Erik,
polygons have an 'area', lines do not, so try something like
select * from mytab where area(obj, "sq m") <> 0
will select all polygons from table mytab
to find lines from points (points also have an area of 0m2)
select * from mytab where objectlen(obj, "m") <> 0
the 'area' and 'objectlen' functions are found on the sql-query dialog only
regards
russ lawley
brit geol surv
uk
-----Original Message-----
From: Erik van Hunnik [mailto:[EMAIL PROTECTED]]
Sent: 08 May 2001 21:47
To: [EMAIL PROTECTED]
Subject: MI-L how to select polygons in a layer
Dear list,
I want to filter out all polygons in a layer that has both polylines and
polygons in it.
I tried the ObjectInfo(obj, 1) function, and could get the information on
what the object is. With the result I didn't succeed in making a next query
that should filter out those objects.
Thanks for your input.
Erik van Hunnik
First Element
[EMAIL PROTECTED]
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