This document describes HydrOffice QC Tools 4.9.9.

2.3.3.4. What do you get?

Upon completion of the execution of Flier Finder you will receive a pop-up verification if your surface contains potential fliers or not (Fig. 2.15).

fliers tab

Fig. 2.15 The Flier Finder output message.

Flier Finder produces two .000 files containing the locations of potential fliers. These can be loaded into your GIS software of choice for further analysis.

One type of .000 file is called the “blue notes” which is a file containing $CSYMB features (Fig. 2.16). The NINFOM field of the $CSYMB features contains the algorithm detected (e.g., “2” for Gaussian Curvature).

flier indicated with blue note

Fig. 2.16 An example of a potential flier identified with a blue note ($CSYMB).

The other type of .000 file is a sounding file that contains SOUNDG features (Fig. 2.17). The depth of each SOUNDG feature identifies the algorithm that detected it (e.g., “3” for Adjacent Cells).

flier indicated with sounding

Fig. 2.17 An example of a potential flier identified with a sounding (SOUNDG).

The naming convention of the output files contains important information about the settings that were used to execute Flier Finder. Each setting is separated by a period in the naming convention. See Fig. 2.18.

naming convention of output file for flier finder

Fig. 2.18 Example naming convention for a Flier Finder output. In this example the user selected a 0.5 meter manual flier height, ran checks #2, #3, #4, and #5, #7 with General 1 Uncertainty and selected filter #1.