Scale bar for 2D axes

Creates a scale bar in a 2D axes. The length, location and colour of the scale bar are customisable.

Description

SCALEBAR creates a scalebar on an axes
 
  SCALEBAR
  SCALEBAR OFF
  SCALEBAR(PARAMETER, VALUE, ...)
  SCALEBAR(HAXES, PARAMETER, VALUE, ...)
  H = SCALEBAR(...)
  
  Draws a scalebar on the axes and returns handle to the scalebar. The DataAspectRatio property of the axes must be set to [1 1 1] and the view must be in 2D. All parameters are optional (note the default values below). SCALEBAR OFF deletes the current scalebar.
  
  PARAMETER/VALUE pairs
      hAxes: handle to the axes (defaults to current axes)
      ScaleLength: length to show (in data units) (defaults to ~10% of the x-axis limit range)
      ScaleLengthRatio: ScaleLength/range(XLim)
      Location: location of the scalebar. Possible values are
                    northeast (default)
                    northwest
                    southeast
                    southwest
                    [x y] data coordinates
      Colour: colour of scalebar in 1x3 RGB array (default is [0 0 0])
      Bold: draw with bold text and linewidth=2. True or false(default)

• MATLAB release: MATLAB 7.7 (R2008b)