Executing a Profile

See about Profile tracing in the SPRING

Executing the Profile tracing:

  • activate, in the "Control Panel", an Information Layer (IL) from a Numerical category, which will be used as an input to a profile definition. Make sure there is a rectangular grid representation (Grid) or a triangular grid representation (TIN) for the active IL;
  • select in the DTM list option, in the main menu, the Profile... option to open the associated window;

     At the Profile window:

  • select Grid or TIN, as an Input, option according to the available representations for the selected numerical IL;
  • select between Editor or Infolayer, as a Trajectory option to either perform a trajectory editing or use the IL lines as a trajectory, respectively. In the Editor, the trajectory will be defined from the lines editing option, while in the Infolayer option lines from the Information Layer will be used as a reference. See the operation sequence for each of these options.

      Trajectory Editing  

    • select Editor, as a Trajectory option. Notice that the central part of the window presents some specific options from this selection. In the Edit the points from a trajectory line are defined, like in the arc digitalization, in the step mode;
    • select Create, as a Lines option, if a new trajectory will be digitized. For this, define an initial and intermediary points from a line, in the active drawing area, pressing the cursor's mouse left button (LB). Define other trajectories (maximum 5);
    • select Delete, as a Lines, option and select a trajectory (press the cursor left button on a line in the active window), to remove a line;
    • select Create, Move or Delete, as a Points option, to change a trajectory;
      • to Create new points in a visible trajectory in the active window, press the mouse left button (LB) on a line position, where the point will be created;
      • to Move a point from a visible trajectory in the active window, select the point in the line and drag it to the desired position;
      • to Remove a point from a visible line in the active window, just select the point in the line (press the mouse left button on the point);

     

    Trajectory through an Infolayer  

    • for Trajectory, select the Infolayer option to use lines from an existing IL as trajectories. Notice that the window's central part Profile presents some specific options from this selection;
    • make sure that the numerical IL was activated in the "Control Panel", (the one which has the selected grid).
    • make sure that the lines from an IL (Thematic, Cadastral or Network) are visible in the active window;
    • press the Layer... button to open the Categories and Information Layers window. In this window, select the Category and the corresponding Infolayer, the one which has the trajectories, and press the Apply button to return to the Profile;
    • click on Select Trajectory;
    • use the active window Drawing Area cursor, to select trajectories.  Mark, using the cursor left button, over the lines and notice that they are highlighted with a different color. To unselect a trajectory, click, using the cursor's left button, on it;

          To visualize the profile graph, independently of the way the trajectory was selected:

  • give a name for the Graph Title:;
  • give a name for the graph's Y axis, and its unit (meters, Km etc);
  • press the Apply button to visualize the graph with the profile(s), as shown in the figure below;
  • press the Close button to exit this application;
  • press the Help button to get help while running this application.

mnt_perfil.gif - 9795 Bytes
Configure your Chart

 

See also:

How to generate a Rectangular Grid
How to generate a Triangular Grid  

Other DTM products in the SPRING