Tool to sample profiles from raster DEMs along river centerlines
An appropriate environment (here named profile) can be created with:
conda env create -n profile -f environment.yml
The following assumes that this environment is activated.
The tool supports editable installation using pip. To install it this way,
use the following command in the root directory:
pip install -e .
You may want to test your installation by calling pytest in the root
directory.
sample_profiles [-h] [--interval INTERVAL] [--length LENGTH] [--sample-count SAMPLE_COUNT] [--progress] input_centerlines input_dem output_profiles
| Parameter | Description |
|---|---|
input_centerlines |
Input centerline datasource (OGR-readable path or connection string) |
input_dem |
Input DEM raster dataset to sample Z from (GDAL-readable path or connection string) |
output_profiles |
Desired path to output file. Will be written as GeoPackage (GPKG) |
--interval INTERVAL |
Preferred interval (along centerlines) between profiles, in georeferenced units |
--length LENGTH |
Length of profiles in georeferenced units |
--sample-count SAMPLE_COUNT |
Number of samples to take along each profile |
--progress |
Show progress bar while processing |
-h |
Print help and exit |
This will create profiles across the linestrings in rivers.gpkg, sampling from the raster DEM in dem.vrt, writing the output profiles to profiles.gpkg:
sample_profiles rivers.gpkg dem.vrt profiles.gpkg