Let say we have a georaster file with a given resolution. Is is possible to create a grid where each cell of the grid correspond to each pixel? Is it possible to store this grid as a GeoPandas dataframe?

This is a example of the image that I have.

fname = 'myFile.tif'
f = rasterio.open(fname)

enter image description here

This is what I tried to do but I am not able to convert the meshgrid as a geopandas dataframe.

from affine import Affine
import xarray as xr
da = xr.open_rasterio(fname)
transform = Affine.from_gdal(*da.attrs['transform'])
nx, ny = da.sizes['x'], da.sizes['y']
x, y = np.meshgrid(np.arange(nx)+0.5, np.arange(ny)+0.5) * transform

The goal is to have a GeoPandas dataframe in which each rows correspond to a pixel with the value of the georaster because I want to make spatial join with other GeoPandas dataframes.


1 Answer 1


I solved the problem as following:

def geopandasFromRaster(geofile):
    mask = None
    with rasterio.Env():
        with rasterio.open(geofile) as src:
            image = src.read(1) # first band
            results = (
            {'properties': {'raster_val': v}, 'geometry': s}
            for i, (s, v) 
            in enumerate(
                shapes(image, mask=mask, transform=src.transform)))
    geoms = list(results)
    return gpd.GeoDataFrame.from_features(geoms)

gdf = geopandasFromRaster(fname)

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