Hi,
the problem is simple, somewhere in your table you have a linear object
mixed up with your polygons or vice versa (mapinfo allows you store lines,
points and polygons in the same table whereas as av wont). mapinfo cannot
combine lines into polygons, you need to separate to two types of object
and then combine them seperately (ie combine the lines together in one
session and then combine the polygons in another)
quickest way to do this is to use a query to select the objects where their
area is <> 0 (polygons always have an area greater than zero, lines have
no area at all) you'll find the 'area' syntax lurking under the 'function'
menu in the query dialogs
if you need to separate points from lines (because points have no area
either) then do a separate select by objectlength (points have no length,
lines do) the objectlen clause is under the functions option too..
Fear not...you will get what you want, I started in AV and went to MI very
quickly (av2 was pants), nowadays for corporate reasons I have to use av3 a
lot and I get really frustrated that AV doesnt have all those little extra
'MI' functions built in to its "sql"..........I seem to spend most of my
time swapping data between MI and AV so I can use the best bits of both.)
hth
r
brit. geol. surv.
uk
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