During making a grid for water bodies, viewing the bathymetry underneath the gird is meaningful as it gives an idea about the high resolution of cells in the deep and main channel regions and the low resolution of cells in shallow regions. The Data menu supports do this. It includes Grid Bathymetry Interpolation and Download Online Bathymetry as shown in Figure 1. The function of each option is described in the table below.
Figure 1 Data menu options.
Grid Bathymetry Interpolation
Suppose that we have a cross-section file (filename XS.ldb), the file contains cross-sections. Each cross-section has the following information (Figure 2).
- The first row is the name of the cross-section
- The second row has a number of data points (e.g 111), and a number of columns (e.g 3) of each data point. It includes coordinates (X, Y) and Z (elevation)
- Data points start from the third row to end
Figure 2 Cross-section data format.
From the Import button in the main toolbar, select Import Cross-Sections option, as shown in Figure 3.
Figure 3
Figure 4
Figure 5