This document describes the HydrOffice BRESS (2.3). For the project page, go here.

2.1. Inputs/Outputs

This tab is mainly used to define the input bathymetry and acoustic backscatter, by selecting files in ASCII grid (.asc) or native formats (.bathy and .mosaic), as well as set the location for outputs.

To access these functionalities, you need to select the BRESS tab on top of the application, then the Inputs/Outputs sub-tab at the lower-left corner.

Note

The native formats (.bathy and .mosaic) are internal binary formats that have been introduced to speed up the reading in memory for gridded data of large size. The app provides a conversion tool in these native formats.

2.1.1. Data Inputs

In Data inputs:

  • Drag-and-drop a bathymetric DTM (.asc or .bathy) in the Bathy DTM field. The "+" browse button may also be used.

  • Optionally, drag-and-drop a flatness grid (.asc or .flatness) in the Flatness Grid field. The "+" browse button may also be used.

  • Drag-and-drop a reflectivity grid (.asc or .mosaic) in the Reflectivity field. The "+" browse button may also be used.

  • The directory and filename of loaded data will populate in the respective field of Data inputs.

  • With the addition of a bathymetric DTM grid, the Landforms tab on the bottom of the interface will become available (Fig. 2.1).

  • When both a bathymetric DTM and a reflectivity grid are loaded, the Segments tab on the bottom of the interface will become available (Fig. 2.1).

input

Fig. 2.1 Data Inputs tab.

  • The Clear data button may be used to remove all data inputs.

  • The Info button provides a link to the present manual.

  • Additional functionalities are available by right-clicking on the loaded DTM (Fig. 2.2) and mosaic (Fig. 2.3):

    • Read as depths/Read as elevations (only for DTM’s ASCII grid). To be used in case that the values represent depths (positive down), not elevations (positive up, that is the default).

    • Plot the DTM (Fig. 2.4) or the mosaic (Fig. 2.5).

    • Edit. To open the DTM in the Gridy tool for editing.

    • Show mask path (only if a DTM’s mask is loaded).

    • Set mask/Unset mask (only for DTM’s ASCII grid). To pair/unpair the DTM with a landform mask.

    • Save the DTM or the mosaic in the native binary formats (.bathy and .mosaic, respectively).

    • Remove the selected input.

input

Fig. 2.2 Context menu accessible by right-clicking on a loaded DTM input.

input

Fig. 2.3 Context menu accessible by right-clicking on a loaded mosaic input.

input

Fig. 2.4 Plot showing the loaded DTM.

input

Fig. 2.5 Plot showing the loaded mosaic.

2.1.2. Data Outputs

In Data outputs:

  • The output Formats currently available are ASCII grid (.asc) and floating-point GeoTiff (.tiff).

  • The default output Folder location is listed; however, this may be modified via drag-and-drop (or browse to) a user-specified output folder. To return to the default output folder location, click Use default.

  • The ensuing functions will open the output folder automatically upon execution; however, if needed, the specified output folder may be accessed by clicking the Open folder button.

  • The Info button provides a link to the present manual.