Breaklines should Undergo QA/QC

As with any data, breaklines should undergo a QA/QC process. For breaklines this should entail a check for potential topology errors as well as incorrect elevation values. Since breaklines are used to define and control surface behavior in terms of smoothness and continuity they may have a significant effect when incorporated in a surface model.

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Analyze Relative accuracy between flight lines with the Seamline Analysis tool

The recently published United States Geological Survey National Geospatial Program’s LIDAR Base Specification Version 1.01 specifies that the “requirements for relative accuracy within overlap between adjacent swaths of data should be less than or equal to 10 cm RMSEz”. In version 2011.1, LP360 introduced a new tool which allows for the ability to check the…

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