how to overlay the image with contour plot in the matlab

Hi I am trying to super impose a contour plot over an image, but contour plot is replacing by the image

I=imread('1.jpg'); imshow(I) hold on contourf(posxI(1,:),posyI(:,1),SPL) title(' Pressure distribution on reconstructed plane Zr=0.63m') colormap('default'); colorbar('location','eastoutside');

but i need this type

Answer 1

[Image Analyst]

See these links:

http://blogs.mathworks.com/steve/2009/02/18/image-overlay-using-transparency/

http://www.mathworks.com/matlabcentral/answers/104889-how-to-overlay-a-foreground-image-over-a-background-image