map and building information

[Keyuan Xu <kashew@MIT.EDU>]

I have update my basemap parser.  

The new map is at 	/home/kashew/Keyuan/Contours/map.iv
The building names 	/home/kashew/Keyuan/Contours/bldg_num
The building contours	/home/kashew/Keyuan/Contours/bldg_con

I was able to flip all the upside down buildings around in the map.  There
are still 2 more things to be done.

1) There are some extraneous markings on the map that probably resulted
from drawing errors in the dxf basemap.  Does anyone have any ideas on how
to filter these out?

2) The contour of each building should be mathematically manipulated (and
possibly combined with other info) to give us the absolute location and
absolute orientation of each building.  Does anyone have any ideas for this
algorithm?

Thank you

Keyuan