Oneline Zooming and Panning

See Also

 

All oneline diagrams permit zooming and panning. Zooming and panning are very important tools for building and investigating large oneline diagrams that occupy more than a single screen of viewing area. Moreover, the display of various objects can be set to depend on the zoom level. See Oneline Conditional Display of Objects for more information on this feature.

 

The following mechanisms are provided for zooming or panning a oneline:

Line Navigation Arrows

For transmission lines whose end-points are not visible at the present pan/zoom level, small Line Navigation Arrows will appear where the line exits the present window. If you click on these arrows, the oneline will automatically pan over to the other end of the transmission line. The oneline will zoom out as it moves away from the present position and zoom back in until it finishes at the same zoom level with the endpoint in the middle of the oneline. On the Oneline Tab of the Simulator Options dialog you can control three attributes for these arrows

1. The size in pixels (default is 9)
2. How fast the program pan/zooms to the new location in seconds. (Making this shorter gets you there faster, but you lose some of the overview information of where you're going as you pan to the new location.)
3. Whether to show hints as you move the mouse over the arrows.

Zooming on Onelines

Zooming involves adjusting the oneline diagram's display area by changing the magnification of the view. Zoom in on a oneline to have the screen display less of the complete oneline diagram, and zoom out on a oneline to have the screen display more of the complete oneline diagram.

To zoom on a oneline diagram using the keyboard, follow these instructions:

• Use CTRL-up arrow to zoom in
• Use CTRL-page up to zoom in quickly
• Use CTRL-down arrow to zoom out
• Use CTRL-page down to zoom out quickly
• The Zoom ribbon group offers additional zooming options:
• Use the Zoom in on Area button of the Zoom ribbon group to select a region on which to zoom.
• Use the Show Full button of the Zoom ribbon group to zoom the display out to show the entire oneline.
• Use the Find button of the Zoom ribbon group to display the Pan/Zoom Dialog.
• Use the Save View button of the Active ribbon group to display the Save View Dialog, or click on the drop down arrow on the Save View button to choose from a list of saved views.
• Use the Rectangular Zoom Selector to select a section of the diagram to zoom into using a selection box. After clicking button (symbolized with a magnifying glass over a dashed rectangle,) left click and hold the mouse button down on the diagram, drag the mouse to select part of the diagram inside a box, then release the mouse button. Simulator will zoom into the region selected inside the box.

Panning on onelines

Panning moves the screen's focus point around the oneline diagram. You can pan left, right, up, or down to view different portions of the complete oneline diagram.

To pan around the oneline using the keyboard, follow these instructions:

• Use the arrow keys to move in the desired direction
• Use page up to move up quickly
• Use page down to move down quickly
• Use the Home key to move left quickly
• Use the End key to move right quickly
• Left-click and hold the mouse button down anywhere on the background of the diagram. Make sure you do not click on an object on the diagram. While holding the left mouse button down, drag the mouse in any direction to "drag" the diagram in that direction.

You can also use the Pan/Zoom Dialog to pan to a specific location, or even to a specific bus. You can display the Pan/Zoom Dialog either by pressing the Find button on the Zoom ribbon group of the Onelines ribbon tab or by selectingPan/Zoom Control from the oneline diagram's local menu.