1. What does this sentence mean?
"I am adjusting a cad drawing to preparation for GIS translation, but i have yet been able to identify the polygon in cad for gis with an attribute table."
It seems like there are several words missing.
2. The handle of an object does not change from one autocad session to the next, however the entity name of the object will change. Both the handle & the entity name are assigned by autocad.
3. You cannot identify (and therefore manipulate) a polyline with an attribute table. However, you can select it (or other graphical objects) several different ways, including by the handle name. Another way to select a polyline or line or circle, etc., is by specifying the object type and a 3D coordinate associated with it. Example:
Code:
(setq ss
(ssget "X"
(list '(0 . "line")
(cons 10 '(-1 -1 0))
)
)
)
This grabs all the objects (usually just one) that are lines and that have a start point of -1,-1,0.
HTH,
Dave