How to Select Data (ILs) from a Map
After defining the size, scale and data position, they can be visualized on the specified area. The selection of Information Layers (ILs) is done on the Control Panel , likewise the SPRING module. To visualize the data you need to:
- load a database and a project;
- create or load a map.
Selecting ILs to present on the data area:
- click on Show on the main menu and check the option Control Panel.
- Select one category on the Categories list and choose an IL on the Infolayers list. Each category presents its own Information Layers;
- define a Priority typing a value on the text box and click in CR. The priority allows the user to select data from more than one IL, for the same map, and visualize them in a certain order. Then, you will be able to generate overlapped data on the same map. However, to understand correctly information, you should try to avoid vectorial data being overlapped by polygons. The lower the value the greater the IL visualization priority (priority 1 will be the first, 2 the second, and so forth);
- click on the desired representations for each IL in the Control Panel. Depending on the category model selected the drawing area adjusts automatically (check the different representations below). The selected categories will have a sign (V) in front of its name while the IL will contain the letter corresponding the representation.
Repeat the operation above for each IL, considering its priority.
NOTE: double click on the IL or category to remove it from the list.
Depending on the data model of the selected category, we will have specific representations:
-
Thematic IL:
-
Points (P); Lines (L); Image (I) - vectorial format; Classes (C) -
polygons associated with classes; Text (T).
-
Numeric PI:
-
Samples (S) - contour lines and spot-heights; Grid (G) - rectangular grid; TIN
(Ti) - Triangular Irregular Network; Contour Lines
(Cl) - contour lines generated from the grid; Text (T); Raster (Im).
-
Image IL:
-
Define the channels to present the bands: Mono (M) - monochromatic; R(R)
- red; G (G) - green; B (B) - blue; Text (T); Synthetic Image (S) - three bands composed on the same image.
-
Network IL: :
-
Points (P); Lines (L); Objects (O); Texts (T);
-
Cadastral IL :
-
Points (P); Lines (L); Images (I) - raster format; Objects (O); Text (T);
NOTE: The Display Control, on the Control Panel,
is not used by SCARTA.
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