Hi,

If your bounding box follows a right-hand rule or left-hand rule you
could Buffer it with one side only.  If not, Buffer with sides only, run
through a PolygonBuilder/DonutBuilder, and then take the feature that is
a hole as your new bounding box.  I've attached an example of this.

If you don't like the rounding that the Bufferer does on internal
angles, another option would be

- use a BoundsExtractor 
- calculate a width and a height using ExpressionEvaluators
- run your Scaler
- do another BoundsExtractor
- calculate the new width and height
- calulate the difference between the two heights / 2 and the difference
between the two widths
- use these differences as parameters to an Offsetter

Jason

-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of
waberskidarrow
Sent: Friday, February 10, 2006 14:26
To: [email protected]
Subject: [fme] Clipping contours

I am generating contours using the surface modeler but along the
boundaries the contouring is giving me zingers, mostly straight lines
right along the boundary.

To clean it up I created a bounding box then scaled it slightly ( I
assumed it would scale about the middle of the box) but I did not get
the results I wanted. I would like to offset the box say 5 meters inward
then use it to clip the contours.

Any suggestions?

What about if I want to clip them in 3d? (Take the box drape it onto the
contours then use it to clip the contours?)

Thank you for any help







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Attachment: boundsshrinker.fmw
Description: boundsshrinker.fmw

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