This document describes HydrOffice QC Tools 4.9.9.

2.3.3.1. How To Use?

Scan grids for anomalous grid data “fliers”.

• Select the Flier Finder tab (Fig. 2.6) on the bottom of the QC Tools interface.

• For Flier Finder v10, first consider Settings:

  • The Flier height will be determined automatically by the program and does not need to be set, but the user may choose to do so in order to run a specific Flier height (see Flier Height).

  • The selected Checks are enabled by default. You can enable or disable them in order to run custom analysis (see How Does It Work?).

• To change the Settings for Flier Finder v10:

  • Click the Unlock button, and click OK to the dialogue.

  • If desired, enter a desired Flier search height in meters in the Force flier heights box.

    • A single height may be entered to apply to all loaded grids, or multiple heights may be entered (separated by comma) to apply to each grid loaded.

    • These values, if entered, will override any Estimated heights determined by the program.

  • Enable or disable the specific Checks to run.

  • If desired, modify the filtering horizontal and vertical distances from the closest point feature.

  • Enable or disable the specific Filters to run.

Fig. 2.6 The Flier Finder tab.

• In Execution for Flier Finder v10:

  • Click Flier Finder. After executing, the output window opens automatically (Fig. 2.7), and the results are shown:

Fig. 2.7 The output message at the end of Flier Finder execution.

• An output window will open in File Explorer. From the output window, drag-and-drop the desired output file into the processing software to guide the review. Each candidate flier is labeled using the identifier of the algorithm that detected it (e.g., “2” for Gaussian Curvature).