swap_handles

//-----------------//
//  First example  //
//-----------------//

// create a rectangle
xrect( 0.5, 0.5,0.5,0.5) ;
rect = gce() ;

// create a circle
xarc( 0.5, 0.5, 0.5, 0.5, 0, 64 * 360 ) ;
circle = gce() ;

// create an arrow
xpoly([0,1],[0,1]) ;
arrow = gce() ;
arrow.polyline_style = 4 ;
arrow.arrow_size_factor = 4 ;

// get the list of children
axes = gca()  ;
axes.children

// change the order
swap_handles( rect, arrow ) ;
swap_handles( arrow, circle ) ;

// get the new order
axes.children

//-----------------//
//  Second example //
//-----------------//

// create two windows
plot2d ;
axes1 = gca() ;

scf() ;
fec ;
axes2 = gca() ;

// swap their axes
// note that the color map does not change.
swap_handles( axes1, axes2 ) ;