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Bill Syme

NaNs caused by Wide Z Shape Lines with Coincident Vertices

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Please note that if Wide Z Shape Lines (including lines in FC Shape and other Shape layers) have coincident vertices at the start or end of the line, the buffer polygon created by TUFLOW will appear distorted at the end and may assign NaN (not a number) values to the affected Zpt elevations. This in turn will cause NaNs to appear in the simulation output.

Please see the attached document for a description of the problem and a workaround. For the 2012 release, it is planned to automatically remove any coincident vertices along Z Shape lines so that this problem does not occur.

Best Regards

Bill Syme

TS12091_Memo.pdf

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