Hi to all,
While googled i got Nomography and PyNomo .
It will help me out to understand about nomography to draw the contour lines which i specified in my project goal map.
Links:
http://myreckonings.com/wordpress/2008/01/09/the-art-of-nomography-i-geometric-design/#more-23
http://myreckonings.com/wordpress/2008/01/09/the-art-of-nomography-ii-designing-with-determinants/
http://myreckonings.com/wordpress/2008/01/09/the-art-of-nomography-iii-transformations/