how to convert the solid line into dashed line in the images during overlay of images

when i overlay the images i get solid line marking on the image. i want to convert that solid line into dashed lines.. can someone pls help me with codes or instruction for converting the solid line into dashed line

Answer 1

[David Sanchez]

h = plot(rand(10,1)); % this creates a handle to the figure

set(h,'LineStyle','--') % this convert the solid line into dash

[RAMESH MUNIRATHINAM]

thank you for the help

rgb = imoverlay(Ihj, 12, [1 1 1]);

the above cmd gives me the solid line marking on the image.. i have to change the solid line into dashed line and dotted line in white and black colors respectively