The package opalsHydro contains various modules for analysing and processing points on and below the water surface. The package also contains the qpals Water Surface Modeler which is an interactive tool in QGIS for modelling the water surface.

Scripts and Modules of Package opalsHydro
Python Scripts	Description
hydThalweg.py	Computes the thalweg of a river using datasets derived from Airborne Laser Bathymetry (ALB) and the river axis.
Modules	Description
AddInfo	Inserts or updates ODM attributes by combining existing attributes and/or grid models.
Colorize
Export	Exports vector data stored in an OPALS data manager (ODM) in various data formats.
Histo	Derives histograms and descriptive statistics (min, max, mean, r.m.s, etc.) for ODM or grid/raster data sets and stores the results graphically (SVG) and numerically (XML).
Import	Loads vector and raster data into an ODM for subsequent use in modules dealing with point cloud and line related data.
Info	Extracts and reports information of an ODM, vector or raster file.
Rasterize	Performs vector-to-raster conversion for all types of simple feature geometries (points, lines, polygons).
Section	Extracts sections of user defined width/length along a specified reference axis from a point cloud (ODM).
Simplify	Analyses a regular or hybrid grid model and generates an approximating TIN surface based on a coarse-to-fine approach.
Snellius	Performs range and refraction corrections of raw laser bathymetry measurements according to Snell's law.
Translate	Performs format conversion for vector data files with additional read support of GDAL rasters.
Vectorize	Performs raster-to-vector conversion and exports polyline geometries.
View	Provides an interactive 3d viewer for points (including arbitrary attributes) and lines.
ZColor	Derives color coded visualizations of grid models and stores them as geo-coded raster images.