[LandXML] Re: Direction units
- From: "Nathan Crews" <nathan.crews@xxxxxxxxxxx>
- To: <janne.porkka@xxxxxx>, <landxml@xxxxxxxxxxxxx>
- Date: Tue, 13 Sep 2005 09:13:33 -0600
Hopefully this modified documentation clears up any confusion between angles
and directions in LandXML:
Angle - a simple angular value, such as the delta angle for a circular
curve. Also the angle measured between two directions.
Direction - a horizontal angle that indicates a direction, such as a bearing
or azimuth.
<xs:element name="Units">
<xs:annotation>
<xs:documentation>All angular and direction values default to radians
unless otherwise noted. Angular values, expressed in the specified
<Units>.angleUnit are measured counter-clockwise from east=0. Horizontal
directions, expressed in the specified <Units>.directionUnit are measured
counter-clockwise from 0 degrees = north</xs:documentation> ...
<xs:simpleType name="angle">
<xs:annotation>
<xs:documentation>Represents a normalized angular value in the
specified Angular units. Assume 0 degrees = east</xs:documentation>
</xs:annotation>
<xs:simpleType name="direction">
<xs:annotation>
<xs:documentation>Represents a normalized angular value that
indicates a horizontal direction, expressed in the specified Direction
units. Assume 0 degrees = north</xs:documentation>
</xs:annotation>
Regards,
Nathan Crews
w <http://www.landxml.org> ww.landxml.org
_____
From: landxml-bounce@xxxxxxxxxxxxx [mailto:landxml-bounce@xxxxxxxxxxxxx] On
Behalf Of Janne Porkka
Sent: Tuesday, September 13, 2005 6:32 AM
To: landxml@xxxxxxxxxxxxx
Subject: [LandXML] Direction units
Dear all,
We have remarked overlapping descriptions on angular & direction definitions
in LandXML1.0 and 1.1. Please upgrade these verbal descriptions.
east=0
<xs:element name="Units">
<xs:annotation>
<xs:documentation>All angular and direction values default to radians
unless otherwise noted. Direction values are measured counter-clockwise from
east=0.</xs:documentation> ...
north=0
<xs:simpleType name="direction">
<xs:annotation>
<xs:documentation>Represents a normalized angular value that indicates
a horizontal direction, expressed in the specified Direction units. Assume 0
degrees = north</xs:documentation> ......
Best Regards,
-----------------------------------------------------------
Janne Porkka
Research Scientist
VTT BUILDING AND TRANSPORT
Business and Process Management
Lämpömiehenkuja 2
P.O.Box 1800
FIN-02044 VTT, Finland
Email: Janne.Porkka@xxxxxx
Phone: +358 20 722 6203
Mobile: +358 40 578 6055
Fax: +358 20 722 6251
Other related posts:
