Scale bar for 2D axes

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)
Unit: string containing units e.g. 'mm'