - 8035,0 K


The presentation order is done from bottom to top. Remember that the last categories to be drawn might cover the ones that have already been drawn. To change this, you can use the mouse by dragging and moving the categories as you wish.

Observe the presentation order on the figure above:

  1. first: Malls
  2. second: Hospitals
  3. third : Schools.

Selecting the objects category

When the IL selected for query presents more than one objects category, you must choose one of them for applying the operations available at this interface. The selected category is always highlighted on the list. Notice on the figure above that the object category "Malls" was selected.


Selecting a object category:

On the dialog box "Objects Visualization", double click on one of the categories of the list and the rectangle highlighting it is presented.

This dialog box also presents a toolbar which has the following options for analyzing the object category chosen by pressing one of the following buttons:

NOTE: In addition, an item named Undo Query is available. When one selects this option, all the applied queries (spatial and by attributes) are removed.


See Also:
Pointing and Photo Module
Using SPRING

Database Query