Smooth Vector¶

This notebook demonstrates how to smooth vector data using the smoothify library.

Install packages¶

To use the new functionality, ensure the required packages are installed.

In [ ]:

# %pip install geoai-py smoothify

# %pip install geoai-py smoothify

Import libraries¶

In [ ]:

import geoai
import leafmap

import geoai import leafmap

Download sample data¶

In [ ]:

image_url = "https://huggingface.co/datasets/giswqs/geospatial/resolve/main/wetland_prediction.tif"
image_path = geoai.download_file(image_url)

image_url = "https://huggingface.co/datasets/giswqs/geospatial/resolve/main/wetland_prediction.tif" image_path = geoai.download_file(image_url)

Visualize sample data¶

In [ ]:

m = leafmap.Map()
m.add_basemap("Esri.WorldImagery")
m.add_raster(image_path, nodata=0, opacity=0.5, layer_name="Raster")
m

m = leafmap.Map() m.add_basemap("Esri.WorldImagery") m.add_raster(image_path, nodata=0, opacity=0.5, layer_name="Raster") m

Convert raster to vector¶

In [ ]:

output_path = "wetland_prediction.geojson"

gdf = geoai.raster_to_vector(
    image_path, output_path, min_area=1000, simplify_tolerance=None
)

output_path = "wetland_prediction.geojson" gdf = geoai.raster_to_vector( image_path, output_path, min_area=1000, simplify_tolerance=None )

In [ ]:

style = {"color": "red", "fillOpacity": 0, "weight": 2}
m.add_vector(output_path, style=style, layer_name="Vector", info_mode=None)

style = {"color": "red", "fillOpacity": 0, "weight": 2} m.add_vector(output_path, style=style, layer_name="Vector", info_mode=None)

Smooth a vector data using smoothify¶

In [ ]:

smoothed_gdf = geoai.smooth_vector(
    gdf, smooth_iterations=3, output_path="wetland_prediction_smoothed.geojson"
)

smoothed_gdf = geoai.smooth_vector( gdf, smooth_iterations=3, output_path="wetland_prediction_smoothed.geojson" )

In [ ]:

smoothed_style = {"color": "yellow", "fillOpacity": 0, "weight": 1}
m.add_gdf(
    smoothed_gdf, style=smoothed_style, layer_name="Smoothed Vector", info_mode=None
)
m

smoothed_style = {"color": "yellow", "fillOpacity": 0, "weight": 1} m.add_gdf( smoothed_gdf, style=smoothed_style, layer_name="Smoothed Vector", info_mode=None ) m