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Question

Identify identical polygon

  • November 28, 2013
  • 4 replies
  • 14 views

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Dear All , 

 

 

I am looking for a way to identify almost identical polygon from two different feature classes . Is there is a way to find similarity by tolerance. Thanks in advance

 

4 replies

fmelizard
Safer
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  • Safer
  • November 28, 2013
Possibly the Matcher ?

Hi,

 

 

the SpatialRelator offers some tests -> EQUALS.

 

 

Maybe that helps you,

 

best regards,

 

Stefan

gio
Contributor
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  • Contributor
  • November 29, 2013
If they are "almost" identical then matcher and spatial equality are not realy usefull. You can thin the features by those who are not matches...for sure.

 

 

How i would go about this is extract nodes and/or boundary and also calculate surafce.

 

Compare these sets, you then can indeed set tolerances.

 

Tolerances can be surfacetolerance, angular difference of boundarysections or coordinate deviation of nodes.

 

U could use statisctics calculation and principles of normal distribution to do this comparison.

 

 


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  • Author
  • November 29, 2013
Thanks all, I think Gio is right since features are not identical, I have to try his way.

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