Plot Scaling

Plot scaling is very frequent operation in any graphic processor and DM2000 was designed to make it as comfortable as possible. There's a lot of special commands and features:

• Scaling options for plot axis may be defined in Axis properties dialog box (View|Properties|X,Y Axis)
  
  
• Use Rescale toolbar button and Rescale X,Y commands from plot pop-up menu to quickly set automatic plot scaling
  
  
• Zoom In tool (scale toolbar) - when selected, plot viewer is in Zoom In mode. Select desirable plot region to magnify scale range. Notice that if mouse button released out of data area, zoom operation is cancelled. This tool does not reset after operation so you may use it repeatedly.
  
  
• Zoom Out tool (scale toolbar) - the same as above, but shrinks selected area. Keep in mind that all plot tools are mutually exclusive: when you select tool, all others will be turned off.
  
  
• Zoom tool (View|Zoom) - combines two previous tools in one. Hold Shift key to start select plot region. When you release mouse button, it will be magnified (same as Zoom In). If you hold Alt key when releasing mouse, this tool performs Zoom Out operation.
  
  
• UnZoom (View|UnZoom, F12) - this command "undoes" plot scaling operations performed with mouse. That is, any time when you change plot scale with Zoom/Zoon In/Zoom Out tools, previous coordinates are remembered in the special list ("coordinate stack") and may be revoked by the UnZoom command. Note that this list can track unlimited number of coordinate changes. If it is empty, UnZoom command is disabled.
  
  
• X1,X2,Y1,Y2 commands used to shift plot coordinates left, right,  down and up. However, if Zoom In or Zoom Out tools selected, these commands change only one axis limit: minimum or maximum. Scale increment depends on the number of major ticks. In this mode number of major ticks may be changed to keep tick scale constant (if Change Ticks flag in the plot pop-up menu is checked).
  
  
• Mouse wheel acts as X1,X2,Y1,Y2 commands: click axis and rotate wheel forward or backward to invoke X1,Y1 or X2,Y2. Click data area to deactivate this feature.

Plot scaling operations are unavailable if active viewer is not plot (active viewer displayed in the status line of the main window). To make plot active, just click it with mouse.