point-in-polygon

Most efficient way to randomly select point within polygon?

Most efficient way to randomly select point within polygon? Question: I’m extremely new to Python and trying to figure out the most efficient way to randomly select a point within a polygon. The image I attached is representative of the scenario – my first attempt took nearly 30 seconds to generate a list of all …

Total answers: 1

geopandas point in polygon

geopandas point in polygon Question: I have a GeoDataFrame of polygons (~30) and a GeoDataFrame of Points (~10k) I’m looking to create 30 new columns (with appropriate polygon names) in my GeoDataFrame of Points with a simple boolean True/False if the point is present in the polygon. As an example, the GeoDataFrame of Polygons is …

Total answers: 1

Check if geo-point is inside or outside of polygon

Check if geo-point is inside or outside of polygon Question: I am using python and I have defined the latitudes and longitudes (in degrees) of a polygon on the map. My goal is to check if a generic point P of coordinates x,y falls within such polygon. I would like therefore to have a function …

Total answers: 4

SciPy Create 2D Polygon Mask

SciPy Create 2D Polygon Mask Question: I need to create a numpy 2D array which represents a binary mask of a polygon, using standard Python packages. input: polygon vertices, image dimensions output: binary mask of polygon (numpy 2D array) (Larger context: I want to get the distance transform of this polygon using scipy.ndimage.morphology.distance_transform_edt.) Can anyone …

Total answers: 6