overviewplot(...) takes the same input arguments as the PLOT command 
and will create a new figure containing the plot and an inset 
displaying an overview of the plot. Pan and zoom operations on the main 
axes will result in a rectangle being drawn in the inset axes 
representing the section of the data currently shown in the main axes. 
Manipulating the rectangle has the same effect as panning the main 
axes. 
overviewplot(FIG,...) will put the main axes and inset axes into the 
figure represented by the handle FIG. Any callbacks active in the 
figure will be overwritten as will any data present in the figure. 
 
Copyright 2007 The MathWorks, Inc. 
 
Edited to add the color for inset overview box 
 
Edited by: Kranti Konganti 
Texas A&M University. 
 
$LastChangedDate: 2012-07-24 18:17:14 -0500 (Tue, 24 Jul 2012) $ 
$LastChangedRevision: 206 $ 
$LastChangedBy: jcai $ 
 
Check for a figure handle as first input: