Created
April 17, 2024 20:45
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Calculate which city points are within each tif in a directory
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# this script goes through a directory of tif files and a shapefile of cities | |
# and reports which city points are contained within each tif | |
import os | |
import fiona | |
import rasterio | |
import shapely | |
from pyproj import Transformer | |
tifpath = "path/to/tiffs" | |
d = os.listdir(tifpath) | |
for filename in d: | |
if not filename.endswith(".tif"): | |
continue | |
image = rasterio.open(os.path.join(tifpath, filename)) | |
rasterextent = shapely.geometry.box(*image.bounds) | |
# the city points are in coordinate system EPSG:4269 (latitude, longitude) | |
# so we'll need to transform into the CRS of the raster | |
t = Transformer.from_crs(4269, image.crs, always_xy=True) | |
with fiona.open("cities.shp") as cities: | |
for feature in cities: | |
# transform the city coordinates to match the CRS of the current raster | |
x, y = feature.geometry.coordinates | |
newx, newy = t.transform(x, y) | |
newpoint = shapely.geometry.Point(newx, newy) | |
if shapely.contains(rasterextent, newpoint): | |
# current city matches the raster | |
print(filename, feature.properties["NAME10"]) |
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