[LandXML] April 23, 2008 LandXML-1.2 Updates

  • From: Nathan Crews <nathan.crews@xxxxxxxxxxxx>
  • To: "landxml@xxxxxxxxxxxxx" <landxml@xxxxxxxxxxxxx>
  • Date: Wed, 23 Apr 2008 09:53:00 -0700

We have posted what should be the final draft of the LandXML-1.2 schema with 
updated changes document and matching LandXML-1.2 SDK at


http://www.landxml.org/schema/LandXML-1.2/Cumulative LandXML-1.2 


Schema Changes since last posted working draft:
1.    Added TIN face breakline attribute "b" to <F> element

<xs:attribute name="b" type="xs:positiveInteger" use="optional"/>

"b" attribute used to indicate the edges of the face that coincides with 
breakline data.

b=an integer bitmask sum of the sides of the face that had breaklines in the 
original data.
This gives a valid integer range of 0 to 7 for each TIN face:

1 = side 1
2 = side 2
4 = side 3

For example b="5" has breakline data on TIN face sides 1 and 3. A practical 
example use of this is for automatic assignment of appearances to faces, 
recursively adding faces that do not cross a breakline.


Nathan Crews

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  • » [LandXML] April 23, 2008 LandXML-1.2 Updates