CAD tip # 7648:

Question

CAD

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Area not displayed for some boundaries or hatches.

The Properties window, the AREA command and some LISP utilities based on the AREA command and the variable PERIMETER do not show the value of area nor length for some boundary curves in AutoCAD 2010, 2011 and higher.

AutoCAD 2010 (in fact the version 2009 with Bonus Pack) has changed the algorithm for calculating areas and perimeters. You can no longer use these on self-intersecting and self-touching curves. Make sure your boundary curve is a closed polyline which touches only at its start point and end point.

Modify your AutoLISP routines to use (vlax-get object 'Length) instead of the combination AREA/PERIMETER.

ACAD2010ACAD2011

*CAD

16.11.2010 37007×

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this tip shared by ARKANCE experts applies to: AutoCAD 2010 · AutoCAD 2011 ·

See also:
Tip 14675:	How to find out the size of the asphalted area and changes over time in Pointscene?
Tip 14443:	Connector, notch, groove, cutout or other curve- breaks - easily with dynamic blocks.
Tip 14250:	How to select all lines of the same length or boundary polylines of the same area?
Tip 13150:	How to hatch selected objects including overlays and islands?
Tip 12287:	AutoCAD hatch flood-fill does not honor all boundaries.

Selected tip: Import and export IGES files in AutoCAD (DWG).

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