Tutorial Exercise 4.2: Working with Survey Views

A special view with some additional features is the survey view which can be opened from any view (except for another survey view) by using menu View/Open Survey View. So make sure that you have one uDraw(Graph) base window showing a large graph (e.g. "graph_example.udg"). We will call this window detail view. Reduce the window size so you can only see a small part of the whole graph. Now, select menu "View/Open Survey View" in the detail view to get a new base window called survey view. As with all views, detail and survey view are coupled with each other to show the same graph layout.

A survey view displays the currently visible graph area of the corresponding detail view with a blue rectangle which is continuously updated. Use navigation or move the scrollbars in the detail view to see how the blue rectangle will follow these movements in the survey view to visualize what is visible in the detail view. You can even move the blue rectangle directly with the mouse. When you do not see a blue rectangle in the survey view, then either the graph is not completely visible in the survey view (correct this by using menu View/Fit Scale to Window in the survey view) or it is completely visible in the detail view (use a larger graph in this case or shrink the size of the detail view).

Another nice feature of the survey view is that after selecting a node in the survey view, the system will automatically scroll to this particular node in the corresponding detail view with animation. Try this by clicking on some nodes in the survey view.

End of Exercise 4.2. Go back to the Section 4 Overview.