[Question] How can I input manually mapped shorelines into high-resolution orthomosaics?

[LITIDisma]

An orthomosaic was generated based on aerial photographs. Using QGIS, I mapped the wet-dry sand interface and would like to use that shapefile as a reference line.

Regards

[neon-ninja]

Hi, I had to do this too. It should be as simple as something like:

settings["reference_shoreline"] = np.array(gpd.read_file("your_shoreline.shp").geometry.iloc[0].coords)

[kvos]

yes, and make sure that the shapefile is in the same coordinate system as your settings['output_epsg'] and your transects

[LITIDisma]

@neon-ninja

And to load a shapefile of transects with slope values? it's similar? I also drew transects over a digital elevation model, so I have the specific slope for each of them along the coast, but I’m not sure if the code will use it.

[neon-ninja]

Slopes are only used during tidal correction

[neon-ninja]

Here's how I load transects

transects_at_site = transects_gdf[transects_gdf.site_id == sitename]
transects = {}
for transect_id in transects_at_site.index:
        transects[transect_id] = np.array(transects_at_site.geometry[transect_id].coords)