2.3 2D-graph-window


  2D-graph-windows can be opened by the user at any number. With the graphs
you can look at functions (also more than one in a graph) in a coordinate-
system.

  Which function gets displayed or not in a graph-window can be selected in
the  functioneditor. The graph-windows and the function-editor run parallel
so that you can switch between them and work simultaneously in both of
them. Graph-windows are resizeable.

  Clicking the gadget "Redraw" will cause the graph to become actualized
and makes every changes visible that may have been made to the functions
since the last redraw.

  The coordinate-system of the graphe can be adjusted in the
2D-graph-editor via menu or gadget "Edit".

  The present intervall and the name of the graph get displayed in the
graph-windows title.

  A long as you press the left mousebutton the coordinates according to the
mouseposition get displayed in the text-line above the coordinate-system.

  As long as a 2D-graph-window is active, you can select one of the
following menus:


Project

  New Graph...        - Creates a new graph-window. The graph type 
                        ( 2D-graph or  SIRDS-graph) has to be specified
                        in a little requester.
  Help...             - Opens the context-sensitive online-help like
                        pressing the HELP-key
  About...            - Opens an info-window
  Quit                - Quit Graph2D


Graph

  Redraw              - The graph gets recalculated showing all changes
                        that have been made to the functions since the
                        last time
  Edit...             - The  2D-graph-editor opens,
                        where you can configure the graph
  Zoom in             - After marking an area with the mouse a new graph
                        opens displaying just the selected area
  Zoom out            - A new graph opens containing a four-times larger
                        visible intervall
  Print               - Prints the graph via the Workbench-drivers and
                        setings. You can edit a scaling factor here.
  Save IFF...         - Sorry, not implemented!!!