Keys

The easiest way to explore a graph is by using the arrow keys. The display window is moved 256 pixels in the corresponding direction. Scrolling corresponds to the menu items listed below. They are located in the Scroll submenu of the main menu.

Scrolling direction Key Menu item Upwards UUp To the left LLeft To the right RRight Downwards DDown Go to origin (0,0) 'o' Origin

The 'o' key positions the upper left corner of the display window in the upper left corner of the graph.

Mouse pointer

The mouse pointer can be used to scroll the display window through the virtual window. When the left mouse button is pressed and held, followed by dragging over the graph window, the graph moves in the direction the mouse pointer was dragged.

Scrollbars (fine-tuning)

The vertical and horizontal scrollbars for the virtual window (outermost scrollbars on the left and bottom of the graph window) are used to respectively position the virtual window at an x or y coordinate, i.e. they move the window through the coordinate system.

The vertical and horizontal scrollbars for the display window (innermost scrollbars on the left and bottom of the graph window) are used to scroll the display window through the virtual window. These scrollbars enable the position of the visible part of the graph to be fine-tuned. It should be noted that repositioning the virtual window causes part of the graph to be redrawn. Scrolling the display over the virtual window only causes the display window to be refreshed, which is usually much faster.

» Next: Panner window
» Prev.: Navigating through a graph

Last modified on 5 July 2003 by webmaster. © 2000-2003 AbsInt.
URL: http://www.aisee.com/manual/unix/9.htm

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