Here's the response I got several months ago to the same question. It worked
for me. Thanks go to Steve Wallace and others who offerred the same
solution.
Bob Foss
>I am preparing a MapInfo table showing Zoning Districts from an AutoCad
>file. Because the Autocad file used a mixture of polylines and closed
>polygons, I am having to create regions from them. This is not a problem
>but what I have found happening is that when a larger region encompasses
>smaller districts and I use any sort of background fill for the regions,
>the smaller regions are hidden behind the larger one. Is there any way to
>cut the smaller regions from the larger one. (I wish I could show you a
>picture of what I mean if this is not clear).
>
Have the layer editable, select the larger object, set this as a target (^T
or Objects > Set Target). Then select the smaller object (you may have to
hold down CTRL to get it selected) then choose Object > Erase. Save the
changed table.
Steve Wallace
GIS & Market Information Manager
Florida Farm Bureau Insurance Companies
-----Original Message-----
From: Ian Perkins <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Tuesday, May 02, 2000 12:00 AM
Subject: MI Cutting "holes" in regions... how to?
>G'Day Folks,
>
>My problem:
>
>I am mapping vegetation communities (as regions/polygons) and some regions
>need to contain other regions (like a hole (one region) in a donut (the
>other region))...
>
>Is there a way I can create a region/polygon which has a "hole" cut out of
>it and is combined with the outer region so that calculations of area
>exclude the "hole"?
>
>Many many thanks in advance,
>
>Ian
>--
>Ian Perkins
>Principal Consultant - IPCS
>
>Postal Address:
>PO Box 134,
>Annandale. NSW. 2038.
>
>New Office Address:
>372 Norton Street, Leichhardt. 2040.
>
>New Tel: (02) 95728288
>New Fax: (02) 9564-2474
>Mob: 0418 675 502
>
>Email: [EMAIL PROTECTED]
>http://www.zip.com.au/~ipcs
>
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